DevTools
Free online developer utilities. Fast, secure, and 100% client-side — your data never leaves the browser.
JSON Formatter & Validator
Format, validate and beautify JSON code with custom indentation and sorting options
JSON to XML
Convert JSON data to XML format with customizable root element
XML to JSON
Convert XML data to JSON format with various formatting options
XML Formatter & Beautifier
Format, beautify and minify XML with custom indentation and real-time validation
Code Diff
Compare two pieces of code with split or unified view
Base64 Encoder & Decoder
Encode and decode text or data to/from Base64 format
URL Encoder/Decoder
Encode and decode URLs and query strings for web development
JWT Decoder & Inspector
Decode and inspect JSON Web Tokens with expiration info
Regex Tester & Debugger
Test and debug regular expressions with real-time feedback and common patterns library
UUID, ULID & NanoID Generator
Generate UUIDs, ULIDs, and NanoIDs for development and testing with bulk generation options
HTTP API Tester
Test HTTP requests with a full-featured API client, history, and cURL export
Hash Generator & Crypto Tools
Generate MD5, SHA-1, SHA-256, SHA-512 hashes and HMAC signatures for files and text
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa
Timezone Converter
Convert time between different timezones with multi-timezone display, meeting planner, and business hours visualization
QR Code Generator
Generate customizable QR codes for text, URLs, WiFi, contacts, and more with custom colors and logos
Color Palette & Contrast Checker
Generate color palettes, check WCAG contrast ratios, and convert between HEX, RGB, HSL formats
IP Address Calculator
Calculate network address, broadcast address, IP range, and usable hosts for any IPv4 address with CIDR notation
Icon Explorer
Browse and search Font Awesome v7 (2000+ icons) and Lucide v1.7.0 (1694 icons) with lazy loading and instant preview