How to Use JWT Inspector
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1. Paste a JWT Token
Paste a JWT token into the input field to begin inspection.
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2. Review Claims and Expiry
The inspector highlights the expiry time, issued-at date, and all payload claims with human-readable timestamps.
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3. Copy Individual Fields
Click any field value to copy it directly to your clipboard.
The Technical Details
This interactive web utility provides fast, reliable, and completely private data transformations. In modern workflows, quick formatting, conversions, or estimations are essential. By running all logic entirely in your browser with client-side JavaScript, this tool guarantees that your data never leaves your machine. This approach delivers maximum performance and absolute data privacy, as no information is ever sent to a server.
Frequently Asked Questions
How does this differ from the JWT Decoder?
The JWT Inspector focuses on claims analysis: it highlights expiry status, formats timestamps, and flags expired tokens. The Decoder shows raw decoded JSON.
Does the tool check if the token is expired?
Yes. It compares the 'exp' claim against the current time and displays whether the token is still valid.
Is my token sent to a server?
No. All inspection runs locally in your browser with no network requests.
Which signing algorithms are supported?
The inspector handles any JWT regardless of algorithm (HS256, RS256, ES256, etc.) since it decodes the payload without verifying the signature.