JWT Inspector
Decode a JWT header and payload to pretty JSON and inspect its claims in your browser (does not verify the signature).
Runs entirely in your browser — nothing you enter is uploaded or stored.
JWT Inspector
Decode a JWT header and payload to pretty JSON and inspect its claims in your browser (does not verify the signature).
Paste your jwt on the left and the result is produced instantly — entirely in your browser. Your data never leaves the page, which you can confirm from the Network panel or our privacy policy.
Frequently asked questions
How do I use the JWT Inspector?
Paste or type your jwt on the left and the decoded jwt appears on the right — copy or download it. Everything runs in your browser.
Is my data uploaded anywhere?
No. This tool runs entirely in your browser — your input is never sent to a server. You can verify it in the Network tab or in our Content-Security-Policy.
Is the JWT Inspector free?
Yes — completely free, no sign-up and no limits. Everything happens client-side.