💻 IT 开发工具

🚫 .gitignore 生成器.gitignore Generator .gitignore 生成器.gitignore Generator - Pick stacks (Python/Node/Go/Rust/Java/.NET/IDE) and merge a ready .gitignore file. Free, browser-only. 🔧 .properties 解析器.properties Parser Java .properties 文件解析：支持 key=value、key:value、行内注释、行尾反斜杠续行。.properties Parser - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of ... 🔐 A1Z26 密码A1Z26 Password 按 A=1、B=2、…、Z=26 的规则，将英文字母消息编码为数字序列，或将数字串解码回字母，适合密码学入门练习与趣味密信的写作和破译。A1Z26 Password - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 ADFGVX 密码ADFGVX Password 复现一战德军使用的 ADFGVX 密码：先以 6×6 方阵（A–Z + 0–9）将明文替换为双字母，再按密钥做列置换打乱，支持加密与解密，用于古典密码教学演示。ADFGVX Password - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 AES 加密 / 解密AES Encrypt Decrypt 支持 AES-128/192/256，ECB/CBC/CFB/OFB/CTR 模式，PKCS7 填充。AES Encrypt Decrypt - encode and decode online, free and secure. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the ... 🔐 API 签名生成器API Signature Generator API 签名生成器API Signature Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of ... 🎲 ASCII 大字生成器ASCII Art 输入文字，自动转换为由 ASCII 字符拼成的「大字」横幅（figlet 风格），可切换字体并复制结果，用于终端欢迎语、代码注释或社交平台装饰排版。ASCII Art - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 ASCII 字符表ASCII Table 列出标准 ASCII 码（0–127）的十进制、十六进制与字符对照，点击即可复制对应编码，供程序员查阅控制字符、可打印字符与编码边界。ASCII Table - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🌳 ASCII 目录树生成器ASCII Directory Tree Generator 把路径列表一键生成 ASCII 目录树（├── └── │ 风格），支持文件/文件夹标记，复制进 README 或文档。ASCII Directory Tree Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. P... 🌳 AST 抽象语法树查看器AST AST View Device - AST ( Abstract Syntax Tree 在线 AST 查看器，用 acorn 解析 JavaScript 源码为抽象语法树并可视化展开节点，帮助理解代码结构，支持折叠与定位，纯前端。AST AST View Device - AST ( Abstract Syntax Tree - view and preview online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no inst... 🔁 高级单位转换器Advanced Unit Converter 高级单位转换器Convert across length, mass, temperature, area, volume, time, speed and data storage with all common units shown at once. Runs locally. 🪙 BIP39 助记词生成器BIP39 Mnemonic Generator 生成符合 BIP39 标准的加密货币助记词（12/15/18/21/24 词）：基于浏览器加密级随机数，支持批量生成，可复制为逗号/空格分隔。BIP39 Mnemonic Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of... 🔐 Base32 编码 / 解码Base32 Encode/Decode 按 RFC 4648 字符集（A–Z 与 2–7）进行 Base32 编码与解码，支持不区分大小写解码，纯前端本地处理、数据不上传。Base32 Encode/Decode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 Base58 编码 / 解码Base58 Encode/Decode 输入文本或字节，使用去除 0/O/I/l 等易混字符的 Base58 字母表进行编码或解码，常用于比特币地址与短链场景，避免复制时产生歧义字符。Base58 Encode/Decode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🗂️ Base64 文件转换Base64 File Convert 文件与 Base64 互转：图片/文档/压缩包转 Base64 字符串（含 data URI 前缀选项），或粘贴 Base64 还原为文件下载。纯本地处理，文件不上传。Base64 File Convert - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 Base64 编解码工具Base64 Encode/Decode 支持 Base64 / Base32 / Base85 编码解码，文本、文件、批量三种模式，纯前端本地处理。Base64 Encode/Decode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 Base85 编码 / 解码Base85 Encode/Decode 支持 Ascii85（Adobe 变体，含 <~ ~> 包裹）与 Z85（ZeroMQ）双模式。Base85 Encode/Decode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔑 Basic Auth 生成器Basic Auth Generator 一键生成 HTTP Basic 认证所需的 Authorization 头与 URL 形式：用户名+密码 → Base64 令牌，支持中文用户名，供接口调试与开发使用。Basic Auth Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the... 🔐 Baudot / ITA2 编码Baudot / ITA2 Encode 输入文本，按 5 位 Baudot/ITA2 电传码编码为比特流（含字母/数字模式切换字符），或反向解码，适合了解早期电传打字机通信与复古编码实验。Baudot / ITA2 Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔒 Bcrypt 哈希/校验Bcrypt Hash / Check - Bcrypt Bcrypt 在线哈希与校验工具，前端本地对密码执行 Bcrypt 加盐哈希（可设成本因子），或校验明文与哈希是否匹配，数据不上传，纯前端。Bcrypt Hash / Check - Bcrypt - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development t... ⚡ Benchmark 基准测试Benchmark Benchmark 在线测量浏览器 JavaScript 运算性能：整数/浮点/字符串/数组/对象五种负载，每秒操作数（ops/sec）对比，一键复制测试代码。Benchmark Benchmark - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔷 蓝牙版本速查Bluetooth Version Reference 蓝牙版本速查Compare Bluetooth 4.2-5.4 speeds, range, and features, with buying advice by use case. Free online tool on ToolBox — 100% client-side, no data uploaded, no... 🎛️ Box-shadow 生成器Box-shadow Generator 可视化 CSS box-shadow 生成器：偏移/模糊/扩散/颜色/内阴影实时调节，实时预览并复制 CSS 代码。Box-shadow Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the... 📚 C# 速查C # Quick Reference C# 速查：类型、集合、LINQ、类、属性、record、async/await、模式匹配、dotnet。C # Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 C++ 速查C ++ Quick Reference C++ 速查：类型、STL、智能指针、类、模板、Lambda、现代特性、异常、CMake。C ++ Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 C/C++ 字符串转义C / C ++ String Escape 支持 \n \t \r \\ \' \" \0 \a \b \f \v \xXX \nnn。C / C ++ String Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🛡️ CAA 记录生成器CAA Record Generator - Generate DNS CAA 生成 DNS CAA 记录：指定域名与允许的证书颁发机构，输出标准 CAA 资源记录，防止证书误签发。CAA Record Generator - Generate DNS CAA - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no i... 🔐 CRC 计算器CRC Calculator 支持 CRC8 / CRC16 / CRC32 / CRC64 多种变体。CRC Calculator - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developm... 🎯 CSS 压缩器CSS Minifier CSS 压缩器CSS Minifier - Strip comments and redundant whitespace to shrink CSS for faster loads, preserving semantics. Free, browser-only. 📐 CSS clamp 计算器CSS clamp Calculator 响应式字号 clamp() 计算器：输入最小/首选/最大字号与视口范围，生成流畅缩放表达式并实时预览。CSS clamp Calculator - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🎨 CSS 压缩/格式化/美化CSS Compress / Beautify 在线 CSS 压缩与美化工具，去除注释空白压缩体积或重新格式化缩进，保留语义便于维护，适合前端构建与调试，纯前端运行。CSS Compress / Beautify - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 CSS 字符串转义CSS String Escape 按 CSS.escape 规范，对标识符与字符串两种模式进行 CSS 转义处理，纯前端本地运算，方便生成安全的 CSS 选择器。CSS String Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 CSS 属性速查CSS Properties 按分类列出完整 CSS 属性速查表，点击条目展开语法、取值与示例说明，帮助前端开发快速查阅属性用法，替代频繁切换文档站点。CSS Properties - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 CSS 格式化CSS Format CSS 样式表格式化：规范化选择器缩进、对齐属性、支持 @media/@supports/@keyframes 嵌套。CSS Format - format text online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development... 📐 CSS单位换算（px / em / rem / pt / %）CSS Unit Converter (px / em / rem / pt / %) 以基准字号（root/父级 px）为桥梁，在 px、em、rem、pt 与百分比等 CSS 长度单位间换算，并实时预览效果，帮助前端开发者适配响应式排版与字体缩放。Convert between CSS length units. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📊 CSV / JSON 转换器CSV JSON Converter 在线 CSV 与 JSON 双向转换工具，支持自定义分隔符、表头映射与嵌套结构，前端实时解析预览，适合数据清洗与接口联调，纯前端。CSV JSON Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT ... 📊 CSV 校验器CSV Validator CSV 校验器CSV Validator - Verify column counts are consistent, quotes are balanced and fields are non-empty, flagging bad rows. Free, browser-only. 📊 CSV 转 HTML 表格CSV to HTML Table CSV 转 HTML 表格CSV to HTML Table - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📄 CSV 转 YAML 转换器CSV to YAML Converter CSV 转 YAML 转换器CSV to YAML Converter - Paste CSV text and convert to YAML lists (first row as header) or plain arrays. Supports quoted fields. Free, browser-only. 🎲 CUID 生成器CUID Generator CUID 生成器基于时间戳与指纹生成分布式唯一 ID，避免主键冲突，支持批量生成与时间排序，适合前端或数据库主键、日志追踪等场景。CUID Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🔐 Chmod 权限计算器Chmod Permission Calculator 可视化计算 Linux 文件权限：勾选属主/组/其他用户的读(4)写(2)执行(1)权限，实时得到数字模式与符号模式，附常见权限速查。Chmod Permission Calculator - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of th... 🎲 Codabar 条形码Codabar Barcode 输入数字与起止符（A–D），实时生成 Codabar（NW-7）一维条形码图像，可调整尺寸并导出，常用于血库、物流与图书馆等场景的标签打印测试。Codabar Barcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📄 代码行数统计Code Line Counter 代码行数统计Code Line Counter - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 Code128 条形码Code128 Barcode 输入任意 ASCII 文本，生成支持全字符集的 Code128 一维条形码，自动选择 128A/B/C 子集并校验，可导出图片，适合仓储与物流条码制作。Code128 Barcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 Code39 条形码Code39 Barcode 输入字母、数字与少数符号，生成 Code39 一维条形码（无需校验位），可调节尺寸与导出，适合工业标识与资产标签的条码生成与扫描测试。Code39 Barcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. ⏰ Cron 表达式生成器Cron Expression Generator ⏰ Cron 表达式生成器Cron Expression Generator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. ⏰ Crontab 生成器Crontab Generator ⏰ Crontab 生成器Crontab Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 🗝️ DES / Triple DES (3DES) 加密解密DES / 3DES Encrypt Decrypt DES 与 Triple DES（3DES）在线加密解密工具，前端本地用密钥对文本执行对称加解密，支持多种模式与编码输出，数据不上传，纯前端。DES / 3DES Encrypt Decrypt - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📅 日期天数差Date Duration Calculator 日期天数差Enter two dates to compute the exact number of days and weeks between them, with inclusive or exclusive end-date options. Runs locally. 🐳 docker run 转 docker-composeDocker Run to Compose Converter docker run 转 docker-composePaste a docker run command and parse the image, ports, volumes, environment and restart policy into a docker-compose.yml snippet. Runs locally. 📚 Docker 命令速查Docker Command Quick Reference Docker 命令速查：容器/镜像/网络/卷/Compose/Dockerfile。Docker Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development... 🐳 Dockerfile 生成器Dockerfile Generator Dockerfile 生成器Dockerfile Generator - Choose base image, exposed port and start command to produce a usable Dockerfile. Free, browser-only. 🎲 EAN-13 条形码EAN Barcode 输入 12–13 位数字，按 EAN-13 规范生成商品条形码并计算校验位，可导出图片，用于零售商品码、图书 ISBN 条码的预览与打印前验证。EAN Barcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. ✒️ ECDSA 椭圆曲线签名ECDSA Signature / Verify ECDSA 椭圆曲线数字签名工具，支持生成密钥对、对消息签名与验签，基于 secp256k1 等曲线，纯前端实现，适合理解数字签名机制与接口签名校验。ECDSA Signature / Verify - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 Emacs 命令速查Emacs Command Quick Reference Emacs 编辑器命令速查：C-x/M-x 前缀、移动、编辑、搜索、窗口、缓冲区。Emacs Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development ... 📧 Email 规范化Email Normalization 清洗邮箱地址：去空格、转小写，并智能处理 Gmail 的点号与 + 标签（Gmail 忽略点号与 + 后缀），避免重复注册与格式错误。Email Normalization - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 😊 Emoji 选择器Emoji Picker Emoji 选择器Emoji Picker - Search emojis by keyword (Chinese or English), filter and click to copy. Built-in dataset, free, browser-only. 📚 Emoji 含义查询Emoji Meaning 按分类浏览 Emoji，查看名称、Unicode 码点和关键词。点击卡片复制 Emoji。Emoji Meaning - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 Emoji 速查表Emoji Cheatsheet Emoji 速查表收录常用表情符号、含义、Unicode 码点与分类，支持关键词搜索与一键复制，方便在社交媒体、文档与代码中快速选用合适表情。Emoji Cheatsheet - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 Git 命令速查Git Command Quick Reference 完整 Git 命令参考，包含命令、描述、参数和示例。点击示例右上角按钮可一键复制。Git Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development to... 🔐 Go 字符串转义Go String Escape 支持字符串与 rune 转义，含 \\a \\b \\f \\n \\r \\t \\v \\\\ \\' \\" \\xXX \\uXXXX \\UXXXXXXXX。Go String Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 Go 速查Go Quick Reference Go 速查：包、类型、函数、struct、接口、错误、goroutine、channel、context、模块。Go Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 GraphQL 格式化GraphQL Format ◈ GraphQL 格式化GraphQL Format - format text online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 🔐 HMAC 生成器HMAC Generator 支持 HMAC-SHA1 / SHA256 / SHA384 / SHA512。HMAC Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🔧 HTML 压缩器HTML Compressor 移除注释、多余空白与换行，保留 pre/textarea/script/style 内容。HTML Compressor - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 HTML 实体完整编解码HTML Entities Encode 输入文本，在命名实体、十进制与十六进制三种模式间编码为 HTML 实体，或反向解码还原，适合防 XSS 转义、邮件模板与网页内容安全处理。HTML Entities Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 HTML 实体转义HTML Escape HTML 实体转义工具将 <、>、&、" 等特殊字符转义为安全实体，防止 XSS 与渲染错误，支持反转义，适合在网页中安全嵌入用户输入或代码片段。HTML Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 HTML 实体速查HTML Entities 提供完整 HTML 实体速查表，点击卡片即可复制实体名与对应字符，也可输入文本自动转换为实体编码（保留普通 ASCII），便于网页特殊符号书写。HTML Entities - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧬 HTML 嵌套检查器HTML Nesting Checker 检查 HTML 标签嵌套是否合法：未闭合标签、错误嵌套、隐式闭合，报告问题行号与修复建议。HTML Nesting Checker - check and validate online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develo... 📚 HTML 标签速查HTML Label Quick Reference 一份完整的 HTML5 标签速查表，按用途分类列出语义化、表单、媒体等标签，点击任意标签即可展开查看属性、取值与示例说明，适合前端开发快速查阅。HTML Label Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔁 HTML 转 MarkdownHTML to Markdown HTML 转 MarkdownHTML to Markdown - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🔧 HTML实体编解码HTML Entity Encoder 输入文本，将 <、>、&、引号等特殊字符编码为命名或数字 HTML 实体，或反向解码，用于避免页面解析错误与脚本注入，适合前端内容转义处理。HTML Entity Encoder - encode and decode online, free and secure. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the ... 🔧 HTTP Cookie 速查HTTP Cookie Quick Reference Cookie 属性（SameSite、Secure、HttpOnly、Partitioned 等）和 JS 操作方法。HTTP Cookie Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development to... 🌐 HTTP 方法速查HTTP Methods Reference HTTP 方法速查HTTP Methods Reference - See GET/POST/PUT/PATCH/DELETE semantics, safe and idempotent flags, and typical uses. Free, browser-only. 🔧 HTTP 响应头速查HTTP Response Headers 常用 HTTP 响应头速查表，涵盖 CORS、安全、缓存、内容等分类。HTTP Response Headers - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 HTTP 方法速查HTTP Method Quick Reference HTTP 方法（GET/POST/PUT/DELETE/PATCH/OPTIONS/HEAD 等）及 WebDAV 扩展方法速查。HTTP Method Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development to... 📚 HTTP 状态码速查HTTP Status HTTP 状态码速查表汇总 1xx~5xx 全部标准状态码含义、适用场景与常见原因，支持关键词搜索，帮助开发者快速定位接口异常与排查网络问题。HTTP Status - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 HTTP 缓存策略速查HTTP Cache Strategy Quick Reference HTTP 缓存控制速查：Cache-Control、ETag、Last-Modified 等指令详解。HTTP Cache Strategy Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develo... 🔧 HTTP 请求头速查HTTP Headers 常用 HTTP 请求头速查表，包含语法、参数和示例。支持按分类筛选和关键词搜索。HTTP Headers - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 Hash ID 生成器（Hashids 算法）Hash ID Generator Hashids 算法生成器将数字 ID 编码为带盐值的短字符串，可逆且不暴露真实序号，支持自定义字母表与最小长度，适合对外暴露 URL 或资源 ID 时隐藏序号。Hash ID Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 🔍 哈希算法识别Hash Identifier 哈希算法识别Hash Identifier - Guess the algorithm (MD5/SHA1/SHA256/SHA512/BCrypt) from a hash length, charset and known prefix. Free, browser-only. 🔐 Hill 密码 (2x2 矩阵)Hill Password 输入 2×2 密钥矩阵与明文，按 C = K·P mod 26 做矩阵加密（或逆矩阵解密），演示多表代换与线性代数在古典密码中的应用，需校验矩阵模 26 可逆。Hill Password - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 INI 解析器INI Parser INI 配置解析与编辑：支持 [section]、key=value、注释、行内空格。可双向转换 INI ↔ JSON。INI Parser - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT D... 🌐 IP 子网计算器IP Subnet Calculator IP 子网计算器支持 IPv4 地址与掩码解析，自动划分网络位与主机位，输出网络地址、广播地址、可用主机范围与 CIDR，适合网络规划与子网划分。IP Subnet Calculator - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🌐 IPv4 范围展开器IPv4 Range Expander IPv4 范围展开器IPv4 Range Expander - Expand a CIDR into network, broadcast, usable host count and range. Free, browser-only. 🌐 IPv6 地址转换器IPv6 Address Converter IPv6 地址转换器IPv6 Address Converter - Switch between compressed (::) and full 8-group IPv6 forms. Free, browser-only. 🌐 IPv6 ULA 生成器IPv6 ULA Generator IPv6 ULA 生成器IPv6 ULA Generator - Generate IPv6 Unique Local Address (fd00::/8) prefixes and sample addresses with random global IDs. Free, browser-only. 🎲 ITF-14 条形码（交叉 25）ITF Barcode 输入 13–14 位数字，生成 ITF-14（交叉二五码）一维条形码，常用于纸箱与外箱物流包装标识，可调整条形比例并导出供打印测试。ITF Barcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🖼️ 图片转 Base64Image to Base64 图片转 Base64Image to Base64 - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Dev... ⚡ JS 压缩器JS Minifier JS 压缩器JS Minifier - Remove comments and extra whitespace from JavaScript for a quick size reduction, without renaming variables. Free, browser-only. 📋 JSON / TSV 转换器JSON TSV Converter JSON 与 TSV（Tab 分隔值）双向转换，支持格式化输出、数据预览、历史记录。JSON TSV Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT ... ⚖️ JSON Diff 深度对比JSON Diff Compare 逐行对比两个 JSON 数据，高亮显示新增、删除、修改的字段，支持数组智能对比JSON Diff Compare - compare online, free and clear. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developmen... 🛠️ JSON 修复器JSON Repairer JSON 修复器JSON Repairer - Fix broken JSON (trailing commas, single quotes, comments) and validate it locally. Free, browser-only. 🧬 JSON Schema 生成器JSON Schema Generator 根据 JSON 数据自动生成 JSON Schema，支持类型推断、必填字段、数组项推断、多版本输出JSON Schema Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of th... ✅ JSON Schema 验证器JSON Schema Check 使用 JSON Schema 校验 JSON 数据，支持 Draft-07 常用关键字（type、required、properties、items、enum、数值范围、字符串长度、正则、数组唯一性等…JSON Schema Check - check and validate online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developme... 🗜️ JSON 压缩/格式化JSON Compress / Format 在线 JSON 压缩与格式化工具，去除多余空白压缩体积或重新美化缩进，校验语法并高亮结构，便于接口数据传输与审阅，纯前端。JSON Compress / Format - obfuscate and minify online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🔧 JSON 格式化 / 美化 / 压缩JSON Format 在线 JSON 格式化工具，解析文本后按层级美化缩进或压缩去空白，校验语法错误并定位行列，支持高亮与折叠，便于 API 调试，纯前端。Format, validate and minify JSON with syntax highlighting and tree view. Find errors by line and column, sort keys, all instantly—free, browser-only, no upload. 📊 JSON 转 CSVJSON to CSV 把 JSON 数组一键转为 CSV 表格：自动提取所有字段为表头，支持嵌套对象序列化、下载 .csv 文件。JSON to CSV - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 🔧 JSON 转 TOMLJSON to TOML 将 JSON 转换为 TOML 格式，支持顶级键值对、嵌套表、数组、数字、布尔和 ISO 日期字符串。JSON to TOML - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develo... 🔧 JSON 转 XMLJSON to XML 将 JSON 转换为 XML，支持对象、数组、嵌套结构，可自定义根节点名。JSON to XML - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 🔧 JSON 转 YAMLJSON to YAML 将 JSON 转换为 YAML 1.2 子集格式，支持嵌套对象、数组、字符串、数字、布尔和 null。JSON to YAML - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develo... 🔧 JSON 转代码JSON to Code JSON 转代码工具将 JSON 示例一键转换为 TypeScript、Go、C#、Java、Kotlin、Rust、Python、Proto 等多种语言的数据结构定义，支持只读与导出，方便接口对接。JSON to Code - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develo... 🛣️ JSONPath 查询器JSONPath Query 使用 JSONPath 表达式从 JSON 数据中查询和提取数据，支持递归查找、切片、过滤等高级语法JSONPath Query - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🌲 JSON路径提取器JSON Path Extractor 使用点号路径（如 user.name）从 JSON 中提取字段，支持数组下标。Extract values from JSON by dot-path (e.g. user.name). Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 🔐 JS代码混淆器Js Obfuscator &#128274; JS代码混淆器Js Obfuscator - obfuscate and minify online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development... 🔧 JWT 解析JWT Parser 粘贴 JWT 即解析表头、载荷与签名三部分并解码声明，校验结构（不验证密钥），用于调试令牌与查看权限声明，纯前端。JWT Parser - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 JWT 调试器JWT Debugger 解码、验证和调试JSON Web Token，支持解析Header/Payload/Signature，检查过期时间JWT Debugger - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 🔑 JWT解码器JWT Decoder 在浏览器端安全解码 JWT 的 Header 与 Payload，无需上传令牌。Decode JWT header and payload in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 Java 字符串转义Java String Escape 支持 \b \t \n \f \r \" \' \\ \uXXXX \0-377。Java String Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 Java 速查Java Quick Reference Java 速查：类型、集合、Stream、面向对象、泛型、异常、IO、日期。Java Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 JavaScript 字符串转义JavaScript String Escape 对字符串做 JS 转义（处理引号、换行、反斜杠与 Unicode），也可反向还原，便于安全拼接到代码，纯前端即时转换。JavaScript String Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 JavaScript 格式化JavaScript Format JavaScript 代码格式化：基于词法分析规范化缩进、保留字符串与注释、支持箭头函数与解构。JavaScript Format - format text online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Deve... 🔧 JavaScript 简化器JavaScript Minify Device 移除 JavaScript 中的注释与多余空白、简化布尔与数字字面量（保护字符串），基于词法分析实现轻量级代码压缩。JavaScript Minify Device - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 KSUID 生成器（K-Sortable Unique ID）KSUID Generator KSUID 生成器生成按时间可排序的全局唯一 ID，含 32 位时间戳与随机负载，适合分布式系统中需要按生成时间排序的数据库主键与日志追踪。KSUID Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT D... ☸️ Kubernetes YAML 生成器Kubernetes YAML Generator Kubernetes YAML 生成器Kubernetes YAML Generator - Enter name, image, port and replicas to produce a Deployment plus Service manifest. Free, browser-only. 📚 Kubernetes 命令速查Kubernetes Command Quick Reference Kubernetes kubectl 命令速查：查询/部署/扩缩容/调试/YAML 示例。Kubernetes Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 📐 LaTeX 符号与命令速查LaTeX Symbol & Command Cheat Sheet LaTeX 符号与命令速查LaTeX Symbol & Command Cheat Sheet - Search common LaTeX math symbols and commands, see the notation and click to copy. Free, browser-only. 🎨 Less 转 CSS 编译器Less Compiler 在线 Less 转 CSS 编译器，基于 less.js 将 Less 预处理代码实时编译为标准 CSS，支持变量、嵌套、混合与函数，便于前端开发调试，纯前端。Less Compiler - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the I... ↩️ ↩️ 换行符转换器Line Ending Converter ↩️ 换行符转换器Line Ending Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the ... 📚 Linux 命令速查Linux Command Quick Reference Linux 命令速查：文件、文本、进程、网络、用户、磁盘、压缩、包管理、服务、定时任务，80+ 命令。Linux Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development ... 🎲 Lorem Ipsum 生成器Lorem Generator Lorem Ipsum 是印刷和排版行业的标准占位文本。自16世纪以来一直使用，让设计者可以专注于版面而无需被内容干扰。Lorem Generator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔗 MAC 地址生成器MAC Address Generator MAC 地址生成器MAC Address Generator - Generate random MAC addresses in bulk, with optional vendor OUI prefix. Copy results instantly. Free, browser-only. 📚 MAC 地址厂商查询MAC Lookup MAC 地址厂商查询工具根据 OUI 前缀识别网卡制造厂商，支持格式化输入与校验，适合网络运维排查设备来源、资产盘点与局域网管理。MAC Lookup - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. #️⃣ MD5 哈希计算器MD5 Encrypt #️⃣ MD5 哈希计算器MD5 Encrypt - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📎 MIME 类型速查MIME Type Lookup MIME 类型速查MIME Type Lookup - Map a file extension to its MIME type (e.g. json to application/json) or reverse. Free, browser-only. 📚 MIME 类型速查表MIME Type Quick Reference MIME 类型速查表汇总常见文件扩展名与 Content-Type 对应关系，支持按扩展名或类型双向检索，帮助开发者正确配置响应头、上传校验与接口联调。MIME Type Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 MSI 条形码MSI Barcode MSI 条形码在线生成器，输入数字生成 MSI Plessey 码图，支持校验位与尺寸调节，可下载 PNG/SVG，适合仓储与零售标签，纯前端。MSI Barcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 MSISDN 查询MSISDN Query MSISDN 查询工具解析手机号码的国际格式，提取国家码、运营商与号码结构，支持格式校验，适合短信网关、国际通信与号码归一化处理。MSISDN Query - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📝 Markdown 检查器Markdown Linter Markdown 检查器Markdown Linter - Check heading levels, list formatting, link syntax and duplicate headings, with fix suggestions. Free, browser-only. 📋 Markdown 表格生成器Markdown Table Generator Markdown 表格生成器Markdown Table Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of... 📝 Markdown 转 HTMLMarkdown to HTML Markdown 转 HTML 工具按 CommonMark 规范实时将 Markdown 解析为带语义标签的 HTML，支持标题、列表、表格、代码块等，适合写博客、文档与静态站点生成。Markdown to HTML - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 📝 Markdown编辑器MarkdownEditor 一个纯前端的 Markdown 编辑器，输入文本后即时渲染为预览，支持标题、列表、代码块等常用语法，并能将草稿自动保存到本地，刷新页面也不丢失。MarkdownEditor - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🏷️ Meta 标签生成器Meta Tags Generator Meta 标签生成器Meta Tags Generator - Generate SEO and social share (Open Graph / Twitter Card) meta tags from title, description, URL and image. Free, browser-only. 📚 MongoDB 命令速查MongoDB Command Quick Reference MongoDB 常用命令速查，涵盖 CRUD、聚合管道、操作符、索引与备份恢复，纯前端查阅，方便开发者随时参考。MongoDB Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developmen... 📚 MySQL 命令速查MySQL Command Quick Reference MySQL 命令速查：客户端、数据类型、约束、函数、JSON、备份、优化。MySQL Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development ... 🎲 NanoID 生成器NanoID Generator 按指定长度与字符集在前端生成 URL 友好的 NanoID 短标识符，可用于数据库主键、短链或临时令牌，全部随机过程在浏览器本地完成，数据不上传。NanoID Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT ... 🪙 Nginx 配置生成器Nginx Config Generator Nginx 配置生成器Nginx Config Generator - Pick static site or reverse proxy and fill params to emit a server block config. Free, browser-only. 📚 Nginx 配置速查Nginx Config Quick Reference Nginx 配置速查：server/location/代理/负载均衡/HTTPS/缓存/限流。Nginx Config Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development t... 🔢 Numeronym 数字缩写Numeronym Numeronym 把单词转换为数字缩写（首字母+中间字符数+尾字母）：internationalization → i18n、accessibility → a11y，批量转换整段文本。Numeronym Numeronym - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the ... 🖋️ OG 元标签生成器OG Meta Tag Generator 可视化生成 Open Graph + Twitter Card 全套 meta 标签：标题/描述/图片/URL/类型/站点名，一键复制 HTML，提升社交分享效果。OG Meta Tag Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of th... 🎲 OTP 生成器（HOTP/TOTP 简化版）OTP Generator ⏱️ OTP 生成器（HOTP/TOTP 简化版）OTP Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Dev... 🧮 PBKDF2 密钥派生PBKDF2 Key Derivation PBKDF2 密钥派生工具基于口令与盐值多次哈希生成高强度密钥，支持选择哈希算法与迭代次数，适合为密码存储、加密与认证系统派生安全密钥。PBKDF2 Key Derivation - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📜 PDF 签名检查PDF Signature Check 检查 PDF 文件是否包含数字签名：解析 PDF 内部的 ByteRange 与 Contents 引用，识别签名存在性（不做密码学验证），纯本地解析不上传。PDF Signature Check - check and validate online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 🔐 PHP 字符串转义PHP String Escape 支持单引号模式（仅转义 \\ 和 \'）与双引号模式（含 \n \r \t \xXX \uXXXX 等）。PHP String Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 PHP 速查PHP Quick Reference PHP 速查：类型、数组、字符串、函数、类、trait、异常、PDO、Composer。PHP Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 PIN 码生成器Pin Generator PIN 码生成器可批量生成指定长度的数字口令，支持不重复模式与自定义位数，适合验证码、支付密码与设备激活码等场景，纯前端随机生成。Pin Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Dev... 📞 电话号码解析与格式化Phone Number Parser & Formatter 电话号码解析与格式化Phone Number Parser & Formatter - Enter any phone number and get E.164 and grouped national/international formats by country. Free, browser-only. 📱 手机屏幕尺寸速查Phone Screen Sizes 手机屏幕尺寸速查Phone Screen Sizes - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 Plist 解析器Plist Parser Apple plist XML 解析：将 plist 转换为 JSON，支持 dict/array/string/integer/real/boolean/date/data。Plist Parser - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 📚 PostgreSQL 命令速查PostgreSQL Command Quick Reference PostgreSQL 命令速查：psql、JSONB、数组、CTE、窗口函数、扩展。PostgreSQL Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 🔢 质数检测器Prime Number Checker 质数检测器Prime Number Checker - Test if a number is prime and factor composites locally. Free, browser-only. Free online tool on ToolBox — 100% client-side, no data... 🔧 Protobuf 解析器Protobuf Parser ༐ Protobuf 解析器Protobuf Parser - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the... 🔐 Punycode 编解码Punycode Encode/Decode 国际化域名 IDN 的编码方案 (RFC 3492)，含 ACE 前缀 xn--。Punycode Encode/Decode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 Python 字符串转义Python String Escape 支持 normal / raw 双模式，\\n \\t \\r \\\\ \\' \\\" \\xXX \\uXXXX \\ooo。Python String Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 Python 格式化Python Format Python 代码格式化：基于冒号块规则规范化缩进、统一空格、折叠多余空行。Python Format - format text online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developm... 📚 Python 速查Python Quick Reference Python 语法速查，涵盖类型、数据结构、函数、面向对象、异步与标准库常用用法，纯前端查阅，方便日常编码参考。Python Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 Quoted-Printable 编解码Quoted-Printable Encode/Decode RFC 2045，非 ASCII 字节用 =XX 转义，行末用 = 表示软换行。Quoted-Printable Encode/Decode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development... 🔏 RC4 / ARC4 加密解密RC4 Encrypt Decrypt RC4/ARC4 在线加密解密工具，前端本地用密钥对文本执行对称流加解密，支持十六进制与 Base64 输出，数据不上传服务器，纯前端。RC4 Encrypt Decrypt - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 REST API 设计速查REST API Design Quick Reference REST API 设计规范：HTTP 动词、URI 设计、状态码、查询参数、错误格式。REST API Design Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developmen... 🔐 ROT 全套ROT Cipher ROT1-ROT25 字母移位，含 ROT13 / ROT47 / ROT5 / ROT18。ROT Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔑 RSA 加密解密 / 签名验证RSA Encrypt Decrypt / Signature Verify RSA 加密解密与签名验证工具支持生成密钥对、公钥加密私钥解密及消息签名验签，纯前端实现，适合理解非对称加密机制与接口安全校验。RSA Encrypt Decrypt / Signature Verify - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Dev... 🐇 Rabbit 流加密Rabbit Stream Cipher Rabbit 流加密在线工具，在前端本地用密钥对文本执行 Rabbit 对称流加密与解密，支持十六进制与 Base64 输出，数据不上传服务器。Rabbit Stream Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 随机字符串生成器Random String Generator 随机字符串生成器Random String Generator - Generate secure random strings with custom length and character sets (upper/lower/digit/symbol), batch output and one-click copy. U... 📚 Redis 命令速查Redis Command Quick Reference Redis 命令速查：String/List/Hash/Set/ZSet/Stream/事务/发布订阅。Redis Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development ... 🔍 常用正则表达式速查Regex Common 常用正则表达式速查Regex Common - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📝 富文本编辑器Rich Text Editor 富文本编辑器Rich Text Editor - Compose and format text with headings, lists, bold, italic and links, with live HTML preview and one-click copy. Runs in your browser. 🤖 Robots.txt 生成器Robots.txt Generator Robots.txt 生成器Robots.txt Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the... 🔢 罗马数字转换器Roman Numeral Converter 罗马数字转换器Roman Numeral Converter - Convert between Arabic numbers (1-3999) and Roman numerals with a live lookup table. Free, browser-only. 📚 Ruby 速查Ruby Quick Reference Ruby 速查：类型、字符串、数组、哈希、块、Lambda、类、模块、迭代器、Gem。Ruby Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 Rust 字符串转义Rust String Escape 支持字符串 "..."、字符 '...'、字节字符串 b"..."、原始字符串 r"..."。Rust String Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 Rust 速查Rust Quick Reference Rust 速查：所有权、借用、生命周期、类型、trait、错误、迭代器、Cargo。Rust Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 SHA 哈希计算器SHA Encrypt 支持 SHA-1 / SHA-256 / SHA-384 / SHA-512 安全哈希算法，使用浏览器内置 Web Crypto API 计算，本地处理不上传。SHA Encrypt - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 SMS 二维码SMS QR Code SMS 短信二维码在线生成器，输入收件号码与预置短信内容，生成可扫码直接发送短信的二维码，支持尺寸与容错调节，纯前端。SMS QR Code - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 SQL 字符串转义SQL String Escape 支持 MySQL / PostgreSQL / SQLServer 多方言。SQL String Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🗃️ SQL 格式化/美化SQL Format 支持MySQL、PostgreSQL、SQL Server、SQLite等多种SQL方言格式化美化SQL Format - format text online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development... 📚 SQL 语法速查SQL Grammar Quick Reference SQL 语法速查：SELECT/INSERT/UPDATE/DELETE/JOIN/子查询/事务/窗口函数。SQL Grammar Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development to... 📚 SQLite 命令速查SQLite Command Quick Reference SQLite 命令速查：CLI、PRAGMA、FTS5、JSON1、WAL 模式。SQLite Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development... 🗄️ SQLite 在线执行SQLite Runner SQLite 在线执行工具基于 sql.js 在浏览器内存中运行完整 SQLite 引擎，支持编写并执行多条 SQL、查看结果表，无需安装与联网，适合学习 SQL 与原型验证。SQLite Runner - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the I... 📚 SSL/TLS 知识速查Ssl Info 纯前端静态工具，用于查询 SSL/TLS 相关知识。浏览器无法直接读取远程证书，如需查看具体网站证书，请使用浏览器地址栏的锁图标或 openssl s_client 命令。Ssl Info - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🖼️ SVG 占位图生成器SVG Placeholder Image Generator 在线生成 SVG 占位图：自定义宽高、文字、背景色与文字色，实时预览，可复制 SVG 代码或下载 .svg 文件，适合原型与文档。SVG Placeholder Image Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. ... 🔓 SafeLink 解码SafeLink Decoder SafeLink 解码SafeLink Decoder - Reveal the real destination behind obfuscated or tracked URLs and strip tracking parameters safely before you click. Runs locally. 🔧 Shell 脚本格式化Shell Script Format ⌥ Shell 脚本格式化Shell Script Format - format text online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🗺️ Sitemap 生成器Sitemap Generator Sitemap 生成器Sitemap Generator - Paste one URL per line to build a standard sitemap.xml with lastmod for search engines. Free, browser-only. 🔧 TOML 转 JSON 转换器TOML to JSON Converter TOML 转 JSON 转换器TOML to JSON Converter - Paste TOML text and convert it to formatted JSON, including [section] and [[array of tables]]. Free, browser-only. 🧩 TOML 转 XML 转换器TOML to XML Converter TOML 转 XML 转换器TOML to XML Converter - Paste TOML and convert it to XML (@key as attribute). Free, browser-only. Free online tool on ToolBox — 100% client-side, no data u... 🔧 TOML 转 YAML 转换器TOML to YAML Converter TOML 转 YAML 转换器TOML to YAML Converter - Paste TOML text and convert it to YAML, including [section] and [[array of tables]]. Free, browser-only. ⚙️ TOML 格式化/转JSONTOML Format TOML配置文件格式化、验证、与JSON互转，支持Rust/Cargo/Python等配置格式TOML Format - format text online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developmen... 🧹 文本空白清理工具Text Whitespace Cleaner 文本空白清理工具Text Whitespace Cleaner - Trim line ends, remove blank lines, collapse spaces and normalize trailing newline. Pure client-side. 🔤 文本转 ASCII 码 / 二进制Text to ASCII Converter 文本转 ASCII 码 / 二进制Text to ASCII Converter - Show decimal, hex and 8-bit binary for each character. Free, instant, browser-only. 🔣 文本转 Unicode 码点Text to Unicode Codepoint 文本转 Unicode 码点Text to Unicode Codepoint - Show the U+ codepoint and UTF-16 escape for every character including CJK and emoji. Free, instant, browser-only. 🎲 TinyURL 模拟器TinyURL Simulator 本工具模拟 TinyURL 服务生成短码（不会创建真实可访问的链接，仅供演示）。TinyURL Simulator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📐 三角形计算器Triangle Calculator 三角形计算器Triangle Calculator - Compute perimeter, area (Heron) and angles from three sides, with type detection. Free, browser-only. 📘 TypeScript 转 JavaScript 编译器TypeScript Compiler 基于官方 TypeScript 5.3 编译器，将 TypeScript 代码实时编译为 JavaScript。支持选择目标版本、模块系统，并显示编译诊断信息。所有编译在浏览器本地完成，代码不会上传。TypeScript Compiler - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of... 📚 TypeScript 速查TypeScript Quick Reference TypeScript 速查：类型、接口、泛型、工具类型、类、装饰器、tsconfig。TypeScript Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 ULID 生成器ULID Generator ULID 生成器生成按字典序可排序的 26 位唯一标识符，含时间戳与随机部分，比 UUID 更适合按时间排序的数据库主键与日志追踪。ULID Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🎲 UPC-A 条形码UPC Barcode 输入 11–12 位数字，按 UPC-A 规范生成北美商品条形码并自动计算校验位，可导出图片，适合跨境电商或零售商品上架前的条码预览。UPC Barcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔗 URL 参数解析器URL Parameter Parser URL 参数解析器URL Parameter Parser - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 URL Slug 生成器URL Slug Generator URL Slug 生成器将文章标题或任意文本转为小写连字符分隔的 URL 片段，去除特殊字符与空格，支持中英文处理，适合博客、电商与 CMS 的永久链接生成。URL Slug Generator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 URL 二维码URL QR Code 将网址生成为可扫描的二维码图片，可调尺寸与容错，便于分享链接，纯前端生成不上传任何数据。URL QR Code - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔗 URL 工具集URL Encode Decode 对 URL 或参数做百分号编解码，处理中文与特殊字符，用于接口调试与链接拼接，纯前端处理文本不上传服务器。URL Encode Decode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 URL 高级编解码URL Advanced Encode/Decode 支持 URI / Component / Form / Query 多种模式。URL Advanced Encode/Decode - encode and decode online, free and secure. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part ... 🔗 URL解析器URLParser 输入一个 URL 即自动拆解出协议、域名、路径、锚点与查询参数，参数以可视化列表呈现并支持编辑增删，最后一键重新拼装为标准 URL，便于调试链接。URLParser - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🔗 USB 版本速查USB Version Reference USB 各版本（含 USB4）的传输速率、接口形态与供电能力对照速查，帮助快速比较不同 USB 标准的性能差异。Compare USB 2.0-4.0 speeds, connectors, and power delivery, with compatibility notes. Free online tool on ToolBox — 100% client-side, no data uploaded, no ... 🎲 UUID v4 生成器UUID v4 Generator UUID v4 生成器基于随机数生成 128 位唯一标识，符合 RFC 4122 标准，纯前端随机生成，适合作为数据库主键、会话标识与资源 ID。UUID v4 Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 🎲 UUID v5 生成器（SHA-1 命名空间）UUID v5 Generator UUID v5 生成器基于命名空间与 SHA-1 对名称派生确定性的 UUID，相同输入始终得到相同输出，适合需要稳定、可复现的资源标识与去重。UUID v5 Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 🎲 UUID v7 生成器UUID v7 Generator RFC 9562，时间戳排序的 UUID，前 48 位为毫秒级 Unix 时间。UUID v7 Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 🆔 UUID 生成器UUID Generator UUID 生成器在线批量生成符合 RFC 4122 的全局唯一标识符，支持版本展示与复制，适合数据库主键、追踪 ID 与分布式系统去重。Generate RFC-4122 UUIDs (v1, v4, v5), parse and inspect version and variant. Batch up to 1000, choose uppercase or no dashes—client-side, no data uploaded. 🔐 UUencode 编码 / 解码UUencode Encode/Decode Unix-to-Unix 编码，每 3 字节 → 4 字符，字符空间 32-95。UUencode Encode/Decode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 Unicode 字符查询Unicode Query Unicode 字符查询工具按码点或字符检索 Unicode 信息，展示名称、类别、UTF-8/UTF-16 编码与所属区块，支持复制，适合处理特殊字符与编码排障。Unicode Query - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 User-Agent 解析器User-Agent Parser User-Agent 解析器拆解浏览器 UA 字符串，识别浏览器、引擎、操作系统与设备类型，提供示例一键载入，适合后端日志分析、爬虫识别与兼容性判断。User-Agent Parser - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of t... 🎬 视频码率计算器Video Bitrate Calculator 视频码率计算器Estimate video file size from resolution, frame rate, duration, and bitrate, with recommended bitrates per resolution. 📚 Vim 命令速查Vim Command Quick Reference Vim 编辑器命令速查，包括模式切换、移动、编辑、搜索替换、窗口管理与寄存器操作，纯前端运行，便于随时查阅。Vim Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development to... 📶 WiFi 配网二维码生成器WiFi QR Code Generator WiFi 配网二维码生成器Generate a standard WIFI: provisioning string from your SSID, password and encryption type so phones can join the network by scanning. Runs locally in your b... 🎲 WiFi 二维码WiFi QR Code WiFi 二维码工具将 SSID、加密方式与密码编码为可扫描二维码，手机扫码即可免输密码联网，支持 WPA/WEP/无加密，适合访客网络分享与活动物料。WiFi QR Code - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧩 XML 校验器XML Validator XML 校验器XML Validator - Check XML for well-formedness: tag pairing, quoted attributes and illegal characters, with error location. Free, browser-only. 🧩 XML 转 TOML 转换器XML to TOML Converter XML 转 TOML 转换器XML to TOML Converter - Paste XML and convert it to TOML (attributes as @key). Free, browser-only. Free online tool on ToolBox — 100% client-side, no data ... 🧩 XML 转 YAML 转换器XML to YAML Converter XML 转 YAML 转换器XML to YAML Converter - Paste XML and convert it to YAML (attributes as @key, text as #text). Free, browser-only. 🔧 XML 格式化XML Format XML 格式化与压缩，支持属性、CDATA、注释、命名空间。可自定义缩进。XML Format - format text online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development... 🔧 XML 转 JSONXML to JSON 将 XML 转换为 JSON，元素为对象、属性加 @ 前缀、文本内容为 #text。XML to JSON - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 🔐 XOR 加密 / 解密XOR Encrypt Decrypt 用指定的密钥对文本做按位异或（XOR）处理，密钥逐字节循环复用，同一操作既可加密也可解密，适合理解对称流加密原理或进行简单字符串混淆。XOR Encrypt Decrypt - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔰 XXTEA 加密解密XXTEA Encrypt Decrypt XXTEA 在线加密解密工具，前端本地用密钥对文本执行分组对称加解密，较 TEA 更安全，支持编码输出，数据不上传，纯前端。XXTEA Encrypt Decrypt - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 XXencode 编码 / 解码XXencode Encode/Decode 类似 UUencode，但使用 +-/0-9A-Za-z 字符集，可避免特殊字符问题。XXencode Encode/Decode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 YAML 转 JSON 转换器YAML to JSON Converter YAML 转 JSON 转换器YAML to JSON Converter - Paste YAML text and convert it to formatted JSON with nested maps and lists. Free, browser-only. 🔧 YAML 转 TOML 转换器YAML to TOML Converter YAML 转 TOML 转换器YAML to TOML Converter - Paste YAML text and convert it to TOML with nested tables, arrays and common scalars. Free, browser-only. 🧩 YAML 转 XML 转换器YAML to XML Converter YAML 转 XML 转换器YAML to XML Converter - Paste YAML and convert it to XML (@key as attribute, #text as element text). Free, browser-only. 📝 YAML 格式化/验证/转JSONYAML Format 在线YAML格式化工具，支持语法验证、美化压缩、YAML与JSON互相转换，纯前端本地处理YAML Format - format text online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developmen... 📄 YAML 语法验证器YAML Grammar Verifier 在线校验 YAML 语法、定位错误行列、统计文档结构，并一键转换为格式化 JSON，支持多文档（--- 分隔）。YAML Grammar Verifier - check and validate online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Devel... 🧭 curl 命令解析器curl Command Parser curl 命令解析器curl Command Parser - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of... 📚 tmux 命令速查tmux Command Quick Reference 一份 tmux 终端复用器的命令速查表，汇总会话、窗口、窗格切换、复制模式与常用配置快捷键，按场景分组排列，方便在终端操作中快速检索记忆。tmux Command Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development t... 🎲 二维码生成器Qrcode 二维码生成器将文本、网址、名片等信息即时编码为可扫描的 QR 码，支持自定义尺寸与容错等级，纯前端生成，适合分享链接、WiFi 与活动物料。Qrcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎨 二维码美化生成器QR Code Beautify Generator 生成个性化彩色二维码：自定义前景/背景色、容错级别与模块圆角样式，实时预览并下载 PNG，适合名片、海报与品牌物料。QR Code Beautify Generator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 二维码解码（手动输入解析）QR Code Decode 本工具用于解析已知二维码文本内容的格式与含义（不支持从图片识别）。粘贴扫描得到的内容即可自动识别类型。QR Code Decode - encode and decode online, free and secure. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT De... 🔐 二进制字符串编解码Binary Encode 将输入文本按 UTF-8 编码为每个字符 8 位二进制串，或将二进制字符串还原为原文，支持查看字节流，适合理解字符编码与做二进制数据转换练习。Binary Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 二进制转文本Binary to Text 输入以空格、短横线或点等分隔的二进制串，按每 8 位解析为一个 UTF-8 字节并还原为文本，自动忽略分隔符，便于从网络抓包或编码作业里快速还原内容。Binary to Text - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Deve... ✅ 二项分布计算器Binomial Distribution 二项分布在线计算器，输入试验次数 n、成功概率 p 与成功次数 k，计算恰好 k 次及累积概率，用于质量与统计推断，纯前端运行。Binomial Distribution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎨 代码语法高亮Code Syntax Highlighting &#127912; 代码语法高亮Code Syntax Highlighting - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔢 任意进制转换器Integer Base Converter 支持 2-36 进制任意互转与超大整数（BigInt）：输入数字与源进制，实时得到目标进制结果，附二进制/八进制/十进制/十六进制一览。Integer Base Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the... 🔐 仿射密码 (Affine Cipher)Affine Cipher 输入密钥 a、b（a 需与 26 互素），按 C = (a·P + b) mod 26 加密、反函数解密英文字母，并校验密钥可逆性，适合学习模运算与单表代换密码。Affine Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 优惠券码生成器Coupon Code Generator 优惠券码在线生成器，批量生成促销码或折扣码，支持前缀、分组与字符集，用于营销活动测试，数据本地生成不上传，纯前端。Coupon Code Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of th... 🎲 位置二维码Location QR 位置二维码在线生成器，输入经纬度或地址生成地理坐标二维码，扫码可在地图打开位置，支持尺寸与容错调节，纯前端运行。Location QR - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 位运算计算器Bitwise Calculator 32 位位运算计算器：AND/OR/XOR/NOT/左移/右移，支持十进制/十六进制/二进制输入，实时可视化位翻转。Bitwise Calculator - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Deve... 🎲 假数据生成器Fake Data 假数据在线生成器，批量生成姓名、地址、邮箱、电话等模拟数据，可设字段与数量，用于开发测试与演示填充，数据本地生成不上传。Fake Data - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 八进制字符串编解码Octal Encode 把输入的文本或字节流按每字节转换为 3 位八进制数（000–377），也可反向将八进制串还原为原始字符串，常用于底层编码调试与文件格式查看。Octal Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📈 关键词密度分析器Keyword Density Analyzer 输入文本，分析各关键词出现频率、密度占比与词汇丰富度，支持中英文混合分析，适用于 SEO 优化与内容质量检查。Keyword Density Analyzer - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🏷️ 关键词提取Keyword Extract &#127991;&#65039; 关键词提取Keyword Extract - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 凯撒密码Caesar Cipher 输入明文（或密文）与移位密钥 k，按凯撒密码 C=(P+k) mod 26 进行加密或解密，演示经典移位密码的工作原理。Caesar Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📋 列表转换器List Converter 把逐行列表一键转为各种格式：逗号分隔、JSON 数组、SQL IN 子句、HTML 列表、引号包裹、竖线分隔、CSV，开发数据处理必备。List Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Deve... 📻 北约音标字母转换NATO Phonetic Alphabet Convert 把文本转换为北约音标字母（Alpha/Bravo/Charlie...），支持正反双向转换：字母→音标词、音标词→字母，适合无线电通话、电话报号。NATO Phonetic Alphabet Convert - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development... 📚 区域设置查询（Locale）Locale Lookup 区域设置 Locale 查询工具解析语言与地区组合代码（如 zh-CN），展示语言、书写脚本与地区信息，帮助国际化开发中正确配置本地化参数与格式化规则。Locale Lookup - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 十六进制编解码Hex Encode 在文本与十六进制之间编解码，支持分隔与大小写，用于调试字节流与数据查看，纯前端处理文本不上传。Hex Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 十六进制转文本Hex to Text 输入十六进制串（自动忽略 0x 前缀、空白与常见分隔符），每 2 位解析为一个字节并还原为 UTF-8 文本，适合从内存转储、网络报文中还原可读字符串。Hex to Text - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 🔐 十进制 ASCII 码编解码Decimal Encode 将输入文本的每个字节转换为 0–255 的十进制数字（或反向解码），便于在协议调试、教学演示中直观查看字符的十进制编码表示。Decimal Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 单样本 Z 检验Hypothesis Test 单样本 Z 检验计算器用于检验样本均值与已知总体均值是否存在显著差异，输入样本数据、总体标准差与显著性水平，输出 Z 值与 p 值，适合假设检验入门。Hypothesis Test - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 向量叉积Vector Cross Product 输入两个三维向量 A 与 B 的分量，计算它们的叉积 A×B，结果向量同时垂直于 A 和 B，常用于几何与物理计算。Vector Cross Product - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 向量模长Vector Magnitude 向量模长在线计算器，输入向量各分量求欧几里得长度，支持高维向量，用于几何与物理运算，实时显示结果，纯前端运行。Vector Magnitude - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 向量点积Vector Dot Product 向量点积在线计算器，输入两个等长向量的分量，求数量积与夹角余弦，用于几何与机器学习特征运算，实时显示结果，纯前端。Vector Dot Product - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 哈希值生成器Hash Value Generator 在浏览器端计算 MD5、SHA-1、SHA-256、SHA-512 哈希值。Compute MD5, SHA-1, SHA-256 hashes locally. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. #️⃣ 哈希计算器Hash Calculator 在线哈希计算器，对文本或文件计算 MD5、SHA-1、SHA-256 等多种摘要，支持文件拖拽与编码选择，用于校验完整性，数据本地计算不上传。Hash Calculator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 团队名生成器Team Name Generator 团队名在线生成器，组合行业词、意象词与后缀生成独特团队或项目名称，可设风格与长度，一键复制，适合创业与活动，纯前端。Team Name Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the ... 📚 国家代码与旗帜Country Flag 国家代码与旗帜在线查询工具，按国家名或 ISO 代码检索国旗 emoji、国际区号与顶级域，适合国际化开发参考，纯前端运行。Country Flag - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 国家代码查询Country Code Lookup 国家代码在线查询工具，按国家名或 ISO 代码检索国际电话区号、国旗与顶级域，方便国际通讯与开发参考，纯前端运行。Country Code Lookup - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. ▶️ 在线代码运行器Code Runner &#9654;&#65039; 在线代码运行器Code Runner - run / process online, free and in your browser. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT ... 🧮 均匀分布计算器Uniform Distribution 均匀分布在线计算器，输入区间上下限求概率密度、累积概率与分位数，用于随机模拟与统计教学，纯前端运行。Uniform Distribution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 埃特巴什码 (Atbash Cipher)Atbash Cipher A ↔ Z, B ↔ Y, C ↔ X ... 第一个字母对应最后一个字母Atbash Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 域名生成器Domain Generator 域名在线生成器，组合关键词、行业词与后缀建议可用域名创意，适合建站选名与品牌构思，纯前端运行。Domain Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT ... 🔐 培根密码 (Bacon Cipher)Bacon Cipher 每个字母编码为 5 位 a/b（A=aaaaa, B=aaaab...）。Bacon Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 多格式字符编码器Char Encoder 同时显示 ASCII / Unicode / HTML / URL / Base64 / Hex / Binary / Octal 等多种格式。Char Encoder - encode and decode online, free and secure. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Deve... 🧬 多算法哈希器Hash Multi 一键计算多种哈希：MD5 / SHA-1 / SHA-256 / SHA-512 / CRC32，支持多算法同时输出与大小写切换。SHA 走浏览器原生 crypto.subtle，全程本地。Hash Multi - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔤 大小写转换器Case Converter - &# 128296 ; Case Converter &#128296; 大小写转换器Case Converter - &# 128296 ; Case Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, ... 🎭 字符串混淆器String Obfuscation Obfuscator 把文本转为难以阅读的形式：Unicode 全角、倒序、ROT13、Base64、十六进制转义、HTML 实体，一键复制，常用于代码/脚本混淆。String Obfuscation Obfuscator - obfuscate and minify online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of th... 📝 字符串长度统计String Length Counter 粘贴文本后统计字符数、UTF-8 字节数、行数、词数、空格数与中文字符数，并按编码显示占用，适合文案字数核对、数据库字段长度评估与 SEO 字数校验。Count characters, bytes, lines, words and spaces. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development ... 🛡️ 密码强度检测Password Strength Detect 本地检测密码强度，估算暴力破解时间，所有计算在浏览器完成，密码不上传。Password Strength Detect - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 密码生成器（IT）Password Generator ( IT ) 在线生成高强度随机密码与密码短语，所有计算在浏览器本地完成，密码不会上传服务器。Create strong random passwords with length and character sets. Crypto-secure randomness, excludes ambiguous chars, shows entropy in bits—free, browser-only. 🎲 序列号生成器Serial Key Generator 序列号在线生成器，按格式批量生成产品密钥或授权码，支持分段、前缀与字符集，用于测试与演示，数据本地生成不上传，纯前端。Serial Key Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the... 🎲 恢复码生成器Recovery Code Generator 账户恢复码在线生成器，批量生成随机恢复码用于两步验证备用，可设长度与数量并下载，数据本地生成不上传，纯前端。Recovery Code Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of ... 🎲 打字速度测试Typing Test 打字速度测试工具通过随机或自定义文本测量打字速度与准确率，实时统计 WPM 与错误数，适合练习盲打、评估输入效率与趣味比拼。Typing Test - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 指数分布计算器Exponent Distribution Calculator 指数分布计算器用于求取事件发生间隔的概率与分位数，输入速率参数 λ 与取值 x，输出概率密度与累积概率，适合可靠性分析与排队论建模。Exponent Distribution Calculator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developme... ⌨️ 按键码 Keycode 查询Key Code Keycode Query ⌨️ 按键码 Keycode 查询Key Code Keycode Query - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📹 摄像头录制Camera Recording 在线摄像头录制工具，浏览器内调用设备摄像头实时录制视频并下载 WebM，支持分辨率选择，数据本地处理不上传，纯前端。Camera Recording - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📝 摘要生成器Summary Generator &#x1F4DD; 摘要生成器Summary Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 🔐 摩斯电码增强版Morse Code Enhanced 将文本或摩斯电码双向转换，覆盖全部英文字母、数字、标点符号以及 Prosigns 特殊信号，可逐字符高亮对照，适合无线电爱好者与电报学习演练。Morse Code Enhanced - encode and decode online, free and secure. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the ... 🔐 摩斯电码转换Morse Code Convert 摩斯电码转换工具支持文本与摩斯码双向互转，含点划规则说明与字符表，点击字符可自动填入，适合无线电爱好者学习、应急通信练习与编码趣味演示。Morse Code Convert - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 数学表达式求值器Math Expression Evaluate Device - Online Calculate Math Expression : Support + - * / % ^ ( 在线计算数学表达式：支持 + - * / % ^ ( ) 与 sin/cos/tan/sqrt/abs/ln/log/floor/ceil/round/min/max 等函数，自动保存最近 20 条历…Math Expression Evaluate Device - Online Calculate Math Expression : Support + - * / % ^ ( - free online tool. 💾 文件大小单位换算File Size Unit Converter 输入字节数或带单位的大小，在十进制（SI，1 KB=1000 B）与二进制（IEC，1 KiB=1024 B）单位间快速换算，显示 B/KB/MB/GB 等多种表示，便于存储与带宽估算。Convert file sizes between decimal (SI) and binary (IEC) units. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the I... 🔢 文本 / 二进制转换Text to Binary 支持文本与二进制的双向转换，可处理 ASCII/Unicode 字符、自定义分隔符并批量转换，便于编码学习与数据调试。Text to Binary - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Deve... 🔟 文本 / 八进制转换Text to Octal 支持文本与八进制的双向转换，可处理 ASCII/Unicode 字符、自定义分隔符并批量转换，便于查看字符的八进制编码。Text to Octal - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Devel... #️⃣ 文本 / 十六进制转换Text to Hex #️⃣ 文本 / 十六进制转换Text to Hex - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Develop... 🔢 文本 / 十进制 ASCII 码转换Text to Decimal 支持文本与十进制的双向转换，可处理 ASCII/Unicode 字符、自定义分隔符并批量转换，便于查看字符的十进制编码。Text to Decimal - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Dev... 🎲 文本二维码Text QR Code 文本二维码在线生成器，输入任意文字生成可扫码二维码，支持尺寸、容错与配色调节，一键下载 PNG/SVG，适合分享短信息，纯前端。Text QR Code - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📝 文本去重排序工具Text Deduplicate Sort 对文本行进行去重、排序、反转等处理，支持多种分隔符与组合操作，全部在浏览器本地完成。Text Deduplicate Sort - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📊 文本对比工具Text Compare 在线文本对比工具，逐行或字符级高亮两段文本差异，快速定位增删改，适合代码评审与文档校订，纯前端运行。Text Compare - compare online, free and clear. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. ✂️ 文本截断工具Text Truncate 在线文本截断工具，按指定长度或行数截断文本并添加省略号，支持中英文与按词边界截断，适合摘要生成与展示截断，纯前端。Text Truncate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔄 文本替换工具Text Replace 在原文中执行文本替换，既支持普通字符串替换，也支持正则表达式替换，实时标出所有匹配位置并预览替换结果，方便在批量修改前确认改动范围。Text Replace - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧹 文本清理工具Text Cleaner 把待处理文本粘贴进来，勾选去除空行、多余空格、不可见字符或统一换行等选项，一键批量清理，结果可直接复制，适合整理从网页复制来的杂乱文字。Text Cleaner - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📊 文本相似度计算器Text Similarity &#128202; 文本相似度计算器Text Similarity - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📊 文本统计分析Text Statistics Analysis 文本统计分析工具统计中英文混合文本的字数、词频、字符数与预计阅读时间，支持实时计数，适合写作字数统计、内容运营与文案长度把控。Text Statistics Analysis - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🕵️ 文本隐写工具Text Steganography 将秘密信息隐藏在看似普通的文本中，支持零宽字符、藏头诗、空格编码等多种隐写技术Text Steganography - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. ⏱️ 时间戳转换器Timestamp Convert 时间戳转换器支持 Unix 秒/毫秒时间戳与日期时间互转，支持本地与 UTC 时区显示，适合日志排查、接口调试与跨时区时间换算。Timestamp Convert - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT D... 🕒 时间格式转换Time Format Convert 时间格式转换Time Format Convert - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 🎲 昵称生成器Nickname Generator 在线昵称生成器，组合形容词、名词与数字生成个性化网名，可设风格与长度，一键复制，适合社交与游戏账号，纯前端运行。Nickname Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the I... 🔐 普莱费尔密码 (Playfair Cipher)Playfair Cipher Playfair 密码工具实现双字母替换加密，基于 5×5 密钥矩阵对明文成对加密，支持自定义关键词，适合了解古典密码学原理与教学演示。Playfair Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 栅栏密码 (Rail Fence)Rail Fence Cipher 实现栅栏密码（Rail Fence）的加解密：按设定的栏数把明文沿锯齿形（zigzag）路径写入，再按行读出得到密文，反向操作即可还原，用于古典密码演示。Rail Fence Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 标准差计算器Standard Deviation Calculator 标准差在线计算器，输入数据集自动计算样本或总体标准差与方差，衡量数据离散程度，支持批量粘贴，适合统计教学，纯前端。Standard Deviation Calculator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development ... 📐 正则表达式可视化Regex Visualization 粘贴一段正则表达式，工具在前端将其语法结构解析为彩色的树状可视化图，直观展示分组、量词与字符类层级，帮助开发者理解复杂正则的匹配逻辑。Regex Visualization - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 正则表达式字符转义Regex Expression Character Escape 转义正则元字符 \ ^ $ * + ? . ( ) | { } [ ]。Regex Expression Character Escape - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developm... 🔍 正则表达式测试器Regex Expression Test 粘贴测试文本并输入正则表达式，实时高亮所有匹配片段，支持查找替换与分组捕获展示，可逐条查看每个捕获组的取值，便于调试正则逻辑。Test and debug regex with live matching, group highlighting and find-replace. Supports case-insensitive, multiline and global flags—client-side, no upload. 📚 正则表达式速查Regex Expression Quick Reference 正则表达式语法速查：元字符、量词、断言、回溯引用、Unicode、JS 方法。Regex Expression Quick Reference - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developme... 🧮 正态分布计算器Normal Distribution 正态分布在线计算器，输入均值、标准差与区间，计算概率密度、累积概率与分位数，用于统计推断与质量分析，纯前端运行。Normal Distribution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 泊松分布计算器Poisson Distribution 泊松分布在线计算器，输入单位时间平均发生次数 λ 与次数 k，计算恰好 k 次及累积概率，用于稀有事件建模，纯前端运行。Poisson Distribution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 波利比奥斯方阵密码 (Polybius)Polybius Square Password 基于 5×5 方阵（I/J 共用一格）的古典密码工具，将明文每个字母替换为对应的行号与列号数字，也可反向把数字对还原为字母，适合密码学入门练习。Polybius Square Password - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 游戏标签生成器Game Label Generator 游戏标签（Gamertag）在线生成器，组合风格词、数字与符号生成独特玩家名，可设长度与主题，一键复制，适合游戏账号注册，纯前端。Game Label Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the... ⚙️ 环境变量生成器Env Generator 快速生成 .env、Docker Compose、JSON、YAML、Shell 等格式的环境变量配置文件Env Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Dev... 💻 环境变量生成器（.env格式）Generator 16 按键值对生成 .env 格式文本，支持批量与注释，便于项目配置管理与示例，纯前端生成可复制不存储。Generator 16 - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Deve... 🎲 用户名生成器Username Generator 用户名在线生成器，组合词根、数字与符号生成可用账号名，可设长度与风格，一键复制，适合注册与测试账号，纯前端运行。Username Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the I... 🎲 番茄钟计时器Pomodoro Timer Timer Device 在线番茄钟计时器，按 25 分钟专注+5 分钟休息循环管理时间，可自定义时长与轮次，本地记录专注统计，适合高效工作法，纯前端。Pomodoro Timer Timer Device - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development to... 🧮 矩阵乘法Matrix Multiplier 输入两个矩阵 A 和 B 的各元素数值，工具按 C = A × B 规则计算乘积矩阵（要求 A 的列数等于 B 的行数），常用于线性代数与图形变换的运算验证。Matrix Multiplier - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 矩阵求逆Matrix Inverter 矩阵求逆在线计算器，输入可逆方阵求得逆矩阵，支持高阶与小数，结果可复制，适合线性代数与工程计算，纯前端运行。Matrix Inverter - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 矩阵行列式Matrix Determinant 矩阵行列式在线计算器，输入方阵元素按余子式展开计算行列式值，支持高阶矩阵，步骤可视化，适合线性代数学习，纯前端。Matrix Determinant - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 矩阵转置Matrix Transpose 将矩阵 A 的行列互换得到 Aᵀ。若 A 为 m×n，则 Aᵀ 为 n×m。Matrix Transpose - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 短链接生成器Short Link Generator 短链接在线生成器，将长网址编码为简短易记的短链，支持自定义后缀与批量生成，便于分享与统计，本地编码不上传原链接，纯前端。Short Link Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the... 🧮 统计功效计算器Statistical Power 统计功效（Power）在线计算器，输入效应量、样本量与显著性水平，求得检验把握度，用于实验设计与样本量规划，纯前端。Statistical Power - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 维吉尼亚密码Vigenère Cipher Visualization 以可视化方阵展示维吉尼亚密码：行对应密钥字母、列对应明文字母，交叉点即密文字母。输入明文与关键词即可逐步演示多表替换加密过程，并给出密文。Vigenère Cipher Visualization - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development ... 🧩 编码识别器Charset Detector 编码识别器Charset Detector - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 置信区间计算器Confidence Interval 置信区间在线计算器，输入样本均值、标准差与样本量，按正态或 t 分布求得指定置信水平的区间估计，用于统计推断，纯前端。Confidence Interval - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 美国区号查询Area Code Lookup 美国电话区号在线查询工具，按区号或城市检索所属州与覆盖地区，也可反向查询，适合国际通讯与资料核对，纯前端运行。Area Code Lookup - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 计圈记录Stopwatch 在线秒表与倒计时工具，支持开始/暂停/计圈记录每圈耗时，可设多组倒计时提醒，适合运动训练与计时场景，纯前端运行。Stopwatch - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 设备与浏览器信息Device Info View Device 在浏览器本地解析并展示用户代理、屏幕分辨率、操作系统、浏览器版本、语言与触控支持等设备信息，全部本地读取不上传，方便前端适配调试与兼容性排查。Device Info View Device - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 语言代码查询（ISO 639-1）Language Code Query ISO 639-1 语言代码查询工具，输入语言名称或两位字母代码即可查得对应编码与中文名称，支持双向检索，适合处理多语言站点、API 区域参数与本地化配置。Language Code Query - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 误差范围计算器Margin of Error 误差范围（Margin of Error）在线计算器，输入样本量、比例与置信水平求得抽样误差区间，用于民调与统计推断，纯前端运行。Margin of Error - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 贝叶斯定理计算器Bayes Theorem 输入先验概率与条件概率（如检测的灵敏度、特异度与患病率），按贝叶斯定理计算后验概率，用于医学筛查、垃圾邮件识别等场景下的结果可信度评估。Bayes Theorem - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 超几何分布计算器Hypergeometric Distribution 超几何分布计算器用于不放回抽样场景，输入总体 N、成功数 K 与抽样数 n，求取抽中 k 个成功项的概率与累积概率，适合质量抽检与彩票概率分析。Hypergeometric Distribution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development to... 🔢 进制转换器（IT）Number Base Converter (IT) 在 2~36 进制之间任意转换数字，支持二进制、八进制、十进制、十六进制。Convert numbers between bases 2-36. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔢 进制转换计算器Base Converter Calculator 在线进制转换器，支持二进制、八进制、十进制、十六进制及任意 2-36 进制互转，实时计算并显示各进制结果，适合编程与教学，纯前端。Base Converter Calculator - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of ... 🎲 邀请码生成器Invite Code Generator 生成带校验的随机邀请码，可设长度与字符集并批量导出，用于内测发放与活动白名单，纯前端生成不联网。Invite Code Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of th... 🎲 邮件二维码Email QR Code 邮件二维码在线生成器，输入收件人、主题与正文生成可扫码直接撰写邮件的二维码，支持尺寸调节，纯前端运行。Email QR Code - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎟️ 随机 Token 生成器Random Token Generator 基于浏览器加密级随机数（crypto.getRandomValues）批量生成高强度 Token：自定义长度、字符集、数量，一键复制。Random Token Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of t... 👤 随机中文名生成器Chinese Name Generator 基于百家姓与常用名用字，随机生成现代、古风、文艺等不同风格的中文姓名，适合起名灵感或测试数据生成。Chinese Name Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of t... 🎲 随机数生成器Random 在线随机数生成器，支持设定范围、数量与是否允许重复，生成整数或小数随机序列，可设种子复现，适合抽样与游戏，纯前端。Random - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🌐 随机端口生成器Random Port Generator - Batch Generate 1024-65535 Random TCP / UDP 批量生成 1024-65535 随机 TCP/UDP 端口，可自动避开常用保留端口，附常见端口速查表。Random Port Generator - Batch Generate 1024-65535 Random TCP / UDP - generate results online, free and instant. 🪪 随机身份证号生成器ID Card Generator 随机身份证号生成器：可按地区、性别、出生年份生成，也可反向解析号码归属。ID Card Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 💳 随机银行卡号生成器Bank Card Generator 基于真实银行 BIN 前缀，使用 Luhn 算法生成符合校验规则的随机银行卡号Bank Card Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the ... 🎨 颜色值转换器Color Value Converter (HEX / RGB / HSL) 输入 HEX、RGB 或 HSL 任一种颜色值，实时在三者间互相转换并预览色块，方便前端与设计师在代码中精确选取与核对颜色，避免色差。Convert colors between HEX, RGB and HSL with live preview. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Dev... 🎨 颜色转换器Color Converter 在线颜色转换器，支持 HEX、RGB、HSL、CMYK、HSV 等多种格式互转，实时预览并复制结果，适合设计与前端开发取色，纯前端运行。Color Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Dev... 🔐 验证码生成器Captcha Generator &#128274; 验证码生成器Captcha Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT... 🎲 高级 Slug 生成器Advanced Slug Generator 高级 Slug 生成器将标题、中文或混合文本转换为 URL 友好字符串，支持自定义分隔符、大小写、停用词与多语言拼音转写，适合生成 SEO 友好的链接。Advanced Slug Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of ...