Developer Tools
Developer Tools Online
Format JSON, encode Base64, generate passwords and UUIDs, pick colors and minify CSS. All tools run entirely in your browser — no upload, no account, complete privacy.
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JSON Formatter
Pretty-print and validate JSON with 2 or 4 spaces
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Base64 Encoder / Decoder
Encode or decode text and files as Base64
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URL Encoder / Decoder
Percent-encode or decode URLs and query strings
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Password Generator
Generate strong random passwords with a strength meter
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UUID Generator
Generate UUIDs in standard, uppercase or no-hyphens format
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Color Picker
Pick colors and convert between HEX, RGB, HSL and HSV
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CSS Minifier
Minify CSS by stripping comments and whitespace
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✅All tools run in your browser. Your data never leaves your device — no upload, no server, complete privacy.