Developer Tools
Essential tools for developers — format, validate, convert code
Use these free developer tools online — no signup, instant in your browser.
Base64 Encoder/Decoder
Encode and decode Base64 strings
Color Picker
Pick colors and get HEX, RGB, HSL values
CSS Minifier
Minify CSS to reduce file size
CSV to JSON Converter
Convert CSV data to JSON format
HEX to RGB Converter
Convert HEX colors to RGB and HSL
HTML Entities Encoder
Encode and decode HTML entities
HTML Formatter
Format and prettify HTML code
JS Minifier
Minify JavaScript to reduce file size
JSON Formatter
Format and prettify JSON with syntax highlighting
JSON to CSV Converter
Convert JSON arrays to CSV format
JSON Validator
Validate JSON and show errors
JWT Decoder
Decode JWT tokens and inspect claims
Number Base Converter
Convert between decimal, binary, hex, octal
PX to REM Converter
Convert pixel values to REM units
Regex Tester
Test regular expressions against text
RGB to HEX Converter
Convert RGB colors to HEX
SQL Formatter
Format and prettify SQL queries
URL Parser
Parse URL components: protocol, host, path, params
UUID Generator
Generate random UUID v4 identifiers