Developer Utilities

Local browser tools for JSON, encodings, CSV, URL parameters, colors, regular expressions, and source transformations.

Tools in this hub

• JSON Formatter and Validator
• Base64 and URL Converter
• Color Contrast and Converter
• Regex Tester and Builder
• HTML and CSS Minifier
• CSV Converter and Cleaner
• CSV Column Extractor
• URL Query String Parser
• HTML Entity Converter
• Unicode Character Inspector
• Number Sequence Generator
• Free Diff Checker — Compare Text & Code Online
• Private JWT Token Debugger & Decoder
• Free SQL Formatter & Beautifier
• Visual Cron Generator & Crontab Explainer
• Free CSV Duplicate Remover — Clean Data Locally
• JSON to TypeScript Interface Generator