JWT Decoder and Encoder
Decode, verify and sign JSON Web Tokens. Everything runs locally in your browser.
JWT Decoder and Encoder
How it works
- 1.
Paste your token
Paste your JWT into the input. The three segments are split automatically.
- 2.
Inspect header and payload
Decoded JSON appears instantly on the right. Expiry and issuer are highlighted.
- 3.
Verify with a secret
Enter your secret key to verify the signature. A green check confirms the token is valid.
FAQ
Is my token sent to a server?+
No. Everything runs only in your browser. We do not see, store or log your tokens.
Which algorithms are supported?+
HS256, HS384 and HS512. RS256 and ES256 are on the roadmap.
Are there usage limits?+
The free plan allows up to 20 operations per day. Pro lifts the limit entirely.
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