JWT Inspector
Read a JWT's header, claims and expiry locally, with a clear signature-verification warning.
Paste JWT or open a fileOr start from an example:
Decoded token
The result appears here as you type.
Ctrl+↵ copy result · Ctrl+Shift+F result to input
How to use JWT Inspector
- Paste a JWT with three dot-separated parts.
- Read its header, claims and time status.
- Verify the signature in your own application before trusting any claim.
Frequently asked questionsUseful details
3 answers +
Does decoding verify the token?
No. A JWT can be decoded without its signing key. This page never establishes authenticity or authorization.
Is the signature sent anywhere?
No. The token stays in your browser and is not stored by this tool.
How is expiry checked?
The exp and nbf numeric claims are compared with your device's current time. Incorrect device time changes that result.
More help
Guides, common conversions and useful next steps.
Continue with your result
Use the action beside a finished result to send it directly, or open another tool:
- Word Counter
- Case Converter
- Compare Text
- Remove Duplicate Lines
- JSON Formatter
- JSON to CSV
- CSV to JSON
- JSON to YAML
- YAML to JSON
- JSONPath Query
- URL Inspector
- Base64 Encoder
- URL Encoder
- HTML Escaper
- Hash Generator
- Timestamp Converter
- Regex Tester
- JSON Lines Converter
- Slug Generator
- Unicode Inspector
- Color Converter
- Aspect Ratio Calculator
- UUID Generator
- Password Generator