tools / developer
Developer Tools
Utilities for formatting, encoding, converting, and debugging. Everything runs in your browser — no login required.
Format and validate JSON, encode and decode Base64, generate UUIDs, test regex patterns, decode JWTs, generate hashes, parse cron expressions, format SQL, convert timestamps, encode URLs, parse user agents, convert number bases, minify CSS and JS, and more.
jsonb64uuidtsurlhashrxclrjwthtmlmdbasesqlhtml+cssjscronuadiffgen
JSON Formatter
Base64 Encoder / Decoder
UUID Generator
Timestamp Converter
URL Encoder / Decoder
Hash Generator
Regex Tester
Color Converter
JWT Decoder
HTML Entity Encoder
Markdown Previewer
Number Base Converter
SQL Formatter
HTML Beautifier
CSS Minifier
JavaScript Minifier
Cron Expression Parser
User Agent Parser
Diff Checker
JSON to Model Generator
DEVELOPER GUIDES
jsonb64rxjwthashmdurltscronclruabinuuidsqlhtmldurldiffminapihtml+diff
What is JSON?
What is Base64?
Regex Tutorial
What is a JWT?
What is a Hash Function?
Markdown Guide
What is URL Encoding?
What is a Unix Timestamp?
What is a Cron Job?
Color Codes Explained
What is a User Agent?
Binary, Hex, and Decimal Explained
What is a UUID?
What is SQL?
What are HTML Entities?
What is a Data URL?
How to Read a Diff
What is Minification?
What is an API?
What is an HTML Beautifier?
How to Compare Two Texts