JWT Tool

Use this tool to decode an existing JSON Web Token (JWT) or generate a new one. Switch between "Decode" and "Generate" modes below.

About This Tool

How to Use
  1. Paste a JWT token into the input field
  2. The header, payload, and signature are decoded automatically
  3. Review the claims in the payload section
  4. Check the algorithm in the header
Common Use Cases
  • Debugging authentication issues in web applications
  • Inspecting token expiration times
  • Verifying token claims during API development
  • Understanding OAuth2 access token contents
Tips & Tricks
  • JWT tokens have three parts separated by dots
  • The signature is NOT verified — this tool only decodes

You might also like

JSON Formatter & Validator

Paste JSON to pretty-print, validate, minify, and explore. Click any node in the tree view to copy its JSONPath expression — perfect for building API queries.

Base64 Decoder

Decode and encode Base64 payloads instantly. Supports iterative decoding for multi-layered encoded data — essential for debugging APIs and data pipelines.

Encryption & Hashing Explorer

Discover how encryption secures your data and how hashing transforms information into a unique fingerprint. Perfect for novices eager to learn cryptography.

cURL to Code Converter

Paste a cURL command and instantly get the equivalent code in Python, JavaScript, Go, PHP, and more. Perfect for converting browser DevTools requests into production code.