Handlebars Helper Function: base64Encode

Converts plain text to Base64-encoded binary data.

This helper is available in the Winter ’27 release of Marketing Cloud Next.

Parameter	Type	Description
stringToEncode	String	Required. The string to encode.
characterEncoding	String	The character encoding to use. Specify as a named parameter with one of these values: ASCII, UTF-7, UTF-8, UTF-16, or UTF-32.

The function returns the Base64-encoded value of stringToEncode.

This example encodes a coupon code before storing it in a marketing object, so the plain-text value isn’t stored directly.

The function returns this Base64-encoded string:

This example encodes the same string, but specifies UTF-16 character encoding. Because UTF-16 uses more bytes per character, the encoded output is longer.

The function returns: