JWT Decoder
Decode a JSON Web Token and read its header and payload. Decoding only — the signature is not verified. Enter your values and press the action button to see the result.
This tool only decodes. It never verifies the signature and never sends your token anywhere — but a JWT is still a credential, so avoid pasting production tokens into any website you do not control.
About JWT Decoder
Decode a JSON Web Token and read its header and payload. Press Decode to see the result in the results panel. Everything runs locally in your browser; nothing is uploaded. Only the current result is shown — no history or side-by-side comparison.
JWT Decoder reads “Paste your JWT” from the form above and writes the answer into the results panel — This tool only decodes. It never verifies the signature and never sends your token anywhere — but a JWT is still a credential, so avoid pasting production tokens into any website you do not control. There is no account, no upload and no server round-trip: the JavaScript on this page does the work on your own device.
How to use JWT Decoder
- Open JWT Decoder from Text & Code, or find it with the search box in the header.
- Fill in the fields shown above: “Paste your JWT”.
- Press Decode. The result replaces whatever was shown before; only the current run is displayed, never two results side by side.
- Use Copy to put the result on your clipboard. A message appears only when something was actually copied.
A worked example
Enter your own values in the fields above and press Decode. Change any input and press again; the result is recalculated from the current inputs and replaces the previous one.
Frequently asked questions
Is what I type uploaded anywhere?
No. JWT Decoder processes “Paste your JWT” with JavaScript inside your browser. Your inputs and the result stay on your device; Utilixo keeps no copy of them.
Can I keep several results to compare?
No. Each press of Decode rebuilds the result from the current inputs and overwrites the previous one. To compare runs, note the earlier result down yourself.
Anything specific to watch with JWT Decoder?
This tool only decodes. It never verifies the signature and never sends your token anywhere — but a JWT is still a credential, so avoid pasting production tokens into any website you do not control.
How do I take the result away?
Press Copy after a result appears. The copy button only reports success when there is content to copy.
Do I need to sign up or pay?
No. JWT Decoder is free, needs no registration and has no usage limit. Open the page and use it.
Related tools
- Base64 Encode / Decode — Encode and decode Base64 with correct UTF-8 handling, so emoji and accents survive the round trip.
- Duplicate Line Remover — Remove duplicate lines from a list, with options to trim whitespace, ignore blank lines and sort.
- Hash Generator — Generate MD5, SHA-1, SHA-256 and SHA-512 checksums locally. Nothing is uploaded.
Further reading
Read the Text & Code guide for a longer walkthrough of every tool in this category, with practical examples and tips.