Upload WebP image files to Wordpress

webP-to-wp.php

// --- TESTED WITH WordPress 5.3.2
// --- ADD BELLOW CODE TO function.php

//** Enable upload for webp image files */
function webp_upload_mimes($existing_mimes) {
    $existing_mimes['webp'] = 'image/webp';
    return $existing_mimes;
}

//** Enable preview / thumbnail for webp image files */
function webp_is_displayable($result, $path) {
    if ($result === false) {
        $displayable_image_types = array( IMAGETYPE_WEBP );
        $info = @getimagesize( $path );

        if (empty($info)) {
            $result = false;
        } elseif (!in_array($info[2], $displayable_image_types)) {
            $result = false;
        } else {
            $result = true;
        }
    }

    return $result;
}

add_filter('file_is_displayable_image', 'webp_is_displayable', 10, 2);
add_filter('mime_types', 'webp_upload_mimes');

Works perfect, thank you

Works perfect, thank you

Thank you. But this is not my writing. I collected it here after getting it online. But unable to remember the source.