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JWT Compare Tool
Decode two JWTs side by side, inspect their payloads, and highlight which claims are added, removed, or changed.
How to use this tool
- Paste baseline and comparison JWTs into the two token inputs.
- Review decoded headers/payloads and inspect the claims diff output.
- Copy or download the generated inspection report for audit trails.
What this inspector is for
- Compare claim changes between login, refresh, and role updates.
- Audit token shape changes during auth pipeline migrations.
- Generate machine-readable JSON or plain text reports for review.
Security boundaries
- This tool decodes header and payload segments only.
- Signature verification is not performed and must be done server-side.
- Treat pasted tokens as sensitive data and avoid sharing raw values.
FAQ
- Does this validate token signatures?
- No. It only decodes and compares claims. Use backend JWT libraries for cryptographic verification.
- Can it decode encrypted JWE tokens?
- No. Encrypted JWT formats are not supported in this inspector.
- Is token data uploaded?
- No. Decoding and diffing run locally in the browser.
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