swift_performance_buffer
Filter for the content of the optimized page, just before return after optimization. This filter can be used to manipulate HTML source after optimization.
Parameters
$html
string, contains the full source code of the optimized page
Return
string
Example
// add extra footer comment
add_filter('swift_performance_buffer', function($html){
return str_replace('</body>', '<!-- This is an extra comment --></body>');
});