Dev Tools

Dev Tools is the ultimate Swiss Army knife for developers. With 168+ utilities, format, encode, decode, convert, generate, and inspect data — 100% offline with zero server dependency.**NEW: REST API Client** — Test APIs on the go with full HTTP method support, request history, collections, Postman & OpenAPI import, environment variables, and offline caching.Whether you're testing endpoints, generating test data, formatting SQL, inspecting barcodes, or designing CSS — Dev Tools has you covered.🚀 REST API CLIENT (NEW!)• Full HTTP method support (GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS)• Request history & collections management• Postman collection import (v2.1.0 format)• OpenAPI/Swagger import (3.0+ & 2.0 formats)• Environment variables with {{variable}} substitution• Response caching for offline operation• OAuth2 authentication support• Payload validation & error handling🔧 FORMATTERS & MINIFIERS• JSON Formatter / Minifier / Validator / Diff• XML Formatter / Minifier / Validator• SQL Formatter / Minifier• HTML Beautifier / Minifier• CSS Beautifier / Minifier / SCSS→CSS• JavaScript Beautifier / Minifier• JSON Path Extractor🔐 ENCODERS & DECODERS• Base64 Encoder / Decoder• URL Encoder / Decoder• HTML Entity Encoder / Decoder• String Escape / Unescape• GZip Compress / Decompress• Hex ↔ Text, Binary ↔ Text• Unicode Escape, Morse Code• XOR Cipher• JWT Decoder + Builder🔄 CONVERTERS• Number Base (binary, octal, decimal, hex)• JSON ↔ YAML, JSON ↔ CSV, JSON ↔ XML• JSON → Dart, TypeScript, Go, Kotlin, Python, C#• Timestamp, Date Formatter, Date Difference• Timezone Converter, Unix Time Now• Unit Converter, Live Currency Converter• Byte / Data Size, CSS Unit Converter• Cron Parser + Generator• URL Parser, Chmod Calculator• ASCII Table, MIME Type Lookup• CSV → Markdown, JSON Table Viewer⚡ GENERATORS• Hash (MD5, SHA-1/256/512) + HMAC• UUID, NanoID, ULID• Password + Passphrase + Strength Checker• Username Generator• Lorem Ipsum, Random Data, Random Number• Random String, MAC Address• QR Code (generate + scan), Barcode Generator• Regex Generator📝 TEXT TOOLS• Text Case Converter (camelCase, snake_case, PascalCase…)• Regex Tester, Text Diff, Text Analyzer• Text Statistics (words, lines, read/speak time), Find & Replace• List Compare, Number to Words• Slug Generator, Markdown Preview, Markdown ↔ HTML• Whitespace Remover, Text Trimmer, Text Reverse🎨 GRAPHIC & CSS TOOLS• Color Converter (HEX/RGB/HSL), Color Picker• Color Palette Generator, Contrast Checker• Gradient Generator, Box Shadow Generator• Border Radius Generator, Box Model Debugger• Grid Overlay Debugger, Typography Scale Generator• SVG Viewer + Optimizer• Image Converter, Resizer, Compressor, Cropper• Image ↔ Base64, Pixel/Unit Converter🌐 NETWORK & SYSTEM• IP Subnet Calculator, IP Validator• HTTP Status Codes, HTTP Headers Parser• User Agent Parser• Query String Parser + Builder🔢 MATH & NUMBERS• Scientific Calculator, Bitwise Calculator• Percentage, Prime Checker, Factorial• Fibonacci Generator, GCD, LCM✅ KEY FEATURES• 168+ tools, 100% offline capability• REST API Client with Postman & OpenAPI import• One-tap copy for all tool outputs• Material 3 design with 10 color themes• True Black (AMOLED) dark mode• Favorites & Recent tools home dashboard• Adjustable font size (80%–140%)• Fast global search across all toolsBuilt with Flutter for a fast, responsive experience. Perfect for developers, designers, DevOps engineers, QA testers, and coders daily.Have a tool request? Leave a review — we update regularly!