JWT Decoder
Decode JSON Web Tokens (JWT) instantly to view header, payload, and signature. Perfect for developers, security analysts, and learners.
Input (JWT Token)
Paste a JWT token to decode
Output (Decoded)
Options
What is the JWT Decoder?
A JWT Decoder is a tool that extracts and displays the contents of a JSON Web Token, including its header, payload, and signature.
It’s useful for developers debugging authentication tokens, security experts analyzing claims, and learners understanding how JWTs work.
How to Use the JWT Decoder
Follow these simple steps:
Step 1:Paste JWT:
Enter or paste your JWT string into the input box.
Step 2:Decode:
Click the decode button to parse the token into its components.
Step 3:View details:
See the header, payload (claims), and signature separated clearly.
Step 4:Analyze or copy:
Use the decoded data for debugging, verification, or documentation.
Common Uses
Why you might use this tool:
- DebuggingEasily inspect JWT contents during authentication and API testing.
- SecurityAnalyze claims, expiration, and signing details for token verification.
- LearningUnderstand the structure of JWTs and how they are used in modern authentication.
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