toolhut
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JWT decoder

Read the header and payload of a token without sending it.

devcrypto
The header appears here.
The payload appears here.
The signature appears here.

The signature is shown as the opaque string it is. This tool does not verify it, because verifying needs the key, which only your server has. Decoding happens in this tab, so the token is never sent anywhere.

Related tools

Converting a file should not mean handing it to a stranger.

Every other converter asks you to upload first. Yours never leaves the tab.

Read, converted and handed back, all in this tab.
No request is ever made. There is no server to make it to.
  1. toolhut.io
    01

    Load once

    After that it works with the network off.

  2. 02

    Work here

    Your file is processed on your own processor.

  3. 03

    Keep nothing

    Close the tab and every trace is gone.

Answers to your questions

Need anything else? Ask on GitHub.

Do not trust us. Read the code.

Every line is public and MIT licensed. Check it, fork it, or build the next tool.

ContributeBrowse the source