Tools / JWT Decoder

JWT Decoder

Decode and inspect JWT tokens — header and payload.

Note: Decoding shows the token contents. It does not verify the signature. Never paste production tokens with sensitive data on untrusted sites.

What is the JWT Decoder?

Decode and inspect JWT tokens — header and payload.

It runs 100% in your browser — your files never leave your device, no signup is required, and there are no usage limits or watermarks.

How to Use the JWT Decoder

  1. Paste, drop, or type your input into the tool above.
  2. Adjust the options to match what you need.
  3. Preview the result before copying or downloading.
  4. Everything is generated on your device — nothing is uploaded.

Why Use Our JWT Decoder?

  • 100% private — files never leave your device.
  • No signup, no email, no limits — completely free.
  • Works on any device — desktop, tablet, mobile.
  • No watermarks, no hidden fees.

Frequently Asked Questions

Is the JWT Decoder free?

Yes — completely free with no signup, no email, and no usage limits.

Are my files uploaded to a server?

No. Everything runs in your browser using JavaScript. Your files never leave your device.

Do I need to install anything?

No — just open this page in any modern browser (Chrome, Firefox, Safari, Edge).

Does the JWT Decoder work on mobile?

Yes, on iOS and Android browsers. Very large files are best handled on desktop.

Is there a file size limit?

No hard limits. Files under 100 MB work well on most devices.

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