DeveloperLocal processing
JWT Decoder
Parse Header & Payload locally — never uploaded
Parses content only — signature is not verified. Do not paste sensitive tokens in public.
JWT Token
About This Tool
JWT Decoder is a free online tool. Decode JWT tokens online All processing runs locally in your browser — files are never uploaded to any server, keeping your data private.
Use Cases
- Format JSON, YAML, TOML, SQL, and XML for API debugging
- Encoding, hashing, JWT decode, AES crypto, and security tasks
- Regex, JSONPath, IP, Cron, and other developer utilities
- Run locally — configs and secrets never leave your device
How to Use
- Step 1
Paste a JWT token
- Step 2
Header and Payload are parsed automatically
- Step 3
View formatted JSON
- Step 4
Copy each part
Frequently Asked Questions
- Is JWT Decoder free?
- Yes, completely free with no registration required and no usage limits.
- Are my files uploaded to a server?
- No. JWT Decoder processes everything locally in your browser. Your data never leaves your device or gets uploaded to any server.
- Which browsers are supported?
- Chrome, Firefox, Safari, Edge, and other modern browsers. We recommend using the latest version for the best experience.
- How do I use JWT Decoder?
- 1. Paste a JWT token 2. Header and Payload are parsed automatically 3. View formatted JSON 4. Copy each part