True when value is canonical base64: the standard alphabet (A–Z a–z 0–9 + /), optional = padding, no whitespace, and a length that can encode whole bytes. The empty string is valid and decodes to zero bytes.
value
A–Z a–z 0–9 + /
=
The string to check.
True when
valueis canonical base64: the standard alphabet (A–Z a–z 0–9 + /), optional=padding, no whitespace, and a length that can encode whole bytes. The empty string is valid and decodes to zero bytes.