JWT Generator
Create, sign and inspect HS256 JSON Web Tokens with custom claims using WebCrypto, entirely offline.
Everything happens locally with WebCrypto — no server sees your secret or token. HS256 only, by design.
About JWT Generator
Create, sign and inspect HS256 JSON Web Tokens with custom claims using WebCrypto, entirely offline.
JWT Generator does the security work in your browser using well-known algorithms, so sensitive input never has to be sent to a remote server.
How to Use JWT Generator
- Enter the secret text, file or value you want to process.
- Choose the algorithm, key or options required.
- Run the operation — the output appears instantly and locally.
- Copy the result safely.
Key Features
- Encryption and hashing run locally — your secrets stay on your device.
- Uses established, well-documented algorithms and standards.
- No account, no key storage, no data retention.
Frequently Asked Questions
Is JWT Generator safe to use with sensitive data?
Yes. JWT Generator runs entirely inside your browser using in-page cryptography, so your inputs are never uploaded, logged or shared.
Is JWT Generator free to use?
Yes. JWT Generator is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. JWT Generator runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does JWT Generator work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.
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