Decode JWT headers, claims and timestamps locally without claiming signature verification.
The browser uses local APIs already available on your device.
Ordinary page requests may still appear in access logs. Tool content is excluded from Analytics.See privacy proof →JWT Inspector is a browser-based utility designed to decode JWT headers, claims and timestamps locally without claiming signature verification.
{
"alg": "none",
"typ": "JWT"
}{
"sub": "whaletu",
"exp": 4102444800
}Decoding does not verify the signature or prove that claims are trustworthy. The token stays in this tab.
No. This tool deliberately shows Not verified.
No. It remains in component state in this tab.
Decode JWT headers, claims and timestamps locally without claiming signature verification. The expected result is decoded header, payload and time-claim status without signature verification.
Use a lookup value. The page validates supported formats and explains known limits before or during processing.
No. Processing happens inside this browser tab and input content is not included in WhaleTu analytics.
Yes. No account is required.