Decode a JSON Web Token’s header and payload, with expiry shown in plain English.
No — it decodes the header and payload only, entirely on your device. Verifying a signature needs the signing key and belongs on your server.
This tool runs entirely in your browser. Your file is processed on your device and is not uploaded to a server.
Encode and decode Base64 text — Unicode-safe — plus file to Base64 and back.
Format, validate and minify JSON with precise, human-readable error messages.
Convert Unix timestamps to human dates and back — seconds or milliseconds, local and UTC.