JWT Debugger & Token Inspector
Decode and debug JSON Web Tokens client-side. Inspect Header, Payload, expiration dates and claims with zero server upload.
100% Client-Side Privacy (No Upload)
100% In-Browser Client-Side Decoding. Your JWT and credentials are never sent to any server.
Token Active (Valid) Exp: 9/21/2030, 4:37:02 PM
HEADER: ALGORITHM & TOKEN TYPE
{
"alg": "HS256",
"typ": "JWT"
}PAYLOAD: DATA CLAIMS
{
"sub": "1234567890",
"name": "John Doe",
"iat": 1516239022,
"exp": 1916239022,
"admin": true,
"email": "john@example.com"
}How to Use JWT Debugger & Decoder
- 1Paste your Bearer token or raw JWT string into the left input box.
- 2The tool automatically parses and color-codes the Header and Payload segments.
- 3Check the expiration timestamp (exp) and token validity status.
Key Features
- 100% In-Browser Privacy: Tokens are NEVER sent to any remote server.
- Automatic expiration (exp) and issued-at (iat) date humanization.
- Color-coded Header and Payload JSON inspector.
Frequently Asked Questions (FAQ)
Yes! Unlike other online tools that send your token to their servers, ToolHub processes everything 100% client-side via JavaScript. You can even disconnect your internet and verify.
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