The general strategy is to choose 64 characters that are common to most encodings and that are also printable.

for base64url (URL- and filename-safe standard), replace "+" with "-", "/" with "_",
But "-" and "_" may confuse reader on print media.

Full document :
Base64 - Wikipedia
https://en.wikipedia.org/wiki/Base64#Variants_summary_table





This post has been edited by flashang: Jul 25 2023, 09:07 AM