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Developer Tools
Free browser-based developer utilities: JSON formatting, encoding/decoding, regex testing, color conversion, and more.
JSON Validator & Formatter
Validate and pretty-print JSON
Base64 Encoder / Decoder
Encode or decode Base64 strings
Regex Tester
Test regex patterns with explanations
Hex ↔ RGB Converter
Convert hex colors to RGB and back
SQL Formatter
Format and indent SQL queries
URL Encoder / Decoder
Encode or decode URL strings
CSS Minifier
Minify CSS to reduce file size
HTML Entity Encoder
Encode/decode HTML special characters