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!