Key Features
Decode JWT header and payload
Pretty-print JSON with syntax highlighting
Expiry time in human-readable format
Signature verification (HS256)
One-click copy of decoded payload
Auto-detect token format
How to Use
1Paste your JWT into the input field
2View the decoded header and payload
3Check the expiry time and claims
4Copy the decoded JSON if needed
Common Use Cases
Inspect a JWT during authentication debugging
Check token expiry before making API calls
Verify a JWT signature during development
Understand what claims are encoded in a token
Frequently Asked Questions
Is it safe to paste my JWT here?
Yes. All decoding happens in your browser — the token is never sent to a server. However, you should still avoid sharing JWTs publicly as they may contain sensitive claims.
Can this tool forge or create JWTs?
No. This tool only decodes existing JWTs. It cannot create or sign new tokens.
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