Tools
Fileraz
Tools
Fileraz
Try jpg to png, compress image, pdf…
Developer tool
Your files never leave your device
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Work starts the moment you drop a file
No daily limit, no sign-up, no watermark
Anyone can Base64-decode a JWT payload and read the claims. Trust requires verifying the signature with the issuer's key — which should never be pasted into a web page. This tool is for debugging your own tokens in a tab you control, not for accepting tokens from strangers.
Standard three-part layout: header, payload, signature. URL-safe Base64 is normalised with padding before parse. Payload strings are decoded as UTF-8 so Unicode names and messages render correctly.
No HS256/RS256 verification, no JWKS fetch, no signing or minting tokens. If a token is expired, you will see exp in the note block — that is informational only until you verify with the issuer.
No signature verification or JWKS.
Does not mint or sign JWTs.
Time claim hints are not verified.
No. It only decodes header and payload. Signature verification needs the secret or public key in a proper library on your backend.
Decoding happens locally, but anyone with the token can often use it like a bearer credential. Treat pasted tokens as secrets and follow your org policy.
exp, nbf, and iat are rendered as UTC and ISO-8601 for quick reading. They are not cryptographically verified here.
That is the promise behind every tool here. Files are read in your browser tab, processed there, and discarded when you close it — never uploaded to our servers.