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WasyTech
AvailableOpen SourceMIT

JWT Validator

Local JWT decoding and signature verification.

Instantly decode and verify JSON Web Tokens (JWT) without risking your production secrets. This tool uses the native Web Crypto API to validate HMAC and RSA signatures entirely client-side, ensuring your tokens never leave your device.

  • Web
Open SourceLocal processingNo account

Downloads for this utility are being prepared.

Core features

Included in the free core utility.

  • Offline Base64Url decoding
  • Client-side signature verification
  • Supports HS256 and RS256 algorithms
  • Zero server communication

Privacy & data handling

This utility processes data locally on your device wherever technically possible.

Processing
Local, on your device
Account
Not required
Internet
Works offline
Telemetry
No telemetry

Details

Category
Developer Tools
Platforms
Web
License
MIT

Frequently asked questions

What does JWT Validator do?

Instantly decode and verify JSON Web Tokens (JWT) without risking your production secrets. This tool uses the native Web Crypto API to validate HMAC and RSA signatures entirely client-side, ensuring your tokens never leave your device.

Is JWT Validator free?

Yes. JWT Validator is free to use.

Is JWT Validator open source?

Yes. JWT Validator is open source under the MIT license.

Does JWT Validator require an account?

No. JWT Validator does not require an account.

Does JWT Validator send my data anywhere?

JWT Validator has no telemetry. Processing happens locally on your device.

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