Free browser-based utilities for developers — encoders, formatters, generators, and testers. No sign-up, no data leaves your device.
Encode and decode HTML entities in seconds
Convert XML data to clean JSON format in one click
Build cron job schedules visually with instant preview
Encode text or decode Base64 strings instantly
Encode or decode URL strings to percent-encoding
Format, validate, and minify JSON instantly
Decode and inspect JSON Web Tokens without a secret
Generate UUID v4 values, one or in bulk
Minify or beautify CSS code instantly
Test regular expressions with live match highlighting
Preview Markdown formatting in real time
Format and indent messy HTML code
Convert colors between HEX, RGB, and HSL