JWT Decoder
Decode JWT instantly with header/payload and expiry status.
JWT Input
0Header
Payload
Signature
Claims
No data
Validation
StructureStructure invalid
HeaderHeader is not JSON
PayloadPayload is not JSON
Expires At
Not Before
Now
Algorithm
No data
Type
No data
Issued At
No data
About This Tool
The JWT decoder helps you quickly inspect token contents. It supports optional Bearer prefix, parses header and payload, shows issued/not-before/expiration timestamps with status hints, and provides structure validation and copy actions. All processing happens locally in the browser.
Features
- 🔍 Structure Check: Detect standard JWT three-part format
- 🧩 Parsed View: Formatted JSON for header/payload
- ⏰ Time Status: Issued, not-before, expiration at a glance
- 📋 One-click Copy: Quickly copy decoded results
- 🧪 Sample & Clear: Built-in sample token for quick start
- 🔒 Local Processing: No data upload