Developer Tools
Format JSON, encode Base64, generate UUIDs and decode JWTs.
JSON Formatter
PopularFormat, minify and validate JSON with syntax highlighting.
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Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text.
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UUID Generator
Generate UUID v4 identifiers in bulk.
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JWT Decoder
Decode and inspect JWT tokens — header, payload and signature.
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Small utilities that save developers time. Format and validate JSON, encode and decode Base64, generate cryptographically secure UUIDs, and inspect JWT payloads. Every tool runs locally in your browser, so sensitive tokens and data are never transmitted anywhere.