JWT Decoder & Inspector
Decode JSON Web Tokens (JWT) instantly in your browser to inspect header algorithms, payload user claims, and expiration timestamps securely without uploading tokens anywhere.
{
"alg": "HS256",
"typ": "JWT"
}{
"sub": "1234567890",
"name": "John Doe",
"iat": 1516239022,
"exp": 1916239022,
"role": "admin"
}How to Use the Client-Side JWT Decoder
JSON Web Tokens (JWT) are an open, industry-standard RFC 7519 method for representing claims securely between two parties. Our online JWT Decoder allows software developers and system security engineers to paste any encoded bearer token and inspect its contents immediately.
1. Paste Bearer Token
Copy any OAuth2 or JWT token string directly from developer headers or network logs.
2. Instant Base64 Decoding
The browser decodes the header algorithm specs and payload user claims in real-time.
3. Check Expiration & Claims
Inspect Unix timestamps (exp, iat) and custom user role permissions safely.
Frequently Asked Questions
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