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JWT/JWS/JWK Toolkit

decode tokens, verify signatures, inspect claims, and compare key metadata

Live output enabled
Ready
Example output:
{
  "header": { "alg": "HS256" },
  "payload": { "sub": "1" }
}

About JWT/JWS/JWK Toolkit

JWT/JWS/JWK Toolkit helps you decode tokens, verify signatures, inspect claims, and compare key metadata directly in your browser with no backend dependency.

Use Cases

  • Run JWT/JWS/JWK Toolkit while debugging API responses and config snippets.
  • Share normalized output from JWT/JWS/JWK Toolkit with teammates quickly.
  • Use JWT/JWS/JWK Toolkit as part of a repeatable local text-processing workflow.

Examples

Sample JWT/JWS/JWK Toolkit transformation output.

Input

eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIiwiaWF0IjoxNzAwMDAwMDAwfQ.signature

Output

{
  "header": { "alg": "HS256" },
  "payload": { "sub": "1" }
}

Idempotent rerun example for JWT/JWS/JWK Toolkit when applicable.

Input

{
  "header": { "alg": "HS256" },
  "payload": { "sub": "1" }
}

Output

{
  "header": { "alg": "HS256" },
  "payload": { "sub": "1" }
}

FAQ

Does JWT/JWS/JWK Toolkit send my data to a server?

No. Execution happens in your browser tab.

Can I share a direct URL for JWT/JWS/JWK Toolkit?

Yes. Every tool has its own indexable route under /tools/<slug>.