Skip to content
Tooldict

JWT Decoder

Quickly view user claims and authorization details inside JWTs used in modern authentication systems.

About

**Security Note:** Decoding happens entirely locally in your browser. Your token is never sent to any server.

How to use

  1. 1. Paste your JWT string (usually starting with 'ey...').
  2. 2. The tool automatically splits the Header and Payload and displays them as JSON.
  3. 3. Inspect the claims you need (exp, iat, sub, etc.).

Frequently Asked Questions

Is a JWT encrypted?
Standard JWTs are not encrypted; they are simply Base64 encoded and digitally signed to prevent tampering.

Other tools

DNS Lookup IP Lookup WHOIS Lookup cURL Converter GraphQL Formatter XML Formatter Nginx Config Image to Base64 JSON ↔ CSV JSON Formatter

Embed this tool

Copy the code below and paste it into your site's HTML to embed this tool for free. The snippet includes an attribution link back to the source.

<iframe src="https://tooldict.com/embed/en/jwt-decoder" title="JWT Decoder" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:16px;max-width:680px" loading="lazy"></iframe>
<p style="font:13px/1.5 sans-serif">Powered by <a href="https://tooldict.com/en/jwt-decoder" target="_blank" rel="noopener">JWT Decoder</a> — Tooldict</p>