JWT Decoder
Decode JWT header and payload for inspection. Decode-only—does not verify signatures or authenticity.
Decode only — this tool does not verify the JWT signature or confirm token authenticity. It is not encryption or a security check.
Decoded header and payload will appear here.
Understanding JWT Decoder
A JWT Decoder reads the Base64URL-encoded header and payload of a JSON Web Token and shows them as JSON. It does not verify signatures, expiration, issuer, or authenticity.
What this tool does
- Split a three-part compact JWT
- Decode Base64URL segments (including
-,_, and missing padding) - Parse header and payload JSON for inspection and debugging
How to Use the JWT Decoder
Paste your JWT into the text area and click "Decode JWT". The decoded header and payload appear below. The signature segment is ignored and never verified.
Important: decoding shows claims only. Do not treat a successfully decoded token as trusted or authenticated.
Similar Developer tools
Random Number Generator
Generate random numbers for lotteries, raffles, security codes, and more with our Random Number Generator.
Hex to RGB Converter
Convert hexadecimal color codes to RGB color values effortlessly with our Hex to RGB Converter. Perfect for web and graphic designers.
Markdown Previewer
Preview your Markdown content in real-time with our Markdown Previewer. Perfect for documentation, notes, and blog posts.