JWT Decoder — Decode JWT Tokens Online Free

What is JWT Decoder?

Decode JWT tokens. View header and payload as formatted JSON.

Decode JWT (JSON Web Token) header and payload without verifying the signature.

How to Use JWT Decoder

1. Paste or type your input into the editor on the left panel.
2. Results update automatically while you type. You can also press Ctrl+Enter to force a refresh.
3. View the result in the output panel on the right with full syntax highlighting.
4. Use Copy or Download to export the result.
5. Drag and drop .json or .txt files directly into the editor.

Example

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIn0.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

{"header":{"alg":"HS256","typ":"JWT"},"payload":{"sub":"1234567890","name":"John Doe"}}

Common Use Cases

• Debug authentication tokens
• Inspect token claims

Common Errors

Why Use Our JWT Decoder?

• 100% client-side — your data never leaves your browser. No server processing, no data collection.
• No sign-up required — start using the tool instantly with no registration or installation.
• Keyboard shortcuts — press Ctrl+Enter to run, ? for shortcuts list, Ctrl+B to toggle sidebar.
• Persistent state — your input is automatically saved across sessions using local storage.
• IDE-style interface — Monaco Editor (the engine behind VS Code) with syntax highlighting and error detection.
• Multi-format conversion — convert between JSON, XML, CSV, and YAML without switching tools.

Frequently Asked Questions

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