Developer Information Tools
Decode JWT tokens, search HTTP status codes, lookup MIME types, and inspect browser User-Agents.
100% Client-Side
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JWT Decoder
Decode JSON Web Tokens (Header, Payload, Claims) 100% client-side.
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HTTP Status Code
Searchable reference of 1xx to 5xx HTTP response status codes.
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MIME Type Lookup
Lookup MIME types and file extensions instantly.
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User Agent Parser
Inspect browser, OS, engine, and device type from User-Agent string.
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