replaceCharset

string public static
\Bitrix\Fileman\Block\Editor::replaceCharset(
 string $html,
 string $charset = '#CHARSET#',
 boolean $add = false
);

This static method changes encoding in HTML string.

Parameter	Description	Version
$html	HTML string.
$charset	Encoding.
$add	Yes/no to add encoding, when it is not specified in HTML.