Base64, JWT and URL decoder
Encode and decode Base64 and URL text, and read what is inside a JWT token.
Runs in this browser. Nothing you give it is uploaded.
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02About this tool
How to use it.
- Choose Base64, JWT or URL text.
- Paste what you have. It decodes straight away; switch to Encode to go the other way.
- Copy the result.
Questions
Is it safe to paste a token here?
The token is read in this tab and never sent. Even so, treat live tokens carefully: anyone who has one can use it until it expires.
Does the JWT decoder check the signature?
No. It shows what is inside. A token that decodes is not necessarily genuine, because anyone can write one. Only your server, with the key, can check a signature.
Need this built into your business?
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