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Developer Tools
Encode, decode, format, generate and test — a full toolkit for developers that runs 100% in your browser with no data sent anywhere.
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All Developer Tools
14 toolsJSON Formatter
Prettify, minify and validate JSON instantly.
Base64 Encoder / Decoder
Encode or decode Base64 strings in one click.
URL Encoder / Decoder
Encode or decode URLs and query parameters.
HTML Encoder / Decoder
Convert special characters to HTML entities and back.
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes.
JWT Decoder
Decode and inspect JSON Web Tokens without a server.
UUID / GUID Generator
Generate random UUIDs (v4) for your projects.
Regex Tester
Write and test regular expressions with live match highlighting.
CSS Minifier & Beautifier
Minify CSS for production or beautify it for editing.
JavaScript Minifier
Minify JS files to reduce load time.
Markdown Preview
Write Markdown and see the rendered HTML side by side.
Number Base Converter
Convert between binary, octal, decimal and hex.
Text to Binary
Convert plain text to binary code and back.
Password Generator
Generate strong, random passwords with custom rules.