WordPress: How to Change Default Avatar Size in Comment List

Gravatars are Globally Recognized Avatars. By default, WordPress uses gravatar to display user’s avatars based on their email. The default size for WordPress’s avatars is 48px which is pretty small. A lot of sites these days are using much larger avatars, a trend that I really like.

I’m using Genesis Framework and below code snippet works perfectly for me to change Default Avatar Size. Just put below code to your Child Theme’s functions.php file.

// Modify Default Gravatar Size
add_filter( 'genesis_author_box_gravatar_size', 'crunchify_author_box_gravatar_size' );
function crunchify_author_box_gravatar_size( $size ) {
    return 90;
}

Another must read:

• How to Change Default Avatar / Gravatar in WordPress

For other WordPress Framework or Other default theme’s i.e. Magazine Premium, TwentyThirteen, TwentyTwelve, etc. You may want to take a look at get_avatar function (most probably in your theme’s functions.php file).

Ref: http://codex.wordpress.org/Function_Reference/get_avatar