Auth0 ID Token Size Calculation

Auth0 calculates the ID token size based on the total byte size of the encoded JSON Web Token (JWT). Determining the exact size of an Auth0 ID token helps resolve token length limits or URL fragment constraints.

• Auth0
• ID Tokens
• JSON Web Token (JWT)

How does Auth0 calculate the ID token size?

Auth0 calculates the ID token size using the full encoded JWT byte size. This measurement incorporates the header, payload, and signature in UTF-8 bytes, representing the exact size as it appears in the URL fragment.