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JWT Generator
Generate signed JWT tokens with HS256/HS384/HS512. Edit header, payload and secret directly in the browser.
Algorithm
HS256 (SHA-256)
HS384 (SHA-384)
HS512 (SHA-512)
Header
Payload
{ "sub": "1234567890", "name": "John Doe", "iat": 1781058099, "exp": 1781061699 }
Secret Key
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Generated Token
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Decoded payload
⚠ Generated client-side via SubtleCrypto. Never share real secrets in browser tools.