Free Online Developer Tools
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Popular Tools
JSON Formatter & Validator
Beautify, minify, and validate JSON data with syntax highlighting
Base64 Encode/Decode
Encode and decode Base64 strings instantly
UUID Generator
Generate UUID v1, v4, and v7 with custom formats
URL Encode/Decode
Encode and decode URLs with percent-encoding
JWT Decoder
Decode JWT tokens and inspect Header, Payload, and Signature
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
Regex Tester
Test regular expressions with real-time match highlighting
Color Converter
Convert colors between HEX, RGB, and HSL formats
Timestamp Converter
Convert between Unix timestamps and human-readable dates
Markdown Preview
Live preview Markdown with GFM support
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