How to Decode a JWT token

Decode and inspect JSON Web Tokens in your browser. View header, payload, and signature claims. Verify signatures without sending your token to a server.

4 min read JWT Decoder Free, no signup required

Quick start

JWT Decoder — Decode and inspect JSON Web Tokens in your browser.

Get started in under two minutes:

Open the tool and provide your input
Review and adjust settings
Review the output
Copy the result

Open JWT Decoder

Step-by-step instructions

Follow these steps to get the best results from JWT Decoder:

Open the tool and provide your input

Use the input area to provide your content or data. Your file never leaves your device.

Tip: No account or signup is needed. The tool is ready to use immediately.

Review and adjust settings

Use the settings panel to refine the output. JWT Decoder lets you decode and inspect json web tokens in your browser.

Tip: Most settings work well at their defaults — only adjust when you need specific output.

Review the output

Check the result against what you expected. Look for any errors or unexpected output.

Tip: You can experiment freely — nothing is saved or sent anywhere until you download or copy.

Copy the result

Click the "Copy" button to copy the output to your clipboard. The button briefly changes to "Copied!" to confirm the action.

Tip: Paste the result directly into your project, code editor, or document.

Open JWT Decoder

Frequently asked questions

Are my data uploaded to a server?

No. JWT Decoder processes everything locally in your browser using JavaScript. Your data never leave your device, making it safe for confidential or sensitive content.

Is JWT Decoder free to use?

Yes — JWT Decoder is completely free with no account or signup required. All core features are available immediately.

Does JWT Decoder work on mobile devices?

Yes — JWT Decoder works on smartphones and tablets through any modern mobile browser. The interface adapts to smaller screens automatically.