Your files stay on your device

# JWK and JWKS inspector

Paste a JSON Web Key or a JWKS document and get members, sizes, RFC 7638 thumbprint, and the SPKI PEM form, computed by jose in your tab. No URL is ever fetched.
JWK or JWKS JSONInspectPaste, drop, or type to begin. Everything stays on this device.

## More web & auth tools

- [JWT decoder](/web/jwt)
- [Certificate & CSR](/web/certificate)
[All web & auth tools](/web)

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Canonical HTML: https://nutter.tools/web/jwk/
Markdown version: https://nutter.tools/web/jwk/index.md
Plain-text version: https://nutter.tools/web/jwk/index.txt
Agent index: https://nutter.tools/llms.txt