JWT (JSON Web Token) is an open standard for securely transmitting information between parties. Widely used for API authentication.

Is my secret key uploaded?

No. All signing happens locally in your browser. Your secret key never leaves your device.

Which algorithms are supported?

HS256, HS384, and HS512 HMAC-SHA algorithms are supported.

JWT Token Generator Online - JSON Web Token Builder

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Free online JWT token generator. Visually edit Header and Payload, choose signing algorithm, enter secret key to generate standard JWT tokens. All generation happens locally, keys never uploaded.

Zero Deps · Works Offline

🔧 JWT Config

Algorithm

Secret Key

Header (JSON) Payload (JSON)

📋 Generated Token

Click generate...

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🔐 JWT Token Generator

🔧 JWT Config

📋 Generated Token

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