In this snippet the are going to allow to upload only jpg and pdf format.
// ========================================================================= // DISALLOW PNG, GIF, TIF // ========================================================================= function theme_restrict_mime_types( $mime_types ){ $mime_types = array( 'pdf' => 'application/pdf', 'jpg|jpeg' => 'image/jpeg', ); return $mime_types; } add_filter( 'upload_mimes', 'theme_restrict_mime_types' );
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