Developer Tools, Instantly
Free, fast, client-side developer utilities. No sign-up, no tracking, no data leaves your browser.
JSON Formatter
Format, minify, and validate JSON data
Base64 Encode/Decode
Encode and decode Base64 strings
URL Encode/Decode
Encode and decode URL components
JWT Decoder
Decode and inspect JSON Web Tokens
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes
Regex Tester
Test regular expressions with real-time matching
Timestamp Converter
Convert Unix timestamps to dates and back
Color Converter
Convert between HEX, RGB, and HSL color formats
UUID Generator
Generate random UUIDs (v4) in bulk
Lorem Ipsum Generator
Generate placeholder text for designs and layouts
Markdown Preview
Write markdown and see a live rendered preview
Text Diff Checker
Compare two texts and see line-by-line differences
Cron Expression Parser
Parse cron expressions with descriptions and next run times
Password Generator
Generate strong, cryptographically random passwords
QR Code Generator
Generate QR codes from text or URLs with custom sizes
YAML ↔ JSON Converter
Convert between YAML and JSON formats instantly
CSS Gradient Generator
Create beautiful CSS gradients with a visual editor
HTML Entity Encoder
Encode and decode HTML entities and special characters
JSON to TypeScript
Convert JSON objects to TypeScript interfaces instantly
Built for AI Agents & Automation
Every tool available as a REST API. Generate a free API key and integrate into your agent workflows, CI/CD pipelines, or automation systems.