Is it safe to paste my JWT here?

Yes. All processing happens entirely in your browser. No data is sent to any server. However, avoid sharing JWTs in screenshots or public channels.

Can DevDash verify the JWT signature?

DevDash decodes and displays the JWT but does not verify signatures, as that requires the signing secret or public key which should remain on your server.

What does the exp claim mean?

The exp (expiration time) claim is a Unix timestamp indicating when the token expires. DevDash shows whether it is expired and, if still valid, how much time remains.

Why are there three colored sections?

A JWT has three Base64URL-encoded parts: header (blue, contains algorithm), payload (green, contains claims), and signature (red, cryptographic verification). They are separated by dots.

JWT Decoder

Security Tools

Split a JWT into its three parts (header, payload, signature), decode each from Base64URL, and pretty-print the JSON. Shows algorithm, expiration status (expired/valid with time remaining), and color-codes each section.

100% client-side processing

Paste JWT

How to Use JWT Decoder Online

Paste your data into the input field above
The result appears instantly in the output area
Click "Copy" to copy the result to your clipboard

Decode and inspect JSON Web Tokens with expiry status. Runs 100% client-side — no data is sent to any server.

Frequently Asked Questions

Related Tools

Hash Generator

Generate SHA-256, SHA-1, and MD5 hashes simultaneously

Password Generator

Generate strong random passwords with customizable options