Verified Developer Solution • 100% OfflineFix "TokenExpiredError: jwt expired"
Handle JWT expiration gracefully on the frontend using refresh tokens.
The Problem (Error Root Cause)Exception
Your API calls are failing with a 401 Unauthorized and `TokenExpiredError: jwt expired`. The `exp` claim in the JSON Web Token is in the past.
Identified via runtime validation & stack traces
The Solution (Step-by-Step Fix)Verified
You must handle this gracefully on the client by intercepting the 401 response and using a Refresh Token to obtain a new JWT, or by redirecting the user to the login screen.
Deterministic, non-destructive resolution
Code Standard: Bad Pattern vs Verified Fix
Live SyntaxAnti-Pattern vs Verified Fix
1// ✅ Good: Axios interceptor for refresh2axios.interceptors.response.use(res => res, async error => {3 if (error.response.status === 401) {4 await refreshTokens();5 return axios.request(error.config);6 }7 return Promise.reject(error);8});Test and resolve this using JWT Decoder & Inspector
Execute directly in your browser memory. Zero API keys, zero network tracking, completely client-side.
Frequently Asked Questions
Q:Why not make JWTs last forever?
Security. If a JWT is stolen, the attacker has access forever. Short-lived JWTs (e.g., 15 mins) minimize this risk.
Q:How can I check when my token expires?
Paste your token into our JWT Decoder to view the exact expiration date in your local time zone.