WordPress WebP upload / feltoltes

wordpress-webp-upload.php

/**
* Sets the extension and mime type for .webp files.
* @param array $wp_check_filetype_and_ext File data array containing 'ext', 'type', and * 'proper_filename' keys.
* @param string $file Full path to the file.
* @param string $filename The name of the file (may differ from $file due to
* $file being in a tmp directory). 
* @param array $mimes Key is the file extension with value as the mime type. 
*/
add_filter( 'wp_check_filetype_and_ext', 'wpse_file_and_ext_webp', 10, 4 );

function wpse_file_and_ext_webp( $types, $file, $filename, $mimes ) {
  if ( false !== strpos( $filename, '.webp' ) ) { $types['ext'] = 'webp'; $types['type'] = 'image/webp'; }
  return $types;
}

/**
* Adds webp filetype to allowed mimes 
* @see https://codex.WordPress.org/Plugin_API/Filter_Reference/upload_mimes 
* @param array $mimes Mime types keyed by the file extension regex corresponding to 
* those types. 'swf' and 'exe' removed from full list. 'htm|html' also 
* removed depending on '$user' capabilities. * @return array 
*/
add_filter( 'upload_mimes', 'wpse_mime_types_webp' );

function wpse_mime_types_webp( $mimes ) {
  $mimes['webp'] = 'image/webp'; return $mimes;
}

/**
* Source: Dave Romsey (https://wordpress.stackexchange.com/questions/323221/allowing-webp-uploads)
*/