Developer Tools
20+ free online tools for developers. Format JSON, encode/decode data, generate hashes, test regex, and more. All tools run in your browser.
JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting.
Base64 Encode/Decode
Encode text to Base64 or decode Base64 to text.
URL Encoder/Decoder
Encode or decode URL special characters.
HTML Entities
Encode or decode HTML entities and special characters.
JWT Decoder
Decode and inspect JSON Web Tokens.
Regex Tester
Test and debug regular expressions with live matching.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes.
UUID Generator
Generate random UUIDs (v4) in bulk.
CSS Minifier
Minify or beautify CSS code.
JavaScript Minifier
Minify or beautify JavaScript code.
HTML Minifier
Minify or beautify HTML code.
SQL Formatter
Format and beautify SQL queries.
XML Formatter
Format, beautify, and validate XML.
Cron Generator
Build cron expressions visually with human-readable output.
Epoch Converter
Convert Unix timestamps to human dates and vice versa.
Color Converter
Convert colors between HEX, RGB, HSL, CMYK formats.
Diff Checker
Compare two texts and see differences highlighted.
Markdown Preview
Write and preview Markdown in real-time.
HTTP Status Codes
Complete reference for all HTTP status codes.