Gravatar Usage Examples #

General #

Change the link from https://www.gravatar.com/avatar/:hash to https://gravatar.webp.se/avatar/:hash.

Wordpress #

Edit your theme, and add the following code inside the functions.php:

function use_webp_public_service($avatar) {
	$avatar = str_replace(array("www.gravatar.com", "0.gravatar.com", "1.gravatar.com", "2.gravatar.com"), "secure.gravatar.com", $avatar);
    $avatar = str_replace("https://secure.gravatar.com", "https://gravatar.webp.se", $avatar);
	return $avatar;
}
add_filter('get_avatar', 'use_webp_public_service');

like this: