About this utility
How to use JWKS Key Set Inspector
Validate a JSON Web Key Set, calculate RFC 7638-style public-material thumbprints, and flag private keys or duplicate IDs.
What to provide
Paste a JWKS object with a keys array. Key material is parsed locally and never contacted.
- Paste, type, or drag and drop a supported text file into the input area.
- Review the input and the clearly labeled output behavior.
- Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.
What the result means
A key inventory with type, algorithm hints, use, key ID, thumbprint, and risk flags.
Privacy and safety
This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.
Limitations
- All input and output remains in this browser tab and is never uploaded or saved. Structural validity and a thumbprint do not establish issuer trust, key ownership, revocation status, or safe algorithm policy.
Try the included example
Select “Load example” at any time to restore this tested sample.
{"keys":[{"kty":"OKP","crv":"Ed25519","kid":"signing-2026","x":"11qYAYdk9JfE_X4iOl30jZL4TJlH0ITbO8qJmllBWeQ","alg":"EdDSA","use":"sig"}]}