JWK Inspector
Paste a JWK Set, JWS (JWT), or JWE token to inspect its structure. Everything runs in your browser — nothing is sent to any server.
About the JWK Inspector
The JWK Inspector lets you decode and analyze JSON Web Key (JWK) sets, JSON Web Signature (JWS) tokens — including JWTs — and JSON Web Encryption (JWE) tokens. Auto-detection identifies the format from the input. All processing is done entirely in your browser; no data is transmitted.
- JWK Set — displays each key's type, usage, algorithm, key ID, and a human description.
- JWS / JWT — decodes the header and payload, annotates standard claims (exp, iat, sub, iss), and flags security warnings such as
alg=noneor expired tokens. - JWE — labels all five compact-serialization parts. Decryption is out of scope as it requires the private key.
JWK Inspector
JWK Inspector is a free, client-side tool designed to help developers with inspect jwk key sets, decode jws signed tokens, and analyze jwe encrypted tokens..
How to Use
- Input your data into the primary editor or upload a file.
- Adjust any necessary configuration options.
- View the output in real-time or click the action button to process.
- Copy or download the results securely.
Privacy First
All processing happens directly in your browser. We never send your sensitive data to our servers.
Frequently asked
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