💻 IT 開發工具

🚫 .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、行內註釋、行尾反斜槓續行。.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 密碼A1Z26 Password 按 A=1、B=2、…、Z=26 的規則，將英文字母消息編碼為數字序列，或將數字串解碼回字母，適合密碼學入門練習與趣味密信的寫作和破譯。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 密碼ADFGVX Password 復現一戰德軍使用的 ADFGVX 密碼：先以 6×6 方陣（A–Z + 0–9）將明文替換為雙字母，再按密鑰做列置換打亂，支持加密與解密，用於古典密碼教學演示。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 簽名生成器API Signature Generator API 簽名生成器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 輸入文字，自動轉換為由 ASCII 字符拼成的「大字」橫幅（figlet 風格），可切換字體並複製結果，用於終端歡迎語、代碼註釋或社交平台裝飾排版。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 列出標準 ASCII 碼（0–127）的十進制、十六進制與字符對照，點擊即可複製對應編碼，供程序員查閲控制字符、可打印字符與編碼邊界。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 目錄樹生成器ASCII Directory Tree Generator 把路徑列表一鍵生成 ASCII 目錄樹（├── └── │ 風格），支持文件/資料夾標記，複製進 README 或文檔。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 抽象語法樹查看器AST AST View Device - AST ( Abstract Syntax Tree 在線 AST 查看器，用 acorn 解析 JavaScript 源碼為抽象語法樹並可視化展開節點，幫助理解代碼結構，支持摺疊與定位，純前端。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... 🔁 高級單位轉換器Advanced Unit Converter 高級單位轉換器Convert across length, mass, temperature, area, volume, time, speed and data storage with all common units shown at once. Runs locally. 🪙 BIP39 助記詞生成器BIP39 Mnemonic Generator 生成符合 BIP39 標準的加密貨幣助記詞（12/15/18/21/24 詞）：基於瀏覽器加密級隨機數，支持批量生成，可複製為逗號/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 編碼 / 解碼Base32 Encode/Decode 按 RFC 4648 字符集（A–Z 與 2–7）進行 Base32 編碼與解碼，支持不區分大小寫解碼，純前端本地處理、數據不上傳。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 編碼 / 解碼Base58 Encode/Decode 輸入文本或字節，使用去除 0/O/I/l 等易混字符的 Base58 字母表進行編碼或解碼，常用於比特幣地址與短鏈場景，避免複製時產生歧義字符。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 文件轉換Base64 File Convert 文件與 Base64 互轉：圖片/文檔/壓縮包轉 Base64 字符串（含 data URI 前綴選項），或粘貼 Base64 還原為文件下載。純本地處理，文件不上傳。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 編解碼工具Base64 Encode/Decode 支持 Base64 / Base32 / Base85 編碼解碼，文本、文件、批量三種模式，純前端本地處理。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 編碼 / 解碼Base85 Encode/Decode 支持 Ascii85（Adobe 變體，含 <~ ~> 包裹）與 Z85（ZeroMQ）雙模式。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 一鍵生成 HTTP Basic 認證所需的 Authorization 頭與 URL 形式：用户名+密碼 → Base64 令牌，支持中文用户名，供接口調試與開發使用。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 編碼Baudot / ITA2 Encode 輸入文本，按 5 位 Baudot/ITA2 電傳碼編碼為比特流（含字母/數字模式切換字符），或反向解碼，適合瞭解早期電傳打字機通信與復古編碼實驗。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/校驗Bcrypt Hash / Check - Bcrypt Bcrypt 在線哈希與校驗工具，前端本地對密碼執行 Bcrypt 加鹽哈希（可設成本因子），或校驗明文與哈希是否匹配，數據不上傳，純前端。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 基準測試Benchmark Benchmark 在線測量瀏覽器 JavaScript 運算性能：整數/浮點/字符串/數組/對象五種負載，每秒操作數（ops/sec）對比，一鍵複製測試代碼。Benchmark Benchmark - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔷 藍牙版本速查Bluetooth Version Reference 藍牙版本速查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 可視化 CSS box-shadow 生成器：偏移/模糊/擴散/顏色/內陰影實時調節，實時預覽並複製 CSS 代碼。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：類型、集合、LINQ、類、屬性、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：類型、STL、智能指針、類、模板、Lambda、現代特性、異常、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++ 字符串轉義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 記錄生成器CAA Record Generator - Generate DNS CAA 生成 DNS CAA 記錄：指定域名與允許的證書頒發機構，輸出標準 CAA 資源記錄，防止證書誤簽發。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 計算器CRC Calculator 支持 CRC8 / CRC16 / CRC32 / CRC64 多種變體。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 壓縮器CSS Minifier CSS 壓縮器CSS Minifier - Strip comments and redundant whitespace to shrink CSS for faster loads, preserving semantics. Free, browser-only. 📐 CSS clamp 計算器CSS clamp Calculator 響應式字號 clamp() 計算器：輸入最小/首選/最大字號與視口範圍，生成流暢縮放表達式並實時預覽。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 壓縮/格式化/美化CSS Compress / Beautify 在線 CSS 壓縮與美化工具，去除註釋空白壓縮體積或重新格式化縮進，保留語義便於維護，適合前端構建與調試，純前端運行。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 字符串轉義CSS String Escape 按 CSS.escape 規範，對標識符與字符串兩種模式進行 CSS 轉義處理，純前端本地運算，方便生成安全的 CSS 選擇器。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 屬性速查CSS Properties 按分類列出完整 CSS 屬性速查表，點擊條目展開語法、取值與示例説明，幫助前端開發快速查閲屬性用法，替代頻繁切換文檔站點。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 樣式表格式化：規範化選擇器縮進、對齊屬性、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單位換算（px / em / rem / pt / %）CSS Unit Converter (px / em / rem / pt / %) 以基準字號（root/父級 px）為橋樑，在 px、em、rem、pt 與百分比等 CSS 長度單位間換算，並實時預覽效果，幫助前端開發者適配響應式排版與字體縮放。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 轉換器CSV JSON Converter 在線 CSV 與 JSON 雙向轉換工具，支持自定義分隔符、表頭映射與嵌套結構，前端實時解析預覽，適合數據清洗與接口聯調，純前端。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 校驗器CSV Validator CSV 校驗器CSV Validator - Verify column counts are consistent, quotes are balanced and fields are non-empty, flagging bad rows. Free, browser-only. 📊 CSV 轉 HTML 表格CSV to HTML Table CSV 轉 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 轉 YAML 轉換器CSV to YAML Converter CSV 轉 YAML 轉換器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 生成器基於時間戳與指紋生成分佈式唯一 ID，避免主鍵衝突，支持批量生成與時間排序，適合前端或數據庫主鍵、日誌追蹤等場景。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 權限計算器Chmod Permission Calculator 可視化計算 Linux 文件權限：勾選屬主/組/其他用户的讀(4)寫(2)執行(1)權限，實時得到數字模式與符號模式，附常見權限速查。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 條形碼Codabar Barcode 輸入數字與起止符（A–D），實時生成 Codabar（NW-7）一維條形碼圖像，可調整尺寸並導出，常用於血庫、物流與圖書館等場景的標籤打印測試。Codabar Barcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📄 代碼行數統計Code Line Counter 代碼行數統計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 條形碼Code128 Barcode 輸入任意 ASCII 文本，生成支持全字符集的 Code128 一維條形碼，自動選擇 128A/B/C 子集並校驗，可導出圖片，適合倉儲與物流條碼製作。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 條形碼Code39 Barcode 輸入字母、數字與少數符號，生成 Code39 一維條形碼（無需校驗位），可調節尺寸與導出，適合工業標識與資產標籤的條碼生成與掃描測試。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 表達式生成器Cron Expression Generator ⏰ Cron 表達式生成器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 與 Triple DES（3DES）在線加密解密工具，前端本地用密鑰對文本執行對稱加解密，支持多種模式與編碼輸出，數據不上傳，純前端。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. 📅 日期天數差Date Duration Calculator 日期天數差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 轉 docker-composeDocker Run to Compose Converter docker run 轉 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/鏡像/網絡/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 條形碼EAN Barcode 輸入 12–13 位數字，按 EAN-13 規範生成商品條形碼並計算校驗位，可導出圖片，用於零售商品碼、圖書 ISBN 條碼的預覽與打印前驗證。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 橢圓曲線簽名ECDSA Signature / Verify ECDSA 橢圓曲線數字簽名工具，支持生成密鑰對、對消息簽名與驗籤，基於 secp256k1 等曲線，純前端實現，適合理解數字簽名機制與接口簽名校驗。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 編輯器命令速查：C-x/M-x 前綴、移動、編輯、搜尋、窗口、緩衝區。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 規範化Email Normalization 清洗郵箱地址：去空格、轉小寫，並智能處理 Gmail 的點號與 + 標籤（Gmail 忽略點號與 + 後綴），避免重複註冊與格式錯誤。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 選擇器Emoji Picker Emoji 選擇器Emoji Picker - Search emojis by keyword (Chinese or English), filter and click to copy. Built-in dataset, free, browser-only. 📚 Emoji 含義查詢Emoji Meaning 按分類瀏覽 Emoji，查看名稱、Unicode 碼點和關鍵詞。點擊卡片複製 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 速查表收錄常用表情符號、含義、Unicode 碼點與分類，支持關鍵詞搜尋與一鍵複製，方便在社交媒體、文檔與代碼中快速選用合適表情。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 命令參考，包含命令、描述、參數和示例。點擊示例右上角按鈕可一鍵複製。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 字符串轉義Go String Escape 支持字符串與 rune 轉義，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、類型、函數、struct、接口、錯誤、goroutine、channel、context、模塊。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 壓縮器HTML Compressor 移除註釋、多餘空白與換行，保留 pre/textarea/script/style 內容。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 實體完整編解碼HTML Entities Encode 輸入文本，在命名實體、十進制與十六進制三種模式間編碼為 HTML 實體，或反向解碼還原，適合防 XSS 轉義、郵件模板與網頁內容安全處理。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 實體轉義HTML Escape HTML 實體轉義工具將 <、>、&、" 等特殊字符轉義為安全實體，防止 XSS 與渲染錯誤，支持反轉義，適合在網頁中安全嵌入用户輸入或代碼片段。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 實體速查HTML Entities 提供完整 HTML 實體速查表，點擊卡片即可複製實體名與對應字符，也可輸入文本自動轉換為實體編碼（保留普通 ASCII），便於網頁特殊符號書寫。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 嵌套檢查器HTML Nesting Checker 檢查 HTML 標籤嵌套是否合法：未閉合標籤、錯誤嵌套、隱式閉合，報告問題行號與修復建議。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 標籤速查HTML Label Quick Reference 一份完整的 HTML5 標籤速查表，按用途分類列出語義化、表單、媒體等標籤，點擊任意標籤即可展開查看屬性、取值與示例説明，適合前端開發快速查閲。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 轉 MarkdownHTML to Markdown HTML 轉 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實體編解碼HTML Entity Encoder 輸入文本，將 <、>、&、引號等特殊字符編碼為命名或數字 HTML 實體，或反向解碼，用於避免頁面解析錯誤與腳本注入，適合前端內容轉義處理。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 屬性（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 響應頭速查HTTP Response Headers 常用 HTTP 響應頭速查表，涵蓋 CORS、安全、緩存、內容等分類。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 擴展方法速查。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 狀態碼速查HTTP Status HTTP 狀態碼速查表彙總 1xx~5xx 全部標準狀態碼含義、適用場景與常見原因，支持關鍵詞搜尋，幫助開發者快速定位接口異常與排查網絡問題。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 緩存策略速查HTTP Cache Strategy Quick Reference HTTP 緩存控制速查：Cache-Control、ETag、Last-Modified 等指令詳解。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 請求頭速查HTTP Headers 常用 HTTP 請求頭速查表，包含語法、參數和示例。支持按分類篩選和關鍵詞搜尋。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 算法生成器將數字 ID 編碼為帶鹽值的短字符串，可逆且不暴露真實序號，支持自定義字母表與最小長度，適合對外暴露 URL 或資源 ID 時隱藏序號。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... 🔍 哈希算法識別Hash Identifier 哈希算法識別Hash Identifier - Guess the algorithm (MD5/SHA1/SHA256/SHA512/BCrypt) from a hash length, charset and known prefix. Free, browser-only. 🔐 Hill 密碼 (2x2 矩陣)Hill Password 輸入 2×2 密鑰矩陣與明文，按 C = K·P mod 26 做矩陣加密（或逆矩陣解密），演示多表代換與線性代數在古典密碼中的應用，需校驗矩陣模 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 配置解析與編輯：支持 [section]、key=value、註釋、行內空格。可雙向轉換 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 子網計算器IP Subnet Calculator IP 子網計算器支持 IPv4 地址與掩碼解析，自動劃分網絡位與主機位，輸出網絡地址、廣播地址、可用主機範圍與 CIDR，適合網絡規劃與子網劃分。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 範圍展開器IPv4 Range Expander IPv4 範圍展開器IPv4 Range Expander - Expand a CIDR into network, broadcast, usable host count and range. Free, browser-only. 🌐 IPv6 地址轉換器IPv6 Address Converter IPv6 地址轉換器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 條形碼（交叉 25）ITF Barcode 輸入 13–14 位數字，生成 ITF-14（交叉二五碼）一維條形碼，常用於紙箱與外箱物流包裝標識，可調整條形比例並導出供打印測試。ITF Barcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🖼️ 圖片轉 Base64Image to Base64 圖片轉 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 壓縮器JS Minifier JS 壓縮器JS Minifier - Remove comments and extra whitespace from JavaScript for a quick size reduction, without renaming variables. Free, browser-only. 📋 JSON / TSV 轉換器JSON TSV Converter JSON 與 TSV（Tab 分隔值）雙向轉換，支持格式化輸出、數據預覽、歷史記錄。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 深度對比JSON Diff Compare 逐行對比兩個 JSON 數據，高亮顯示新增、刪除、修改的字段，支持數組智能對比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 修復器JSON Repairer JSON 修復器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 根據 JSON 數據自動生成 JSON Schema，支持類型推斷、必填字段、數組項推斷、多版本輸出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 驗證器JSON Schema Check 使用 JSON Schema 校驗 JSON 數據，支持 Draft-07 常用關鍵字（type、required、properties、items、enum、數值範圍、字符串長度、正則、數組唯一性等…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 壓縮/格式化JSON Compress / Format 在線 JSON 壓縮與格式化工具，去除多餘空白壓縮體積或重新美化縮進，校驗語法並高亮結構，便於接口數據傳輸與審閲，純前端。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 / 壓縮JSON Format 在線 JSON 格式化工具，解析文本後按層級美化縮進或壓縮去空白，校驗語法錯誤並定位行列，支持高亮與摺疊，便於 API 調試，純前端。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 轉 CSVJSON to CSV 把 JSON 數組一鍵轉為 CSV 表格：自動提取所有字段為表頭，支持嵌套對象序列化、下載 .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 轉 TOMLJSON to TOML 將 JSON 轉換為 TOML 格式，支持頂級鍵值對、嵌套表、數組、數字、布爾和 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 轉 XMLJSON to XML 將 JSON 轉換為 XML，支持對象、數組、嵌套結構，可自定義根節點名。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 轉 YAMLJSON to YAML 將 JSON 轉換為 YAML 1.2 子集格式，支持嵌套對象、數組、字符串、數字、布爾和 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 轉代碼JSON to Code JSON 轉代碼工具將 JSON 示例一鍵轉換為 TypeScript、Go、C#、Java、Kotlin、Rust、Python、Proto 等多種語言的數據結構定義，支持只讀與導出，方便接口對接。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 查詢器JSONPath Query 使用 JSONPath 表達式從 JSON 數據中查詢和提取數據，支持遞歸查找、切片、過濾等高級語法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路徑提取器JSON Path Extractor 使用點號路徑（如 user.name）從 JSON 中提取字段，支持數組下標。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代碼混淆器Js Obfuscator &#128274; JS代碼混淆器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 粘貼 JWT 即解析表頭、載荷與簽名三部分並解碼聲明，校驗結構（不驗證密鑰），用於調試令牌與查看權限聲明，純前端。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 調試器JWT Debugger 解碼、驗證和調試JSON Web Token，支持解析Header/Payload/Signature，檢查過期時間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解碼器JWT Decoder 在瀏覽器端安全解碼 JWT 的 Header 與 Payload，無需上傳令牌。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 字符串轉義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：類型、集合、Stream、面向對象、泛型、異常、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 字符串轉義JavaScript String Escape 對字符串做 JS 轉義（處理引號、換行、反斜槓與 Unicode），也可反向還原，便於安全拼接到代碼，純前端即時轉換。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 代碼格式化：基於詞法分析規範化縮進、保留字符串與註釋、支持箭頭函數與解構。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 簡化器JavaScript Minify Device 移除 JavaScript 中的註釋與多餘空白、簡化布爾與數字字面量（保護字符串），基於詞法分析實現輕量級代碼壓縮。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 生成器生成按時間可排序的全局唯一 ID，含 32 位時間戳與隨機負載，適合分佈式系統中需要按生成時間排序的數據庫主鍵與日誌追蹤。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：查詢/部署/擴縮容/調試/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 符號與命令速查LaTeX Symbol & Command Cheat Sheet LaTeX 符號與命令速查LaTeX Symbol & Command Cheat Sheet - Search common LaTeX math symbols and commands, see the notation and click to copy. Free, browser-only. 🎨 Less 轉 CSS 編譯器Less Compiler 在線 Less 轉 CSS 編譯器，基於 less.js 將 Less 預處理代碼實時編譯為標準 CSS，支持變量、嵌套、混合與函數，便於前端開發調試，純前端。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... ↩️ ↩️ 換行符轉換器Line Ending Converter ↩️ 換行符轉換器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、進程、網絡、用户、磁盤、壓縮、包管理、服務、定時任務，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 是印刷和排版行業的標準佔位文本。自16世紀以來一直使用，讓設計者可以專注於版面而無需被內容干擾。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 地址廠商查詢MAC Lookup MAC 地址廠商查詢工具根據 OUI 前綴識別網卡製造廠商，支持格式化輸入與校驗，適合網絡運維排查設備來源、資產盤點與局域網管理。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 哈希計算器MD5 Encrypt #️⃣ MD5 哈希計算器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 類型速查MIME Type Lookup MIME 類型速查MIME Type Lookup - Map a file extension to its MIME type (e.g. json to application/json) or reverse. Free, browser-only. 📚 MIME 類型速查表MIME Type Quick Reference MIME 類型速查表彙總常見文件擴展名與 Content-Type 對應關係，支持按擴展名或類型雙向檢索，幫助開發者正確配置響應頭、上傳校驗與接口聯調。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 條形碼MSI Barcode MSI 條形碼在線生成器，輸入數字生成 MSI Plessey 碼圖，支持校驗位與尺寸調節，可下載 PNG/SVG，適合倉儲與零售標籤，純前端。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 查詢MSISDN Query MSISDN 查詢工具解析手機號碼的國際格式，提取國家碼、運營商與號碼結構，支持格式校驗，適合短信網關、國際通信與號碼歸一化處理。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 檢查器Markdown Linter Markdown 檢查器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 轉 HTMLMarkdown to HTML Markdown 轉 HTML 工具按 CommonMark 規範實時將 Markdown 解析為帶語義標籤的 HTML，支持標題、列表、表格、代碼塊等，適合寫博客、文檔與靜態站點生成。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編輯器MarkdownEditor 一個純前端的 Markdown 編輯器，輸入文本後即時渲染為預覽，支持標題、列表、代碼塊等常用語法，並能將草稿自動保存到本地，刷新頁面也不丟失。MarkdownEditor - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🏷️ Meta 標籤生成器Meta Tags Generator Meta 標籤生成器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，涵蓋 CRUD、聚合管道、操作符、索引與備份恢復，純前端查閲，方便開發者隨時參考。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、數據類型、約束、函數、JSON、備份、優化。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 按指定長度與字符集在前端生成 URL 友好的 NanoID 短標識符，可用於數據庫主鍵、短鏈或臨時令牌，全部隨機過程在瀏覽器本地完成，數據不上傳。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/負載均衡/HTTPS/緩存/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 數字縮寫Numeronym Numeronym 把單詞轉換為數字縮寫（首字母+中間字符數+尾字母）：internationalization → i18n、accessibility → a11y，批量轉換整段文本。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 元標籤生成器OG Meta Tag Generator 可視化生成 Open Graph + Twitter Card 全套 meta 標籤：標題/描述/圖片/URL/類型/站點名，一鍵複製 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 簡化版）OTP Generator ⏱️ OTP 生成器（HOTP/TOTP 簡化版）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 密鑰派生PBKDF2 Key Derivation PBKDF2 密鑰派生工具基於口令與鹽值多次哈希生成高強度密鑰，支持選擇哈希算法與迭代次數，適合為密碼存儲、加密與認證系統派生安全密鑰。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 簽名檢查PDF Signature Check 檢查 PDF 文件是否包含數字簽名：解析 PDF 內部的 ByteRange 與 Contents 引用，識別簽名存在性（不做密碼學驗證），純本地解析不上傳。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 字符串轉義PHP String Escape 支持單引號模式（僅轉義 \\ 和 \'）與雙引號模式（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：類型、數組、字符串、函數、類、trait、異常、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 碼生成器Pin Generator PIN 碼生成器可批量生成指定長度的數字口令，支持不重複模式與自定義位數，適合驗證碼、支付密碼與設備激活碼等場景，純前端隨機生成。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... 📞 電話號碼解析與格式化Phone Number Parser & Formatter 電話號碼解析與格式化Phone Number Parser & Formatter - Enter any phone number and get E.164 and grouped national/international formats by country. Free, browser-only. 📱 手機屏幕尺寸速查Phone Screen Sizes 手機屏幕尺寸速查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：將 plist 轉換為 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、數組、CTE、窗口函數、擴展。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... 🔢 質數檢測器Prime Number Checker 質數檢測器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 編解碼Punycode Encode/Decode 國際化域名 IDN 的編碼方案 (RFC 3492)，含 ACE 前綴 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 字符串轉義Python String Escape 支持 normal / raw 雙模式，\\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 代碼格式化：基於冒號塊規則規範化縮進、統一空格、摺疊多餘空行。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 語法速查，涵蓋類型、數據結構、函數、面向對象、異步與標準庫常用用法，純前端查閲，方便日常編碼參考。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 編解碼Quoted-Printable Encode/Decode RFC 2045，非 ASCII 字節用 =XX 轉義，行末用 = 表示軟換行。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 在線加密解密工具，前端本地用密鑰對文本執行對稱流加解密，支持十六進制與 Base64 輸出，數據不上傳伺服器，純前端。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 設計速查REST API Design Quick Reference REST API 設計規範：HTTP 動詞、URI 設計、狀態碼、查詢參數、錯誤格式。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. 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Part of the IT Development ... 🔍 常用正則表達式速查Regex Common 常用正則表達式速查Regex Common - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📝 富文本編輯器Rich Text Editor 富文本編輯器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... 🔢 羅馬數字轉換器Roman Numeral Converter 羅馬數字轉換器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：類型、字符串、數組、哈希、塊、Lambda、類、模塊、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 字符串轉義Rust String Escape 支持字符串 "..."、字符 '...'、字節字符串 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：所有權、借用、生命週期、類型、trait、錯誤、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 哈希計算器SHA Encrypt 支持 SHA-1 / SHA-256 / SHA-384 / SHA-512 安全哈希算法，使用瀏覽器內置 Web Crypto API 計算，本地處理不上傳。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 二維碼SMS QR Code SMS 短信二維碼在線生成器，輸入收件號碼與預置短信內容，生成可掃碼直接發送短信的二維碼，支持尺寸與容錯調節，純前端。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 字符串轉義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等多種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 語法速查SQL Grammar Quick Reference SQL 語法速查：SELECT/INSERT/UPDATE/DELETE/JOIN/子查詢/事務/窗口函數。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 在線執行SQLite Runner SQLite 在線執行工具基於 sql.js 在瀏覽器內存中運行完整 SQLite 引擎，支持編寫並執行多條 SQL、查看結果表，無需安裝與聯網，適合學習 SQL 與原型驗證。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 知識速查Ssl Info 純前端靜態工具，用於查詢 SSL/TLS 相關知識。瀏覽器無法直接讀取遠程證書，如需查看具體網站證書，請使用瀏覽器地址欄的鎖圖標或 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 佔位圖生成器SVG Placeholder Image Generator 在線生成 SVG 佔位圖：自定義寬高、文字、背景色與文字色，實時預覽，可複製 SVG 代碼或下載 .svg 文件，適合原型與文檔。SVG Placeholder Image Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. ... 🔓 SafeLink 解碼SafeLink Decoder SafeLink 解碼SafeLink Decoder - Reveal the real destination behind obfuscated or tracked URLs and strip tracking parameters safely before you click. Runs locally. 🔧 Shell 腳本格式化Shell Script Format ⌥ Shell 腳本格式化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 轉 JSON 轉換器TOML to JSON Converter TOML 轉 JSON 轉換器TOML to JSON Converter - Paste TOML text and convert it to formatted JSON, including [section] and [[array of tables]]. Free, browser-only. 🧩 TOML 轉 XML 轉換器TOML to XML Converter TOML 轉 XML 轉換器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 轉 YAML 轉換器TOML to YAML Converter TOML 轉 YAML 轉換器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/轉JSONTOML Format TOML配置文件格式化、驗證、與JSON互轉，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. 🔤 文本轉 ASCII 碼 / 二進制Text to ASCII Converter 文本轉 ASCII 碼 / 二進制Text to ASCII Converter - Show decimal, hex and 8-bit binary for each character. Free, instant, browser-only. 🔣 文本轉 Unicode 碼點Text to Unicode Codepoint 文本轉 Unicode 碼點Text to Unicode Codepoint - Show the U+ codepoint and UTF-16 escape for every character including CJK and emoji. Free, instant, browser-only. 🎲 TinyURL 模擬器TinyURL Simulator 本工具模擬 TinyURL 服務生成短碼（不會創建真實可訪問的鏈接，僅供演示）。TinyURL Simulator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📐 三角形計算器Triangle Calculator 三角形計算器Triangle Calculator - Compute perimeter, area (Heron) and angles from three sides, with type detection. Free, browser-only. 📘 TypeScript 轉 JavaScript 編譯器TypeScript Compiler 基於官方 TypeScript 5.3 編譯器，將 TypeScript 代碼實時編譯為 JavaScript。支持選擇目標版本、模塊系統，並顯示編譯診斷信息。所有編譯在瀏覽器本地完成，代碼不會上傳。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：類型、接口、泛型、工具類型、類、裝飾器、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 位唯一標識符，含時間戳與隨機部分，比 UUID 更適合按時間排序的數據庫主鍵與日誌追蹤。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 條形碼UPC Barcode 輸入 11–12 位數字，按 UPC-A 規範生成北美商品條形碼並自動計算校驗位，可導出圖片，適合跨境電商或零售商品上架前的條碼預覽。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 參數解析器URL Parameter Parser URL 參數解析器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 生成器將文章標題或任意文本轉為小寫連字符分隔的 URL 片段，去除特殊字符與空格，支持中英文處理，適合博客、電商與 CMS 的永久鏈接生成。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 二維碼URL QR Code 將網址生成為可掃描的二維碼圖片，可調尺寸與容錯，便於分享鏈接，純前端生成不上傳任何數據。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 對 URL 或參數做百分號編解碼，處理中文與特殊字符，用於接口調試與鏈接拼接，純前端處理文本不上傳伺服器。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 高級編解碼URL Advanced Encode/Decode 支持 URI / Component / Form / Query 多種模式。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 輸入一個 URL 即自動拆解出協議、域名、路徑、錨點與查詢參數，參數以可視化列表呈現並支持編輯增刪，最後一鍵重新拼裝為標準 URL，便於調試鏈接。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）的傳輸速率、接口形態與供電能力對照速查，幫助快速比較不同 USB 標準的性能差異。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 生成器基於隨機數生成 128 位唯一標識，符合 RFC 4122 標準，純前端隨機生成，適合作為數據庫主鍵、會話標識與資源 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 命名空間）UUID v5 Generator UUID v5 生成器基於命名空間與 SHA-1 對名稱派生確定性的 UUID，相同輸入始終得到相同輸出，適合需要穩定、可復現的資源標識與去重。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，時間戳排序的 UUID，前 48 位為毫秒級 Unix 時間。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 生成器在線批量生成符合 RFC 4122 的全局唯一標識符，支持版本展示與複製，適合數據庫主鍵、追蹤 ID 與分佈式系統去重。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 編碼 / 解碼UUencode Encode/Decode Unix-to-Unix 編碼，每 3 字節 → 4 字符，字符空間 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 字符查詢Unicode Query Unicode 字符查詢工具按碼點或字符檢索 Unicode 信息，展示名稱、類別、UTF-8/UTF-16 編碼與所屬區塊，支持複製，適合處理特殊字符與編碼排障。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 解析器拆解瀏覽器 UA 字符串，識別瀏覽器、引擎、作業系統與設備類型，提供示例一鍵載入，適合後端日誌分析、爬蟲識別與兼容性判斷。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... 🎬 視頻碼率計算器Video Bitrate Calculator 視頻碼率計算器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 編輯器命令速查，包括模式切換、移動、編輯、搜尋替換、窗口管理與寄存器操作，純前端運行，便於隨時查閲。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 配網二維碼生成器WiFi QR Code Generator WiFi 配網二維碼生成器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 二維碼WiFi QR Code WiFi 二維碼工具將 SSID、加密方式與密碼編碼為可掃描二維碼，手機掃碼即可免輸密碼聯網，支持 WPA/WEP/無加密，適合訪客網絡分享與活動物料。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 校驗器XML Validator XML 校驗器XML Validator - Check XML for well-formedness: tag pairing, quoted attributes and illegal characters, with error location. Free, browser-only. 🧩 XML 轉 TOML 轉換器XML to TOML Converter XML 轉 TOML 轉換器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 轉 YAML 轉換器XML to YAML Converter XML 轉 YAML 轉換器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 格式化與壓縮，支持屬性、CDATA、註釋、命名空間。可自定義縮進。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 轉 JSONXML to JSON 將 XML 轉換為 JSON，元素為對象、屬性加 @ 前綴、文本內容為 #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 用指定的密鑰對文本做按位異或（XOR）處理，密鑰逐字節循環複用，同一操作既可加密也可解密，適合理解對稱流加密原理或進行簡單字符串混淆。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 在線加密解密工具，前端本地用密鑰對文本執行分組對稱加解密，較 TEA 更安全，支持編碼輸出，數據不上傳，純前端。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 編碼 / 解碼XXencode Encode/Decode 類似 UUencode，但使用 +-/0-9A-Za-z 字符集，可避免特殊字符問題。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 轉 JSON 轉換器YAML to JSON Converter YAML 轉 JSON 轉換器YAML to JSON Converter - Paste YAML text and convert it to formatted JSON with nested maps and lists. Free, browser-only. 🔧 YAML 轉 TOML 轉換器YAML to TOML Converter YAML 轉 TOML 轉換器YAML to TOML Converter - Paste YAML text and convert it to TOML with nested tables, arrays and common scalars. Free, browser-only. 🧩 YAML 轉 XML 轉換器YAML to XML Converter YAML 轉 XML 轉換器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/驗證/轉JSONYAML Format 在線YAML格式化工具，支持語法驗證、美化壓縮、YAML與JSON互相轉換，純前端本地處理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 語法驗證器YAML Grammar Verifier 在線校驗 YAML 語法、定位錯誤行列、統計文檔結構，並一鍵轉換為格式化 JSON，支持多文檔（--- 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 終端複用器的命令速查表，彙總會話、窗口、窗格切換、複製模式與常用配置快捷鍵，按場景分組排列，方便在終端操作中快速檢索記憶。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... 🎲 二維碼生成器Qrcode 二維碼生成器將文本、網址、名片等信息即時編碼為可掃描的 QR 碼，支持自定義尺寸與容錯等級，純前端生成，適合分享鏈接、WiFi 與活動物料。Qrcode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎨 二維碼美化生成器QR Code Beautify Generator 生成個性化彩色二維碼：自定義前景/背景色、容錯級別與模塊圓角樣式，實時預覽並下載 PNG，適合名片、海報與品牌物料。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. 🎲 二維碼解碼（手動輸入解析）QR Code Decode 本工具用於解析已知二維碼文本內容的格式與含義（不支持從圖片識別）。粘貼掃描得到的內容即可自動識別類型。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... 🔐 二進制字符串編解碼Binary Encode 將輸入文本按 UTF-8 編碼為每個字符 8 位二進制串，或將二進制字符串還原為原文，支持查看字節流，適合理解字符編碼與做二進制數據轉換練習。Binary Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 二進制轉文本Binary to Text 輸入以空格、短橫線或點等分隔的二進制串，按每 8 位解析為一個 UTF-8 字節並還原為文本，自動忽略分隔符，便於從網絡抓包或編碼作業裏快速還原內容。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... ✅ 二項分佈計算器Binomial Distribution 二項分佈在線計算器，輸入試驗次數 n、成功概率 p 與成功次數 k，計算恰好 k 次及累積概率，用於質量與統計推斷，純前端運行。Binomial Distribution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎨 代碼語法高亮Code Syntax Highlighting &#127912; 代碼語法高亮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. 🔢 任意進制轉換器Integer Base Converter 支持 2-36 進制任意互轉與超大整數（BigInt）：輸入數字與源進制，實時得到目標進制結果，附二進制/八進制/十進制/十六進制一覽。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... 🔐 仿射密碼 (Affine Cipher)Affine Cipher 輸入密鑰 a、b（a 需與 26 互素），按 C = (a·P + b) mod 26 加密、反函數解密英文字母，並校驗密鑰可逆性，適合學習模運算與單表代換密碼。Affine Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 優惠券碼生成器Coupon Code Generator 優惠券碼在線生成器，批量生成促銷碼或折扣碼，支持前綴、分組與字符集，用於營銷活動測試，數據本地生成不上傳，純前端。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... 🎲 位置二維碼Location QR 位置二維碼在線生成器，輸入經緯度或地址生成地理座標二維碼，掃碼可在地圖打開位置，支持尺寸與容錯調節，純前端運行。Location QR - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 位運算計算器Bitwise Calculator 32 位位運算計算器：AND/OR/XOR/NOT/左移/右移，支持十進制/十六進制/二進制輸入，實時可視化位翻轉。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... 🎲 假數據生成器Fake Data 假數據在線生成器，批量生成姓名、地址、郵箱、電話等模擬數據，可設字段與數量，用於開發測試與演示填充，數據本地生成不上傳。Fake Data - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 八進制字符串編解碼Octal Encode 把輸入的文本或字節流按每字節轉換為 3 位八進制數（000–377），也可反向將八進制串還原為原始字符串，常用於底層編碼調試與文件格式查看。Octal Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📈 關鍵詞密度分析器Keyword Density Analyzer 輸入文本，分析各關鍵詞出現頻率、密度佔比與詞彙豐富度，支持中英文混合分析，適用於 SEO 優化與內容質量檢查。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. 🏷️ 關鍵詞提取Keyword Extract &#127991;&#65039; 關鍵詞提取Keyword Extract - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 凱撒密碼Caesar Cipher 輸入明文（或密文）與移位密鑰 k，按凱撒密碼 C=(P+k) mod 26 進行加密或解密，演示經典移位密碼的工作原理。Caesar Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📋 列表轉換器List Converter 把逐行列表一鍵轉為各種格式：逗號分隔、JSON 數組、SQL IN 子句、HTML 列表、引號包裹、豎線分隔、CSV，開發數據處理必備。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... 📻 北約音標字母轉換NATO Phonetic Alphabet Convert 把文本轉換為北約音標字母（Alpha/Bravo/Charlie...），支持正反雙向轉換：字母→音標詞、音標詞→字母，適合無線電通話、電話報號。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... 📚 區域設置查詢（Locale）Locale Lookup 區域設置 Locale 查詢工具解析語言與地區組合代碼（如 zh-CN），展示語言、書寫腳本與地區信息，幫助國際化開發中正確配置本地化參數與格式化規則。Locale Lookup - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 十六進制編解碼Hex Encode 在文本與十六進制之間編解碼，支持分隔與大小寫，用於調試字節流與數據查看，純前端處理文本不上傳。Hex Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 十六進制轉文本Hex to Text 輸入十六進制串（自動忽略 0x 前綴、空白與常見分隔符），每 2 位解析為一個字節並還原為 UTF-8 文本，適合從內存轉儲、網絡報文中還原可讀字符串。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... 🔐 十進制 ASCII 碼編解碼Decimal Encode 將輸入文本的每個字節轉換為 0–255 的十進制數字（或反向解碼），便於在協議調試、教學演示中直觀查看字符的十進制編碼表示。Decimal Encode - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 單樣本 Z 檢驗Hypothesis Test 單樣本 Z 檢驗計算器用於檢驗樣本均值與已知總體均值是否存在顯著差異，輸入樣本數據、總體標準差與顯著性水平，輸出 Z 值與 p 值，適合假設檢驗入門。Hypothesis Test - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 向量叉積Vector Cross Product 輸入兩個三維向量 A 與 B 的分量，計算它們的叉積 A×B，結果向量同時垂直於 A 和 B，常用於幾何與物理計算。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. 🔧 向量模長Vector Magnitude 向量模長在線計算器，輸入向量各分量求歐幾里得長度，支持高維向量，用於幾何與物理運算，實時顯示結果，純前端運行。Vector Magnitude - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔧 向量點積Vector Dot Product 向量點積在線計算器，輸入兩個等長向量的分量，求數量積與夾角餘弦，用於幾何與機器學習特徵運算，實時顯示結果，純前端。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 在瀏覽器端計算 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. #️⃣ 哈希計算器Hash Calculator 在線哈希計算器，對文本或文件計算 MD5、SHA-1、SHA-256 等多種摘要，支持文件拖拽與編碼選擇，用於校驗完整性，數據本地計算不上傳。Hash Calculator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🎲 團隊名生成器Team Name Generator 團隊名在線生成器，組合行業詞、意象詞與後綴生成獨特團隊或項目名稱，可設風格與長度，一鍵複製，適合創業與活動，純前端。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 ... 📚 國家代碼與旗幟Country Flag 國家代碼與旗幟在線查詢工具，按國家名或 ISO 代碼檢索國旗 emoji、國際區號與頂級域，適合國際化開發參考，純前端運行。Country Flag - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📚 國家代碼查詢Country Code Lookup 國家代碼在線查詢工具，按國家名或 ISO 代碼檢索國際電話區號、國旗與頂級域，方便國際通訊與開發參考，純前端運行。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. ▶️ 在線代碼運行器Code Runner &#9654;&#65039; 在線代碼運行器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 ... 🧮 均勻分佈計算器Uniform Distribution 均勻分佈在線計算器，輸入區間上下限求概率密度、累積概率與分位數，用於隨機模擬與統計教學，純前端運行。Uniform Distribution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 埃特巴什碼 (Atbash Cipher)Atbash Cipher A ↔ Z, B ↔ Y, C ↔ X ... 第一個字母對應最後一個字母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 域名在線生成器，組合關鍵詞、行業詞與後綴建議可用域名創意，適合建站選名與品牌構思，純前端運行。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 ... 🔐 培根密碼 (Bacon Cipher)Bacon Cipher 每個字母編碼為 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. 🔐 多格式字符編碼器Char Encoder 同時顯示 ASCII / Unicode / HTML / URL / Base64 / Hex / Binary / Octal 等多種格式。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 一鍵計算多種哈希：MD5 / SHA-1 / SHA-256 / SHA-512 / CRC32，支持多算法同時輸出與大小寫切換。SHA 走瀏覽器原生 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. 🔤 大小寫轉換器Case Converter - &# 128296 ; Case Converter &#128296; 大小寫轉換器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 把文本轉為難以閲讀的形式：Unicode 全角、倒序、ROT13、Base64、十六進制轉義、HTML 實體，一鍵複製，常用於代碼/腳本混淆。String Obfuscation Obfuscator - obfuscate and minify online, free. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of th... 📝 字符串長度統計String Length Counter 粘貼文本後統計字符數、UTF-8 字節數、行數、詞數、空格數與中文字符數，並按編碼顯示佔用，適合文案字數核對、數據庫字段長度評估與 SEO 字數校驗。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 ... 🛡️ 密碼強度檢測Password Strength Detect 本地檢測密碼強度，估算暴力破解時間，所有計算在瀏覽器完成，密碼不上傳。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. 🔐 密碼生成器（IT）Password Generator ( IT ) 在線生成高強度隨機密碼與密碼短語，所有計算在瀏覽器本地完成，密碼不會上傳伺服器。Create strong random passwords with length and character sets. Crypto-secure randomness, excludes ambiguous chars, shows entropy in bits—free, browser-only. 🎲 序列號生成器Serial Key Generator 序列號在線生成器，按格式批量生成產品密鑰或授權碼，支持分段、前綴與字符集，用於測試與演示，數據本地生成不上傳，純前端。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... 🎲 恢復碼生成器Recovery Code Generator 賬户恢復碼在線生成器，批量生成隨機恢復碼用於兩步驗證備用，可設長度與數量並下載，數據本地生成不上傳，純前端。Recovery Code Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of ... 🎲 打字速度測試Typing Test 打字速度測試工具通過隨機或自定義文本測量打字速度與準確率，實時統計 WPM 與錯誤數，適合練習盲打、評估輸入效率與趣味比拼。Typing Test - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 指數分佈計算器Exponent Distribution Calculator 指數分佈計算器用於求取事件發生間隔的概率與分位數，輸入速率參數 λ 與取值 x，輸出概率密度與累積概率，適合可靠性分析與排隊論建模。Exponent Distribution Calculator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Developme... ⌨️ 按鍵碼 Keycode 查詢Key Code Keycode Query ⌨️ 按鍵碼 Keycode 查詢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. 📹 攝像頭錄製Camera Recording 在線攝像頭錄製工具，瀏覽器內調用設備攝像頭實時錄製視頻並下載 WebM，支持分辨率選擇，數據本地處理不上傳，純前端。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... 🔐 摩斯電碼增強版Morse Code Enhanced 將文本或摩斯電碼雙向轉換，覆蓋全部英文字母、數字、標點符號以及 Prosigns 特殊信號，可逐字符高亮對照，適合無線電愛好者與電報學習演練。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 ... 🔐 摩斯電碼轉換Morse Code Convert 摩斯電碼轉換工具支持文本與摩斯碼雙向互轉，含點劃規則説明與字符表，點擊字符可自動填入，適合無線電愛好者學習、應急通信練習與編碼趣味演示。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. 🧮 數學表達式求值器Math Expression Evaluate Device - Online Calculate Math Expression : Support + - * / % ^ ( 在線計算數學表達式：支持 + - * / % ^ ( ) 與 sin/cos/tan/sqrt/abs/ln/log/floor/ceil/round/min/max 等函數，自動保存最近 20 條歷…Math Expression Evaluate Device - Online Calculate Math Expression : Support + - * / % ^ ( - free online tool. 💾 文件大小單位換算File Size Unit Converter 輸入字節數或帶單位的大小，在十進制（SI，1 KB=1000 B）與二進制（IEC，1 KiB=1024 B）單位間快速換算，顯示 B/KB/MB/GB 等多種表示，便於存儲與帶寬估算。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 / 二進制轉換Text to Binary 支持文本與二進制的雙向轉換，可處理 ASCII/Unicode 字符、自定義分隔符並批量轉換，便於編碼學習與數據調試。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 / 八進制轉換Text to Octal 支持文本與八進制的雙向轉換，可處理 ASCII/Unicode 字符、自定義分隔符並批量轉換，便於查看字符的八進制編碼。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 / 十六進制轉換Text to Hex #️⃣ 文本 / 十六進制轉換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 / 十進制 ASCII 碼轉換Text to Decimal 支持文本與十進制的雙向轉換，可處理 ASCII/Unicode 字符、自定義分隔符並批量轉換，便於查看字符的十進制編碼。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... 🎲 文本二維碼Text QR Code 文本二維碼在線生成器，輸入任意文字生成可掃碼二維碼，支持尺寸、容錯與配色調節，一鍵下載 PNG/SVG，適合分享短信息，純前端。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 對文本行進行去重、排序、反轉等處理，支持多種分隔符與組合操作，全部在瀏覽器本地完成。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. 📊 文本對比工具Text Compare 在線文本對比工具，逐行或字符級高亮兩段文本差異，快速定位增刪改，適合代碼評審與文檔校訂，純前端運行。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. ✂️ 文本截斷工具Text Truncate 在線文本截斷工具，按指定長度或行數截斷文本並添加省略號，支持中英文與按詞邊界截斷，適合摘要生成與展示截斷，純前端。Text Truncate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔄 文本替換工具Text Replace 在原文中執行文本替換，既支持普通字符串替換，也支持正則表達式替換，實時標出所有匹配位置並預覽替換結果，方便在批量修改前確認改動範圍。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 把待處理文本粘貼進來，勾選去除空行、多餘空格、不可見字符或統一換行等選項，一鍵批量清理，結果可直接複製，適合整理從網頁複製來的雜亂文字。Text Cleaner - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📊 文本相似度計算器Text Similarity &#128202; 文本相似度計算器Text Similarity - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 📊 文本統計分析Text Statistics Analysis 文本統計分析工具統計中英文混合文本的字數、詞頻、字符數與預計閲讀時間，支持實時計數，適合寫作字數統計、內容運營與文案長度把控。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. 🕵️ 文本隱寫工具Text Steganography 將秘密信息隱藏在看似普通的文本中，支持零寬字符、藏頭詩、空格編碼等多種隱寫技術Text Steganography - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. ⏱️ 時間戳轉換器Timestamp Convert 時間戳轉換器支持 Unix 秒/毫秒時間戳與日期時間互轉，支持本地與 UTC 時區顯示，適合日誌排查、接口調試與跨時區時間換算。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... 🕒 時間格式轉換Time Format Convert 時間格式轉換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... 🎲 暱稱生成器Nickname Generator 在線暱稱生成器，組合形容詞、名詞與數字生成個性化網名，可設風格與長度，一鍵複製，適合社交與遊戲賬號，純前端運行。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... 🔐 普萊費爾密碼 (Playfair Cipher)Playfair Cipher Playfair 密碼工具實現雙字母替換加密，基於 5×5 密鑰矩陣對明文成對加密，支持自定義關鍵詞，適合瞭解古典密碼學原理與教學演示。Playfair Cipher - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 柵欄密碼 (Rail Fence)Rail Fence Cipher 實現柵欄密碼（Rail Fence）的加解密：按設定的欄數把明文沿鋸齒形（zigzag）路徑寫入，再按行讀出得到密文，反向操作即可還原，用於古典密碼演示。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. 🔧 標準差計算器Standard Deviation Calculator 標準差在線計算器，輸入數據集自動計算樣本或總體標準差與方差，衡量數據離散程度，支持批量粘貼，適合統計教學，純前端。Standard Deviation Calculator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development ... 📐 正則表達式可視化Regex Visualization 粘貼一段正則表達式，工具在前端將其語法結構解析為彩色的樹狀可視化圖，直觀展示分組、量詞與字符類層級，幫助開發者理解複雜正則的匹配邏輯。Regex Visualization - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 正則表達式字符轉義Regex Expression Character Escape 轉義正則元字符 \ ^ $ * + ? . ( ) | { } [ ]。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... 🔍 正則表達式測試器Regex Expression Test 粘貼測試文本並輸入正則表達式，實時高亮所有匹配片段，支持查找替換與分組捕獲展示，可逐條查看每個捕獲組的取值，便於調試正則邏輯。Test and debug regex with live matching, group highlighting and find-replace. Supports case-insensitive, multiline and global flags—client-side, no upload. 📚 正則表達式速查Regex Expression Quick Reference 正則表達式語法速查：元字符、量詞、斷言、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... 🧮 正態分佈計算器Normal Distribution 正態分佈在線計算器，輸入均值、標準差與區間，計算概率密度、累積概率與分位數，用於統計推斷與質量分析，純前端運行。Normal Distribution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🧮 泊松分佈計算器Poisson Distribution 泊松分佈在線計算器，輸入單位時間平均發生次數 λ 與次數 k，計算恰好 k 次及累積概率，用於稀有事件建模，純前端運行。Poisson Distribution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the IT Development tools. 🔐 波利比奧斯方陣密碼 (Polybius)Polybius Square Password 基於 5×5 方陣（I/J 共用一格）的古典密碼工具，將明文每個字母替換為對應的行號與列號數字，也可反向把數字對還原為字母，適合密碼學入門練習。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. 🎲 遊戲標籤生成器Game Label Generator 遊戲標籤（Gamertag）在線生成器，組合風格詞、數字與符號生成獨特玩家名，可設長度與主題，一鍵複製，適合遊戲賬號註冊，純前端。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... ⚙️ 環境變量生成器Env Generator 快速生成 .env、Docker Compose、JSON、YAML、Shell 等格式的環境變量配置文件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... 💻 環境變量生成器（.env格式）Generator 16 按鍵值對生成 .env 格式文本，支持批量與註釋，便於項目配置管理與示例，純前端生成可複製不存儲。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 用户名在線生成器，組合詞根、數字與符號生成可用賬號名，可設長度與風格，一鍵複製，適合註冊與測試賬號，純前端運行。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... 🎲 番茄鍾計時器Pomodoro Timer Timer Device 在線番茄鍾計時器，按 25 分鐘專注+5 分鐘休息循環管理時間，可自定義時長與輪次，本地記錄專注統計，適合高效工作法，純前端。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... 🧮 矩陣乘法Matrix Multiplier 輸入兩個矩陣 A 和 B 的各元素數值，工具按 C = A × B 規則計算乘積矩陣（要求 A 的列數等於 B 的行數），常用於線性代數與圖形變換的運算驗證。Matrix Multiplier - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. 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Part of the IT... 🎲 高級 Slug 生成器Advanced Slug Generator 高級 Slug 生成器將標題、中文或混合文本轉換為 URL 友好字符串，支持自定義分隔符、大小寫、停用詞與多語言拼音轉寫，適合生成 SEO 友好的鏈接。Advanced Slug Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of ...