JWKS Inspector
Paste a full JWKS ({"keys":[...]}) to see every key at a glance — algorithm, size or curve, kid, and use — without picking one to convert. Useful for auditing a key set before wiring it into verification code.
How to use it
Paste a JWKS document and click Inspect. Each key is imported via the browser's Web Crypto API — RSA keys report their modulus size, EC keys report their curve — so a malformed entry is caught, not just displayed as-is. Need PEM output for one specific key? Use the JWKS to PEM Converter instead.
Frequently Asked Questions
How is this different from JWKS to PEM?
JWKS to PEM converts one selected key to PEM format. This tool instead summarizes every key in the set at once — algorithm, size/curve, kid, use — without converting any of them. Good for a quick audit or spotting a key rotation issue.
Why does one key show an error?
Each entry is actually imported via crypto.subtle.importKey, not just read as JSON — so a corrupted modulus, wrong curve name, or unsupported key type is reported as an error on that row instead of silently showing wrong data.