JWT Encoder & Decoder - JWT Toolbox

Tracking since Apr 18, 2026.

Changelog

• May 6, 2026
  description

  JWT Toolbox is a local JWT encoder, decoder, generator, and verifier for developers working with JSON Web Tokens in Chrome.
  
  Decode JWTs, inspect headers and payloads, edit claims, generate new test tokens, re-sign tokens with HS256, and verify HS256 signatures without sending your data to an external service.
  
  Key Features:
  - Encode and generate JSON Web Tokens for development and testing
  - Decode JWT headers, payloads, and signatures in a readable format
  - Edit JWT claims and re-encode tokens instantly
  - Generate unsigned or HS256-signed JWTs
  - Verify HS256 JWT signatures with a secret
  - Inspect common claims like exp and iat with readable timestamps
  - Save reusable tokens locally
  - Copy or download JWTs for API testing and debugging
  - Customize the interface with multiple themes
  
  Why JWT Toolbox?
  - Runs locally in your browser
  - No external JWT decoder or server required
  - Built for developers, testers, and security engineers
  - Useful for API debugging, bearer tokens, authentication flows, and JSON Web Token testing
  - Lightweight, focused, and easy to use
  
  Privacy:
  JWT Toolbox does not collect, transmit, or sell personal data. JWT encoding, decoding, signing, and verification happen locally in your browser. Saved tokens are stored locally only if you choose to save them. JWT secrets are not saved.

  JWT Toolbox is a local JWT encoder, decoder, generator, and verifier for developers working with JSON Web Tokens in Chrome.
  
  Decode JWTs, inspect headers and payloads, edit claims, generate new test tokens, re-sign tokens with HS256 or RS256, and verify HS256 and RS256 signatures without sending your data to an external service.
  
  Key Features:
  - Encode and generate JSON Web Tokens for development and testing
  - Decode JWT headers, payloads, and signatures in a readable format
  - Edit JWT claims and re-encode tokens instantly
  - Generate unsigned, HS256-signed, or RS256-signed JWTs
  - Verify HS256 and RS256 JWT signatures
  - Inspect common claims like exp and iat with readable timestamps
  - Save reusable tokens locally
  - Copy or download JWTs for API testing and debugging
  - Customize the interface with multiple themes
  
  Why JWT Toolbox?
  - Runs locally in your browser
  - No external JWT decoder or server required
  - Built for developers, testers, and security engineers
  - Useful for API debugging, bearer tokens, authentication flows, and JSON Web Token testing
  - Lightweight, focused, and easy to use
  
  Privacy:
  JWT Toolbox does not collect, transmit, or sell personal data. JWT encoding, decoding, signing, and verification happen locally in your browser. Saved tokens are stored locally only if you choose to save them. JWT secrets and private keys are not saved.

• May 6, 2026
  short_description

  JWT encoder and decoder for Chrome. Generate, inspect, re-sign, and verify HS256 JSON Web Tokens locally.

  JWT encoder and decoder for Chrome. Generate, inspect, re-sign, and verify HS256 or RS256 JSON Web Tokens locally.

• Apr 28, 2026
  description

  JWT Toolbox is a developer utility for working with JSON Web Tokens (JWTs) directly in your browser. Whether you are debugging an API, testing authentication flows, or quickly generating a new token, JWT Toolbox makes the process simple and fast.
  
  Key Features:
  	•	Generate JWTs — Create signed tokens for testing and development.
  	•	Decode JWTs — Instantly view header, payload, and signature in a readable format.
  	•	Edit and modify — Adjust claims or payload values before re-encoding.
  	•	Custom themes — Switch between light and dark modes.
  	•	Quick copy — Copy tokens to your clipboard in one click.
  	•	State persistence — Optional saving of your last-used theme and inputs.
  
  Why JWT Toolbox?
  	•	Runs entirely in your browser — no external services, no data sharing.
  	•	Lightweight and distraction-free — focused purely on JWTs.
  	•	Ideal for developers, testers, and security engineers who need a reliable JWT helper.
  
  Privacy:
  JWT Toolbox does not collect or transmit any personal data. All operations happen locally in your browser. JWT secret is never saved.

  JWT Toolbox is a local JWT encoder, decoder, generator, and verifier for developers working with JSON Web Tokens in Chrome.
  
  Decode JWTs, inspect headers and payloads, edit claims, generate new test tokens, re-sign tokens with HS256, and verify HS256 signatures without sending your data to an external service.
  
  Key Features:
  - Encode and generate JSON Web Tokens for development and testing
  - Decode JWT headers, payloads, and signatures in a readable format
  - Edit JWT claims and re-encode tokens instantly
  - Generate unsigned or HS256-signed JWTs
  - Verify HS256 JWT signatures with a secret
  - Inspect common claims like exp and iat with readable timestamps
  - Save reusable tokens locally
  - Copy or download JWTs for API testing and debugging
  - Customize the interface with multiple themes
  
  Why JWT Toolbox?
  - Runs locally in your browser
  - No external JWT decoder or server required
  - Built for developers, testers, and security engineers
  - Useful for API debugging, bearer tokens, authentication flows, and JSON Web Token testing
  - Lightweight, focused, and easy to use
  
  Privacy:
  JWT Toolbox does not collect, transmit, or sell personal data. JWT encoding, decoding, signing, and verification happen locally in your browser. Saved tokens are stored locally only if you choose to save them. JWT secrets are not saved.

• Apr 28, 2026
  short_description

  A sleek toolbox for creating, decoding, and re-signing JWTs.

  JWT encoder and decoder for Chrome. Generate, inspect, re-sign, and verify HS256 JSON Web Tokens locally.

• Apr 28, 2026
  name

  JWT Toolbox - JWT Encoder & Decoder

  JWT Encoder & Decoder - JWT Toolbox

Permissions & access

Permissions

storage

Host access

None declared

Screenshots

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