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 tools

Built 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!