Developer Tools
Free online developer tools. Regex tester, JSON formatter, minifiers, and more.
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Regex Tester
Test regular expressions with live matching and highlighting.
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JSON Formatter
Format, validate, and beautify JSON data.
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CSS Minifier
Minify CSS code to reduce file size.
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HTML Minifier
Minify HTML code to reduce page size.
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Base64 Encoder/Decoder
Encode and decode Base64 strings.
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URL Encoder/Decoder
Encode and decode URLs for safe transmission.
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Hash Generator
Generate MD5, SHA-1, SHA-256 hashes.
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Color Picker
Pick colors and get HEX, RGB, HSL values.
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QR Code Generator
Generate QR codes from text or URLs.
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JWT Decoder
Decode and inspect JSON Web Tokens.
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All tools run entirely in your browser. No data is sent to any server. Free to use, no signup required.