Text Tool Kit
Fast text utilities without the clutter
Minimal browser tools for common formatting, counting, and encoding tasks.
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JWT Parser
Paste a JSON Web Token to inspect its header, payload, signature, and common time-based claims without sending data anywhere.
How to use
- Paste a full JWT token into the input field.
- The header and payload are decoded locally in your browser.
- Use the result panel to inspect expiration, issued-at, and other claims.
JWT decoding happens locally and your last token stays only in this browser.
Common use cases
- Inspect token claims while debugging authentication flows.
- Check issued-at and expiration timestamps quickly.
- Decode JWT contents without using external online decoders.
FAQ
Does this verify the signature?
No. It decodes the token parts for inspection only and does not validate authenticity.
Is my token uploaded anywhere?
No. Decoding happens locally in the browser.
Related tools
Learn more
How to decode JWT tokens safelyA lightweight guide to inspecting JWT headers and payloads without confusing decoding with verification.JWT decode vs verify: what is the difference?A simple explanation of why reading a JWT payload is not the same thing as proving the token is trustworthy.How to convert Unix timestamp to a readable dateA straightforward guide to turning epoch values into local and UTC times when debugging logs, tokens, and APIs.
Privacy note
Tool processing happens in your browser. Some tools save your latest input in local storage for convenience. Review the privacy page before using the site on a shared device or before enabling optional third-party scripts on the site.