Edit: I got it working and pasted the correct code below for anyone else with same challenge:
@angus After some reading I found the location to override the size of gravatar on WP Discourse comments.
in my functions.php I added this (but get error/see below):
// Customizes the comment_html template.
function my_wpd_comment_html( $input ) {
ob_start();
?>
<li class="comment <?php echo $even ? 'even' : 'odd'; ?> depth-1">
<article class="comment-body">
<footer class="comment-meta">
<div class="comment-author vcard">
<img alt="Avatar for {username}" src="{avatar_url}" class="avatar avatar-64 photo avatar-default"
height="24"
width="24">
<b class="fn"><a href="{topic_url}" rel="external"
class="url">{username}</a></b>
<span class="says screen-reader-text"><?php echo esc_html( 'says:', 'wp-discourse' ); ?></span><!-- screen reader text -->
</div>
<div class="comment-metadata">
<time datetime="{comment_created_at}">{comment_created_at}</time>
</div>
</footer>
<div class="comment-content">{comment_body}</div>
</article>
</li>
<?php
$output = ob_get_clean();
return $output;
}
// Hook into the function from the plugin's code.
add_filter( 'discourse_comment_html', 'my_wpd_comment_html' );
Edit: it works now!
However, I get an error 500. I don’t have display errors enabled. About to set up and do that now in a sandbox to see the syntax error. But wanted to post the code here in case it was an obvious fix.
Thanks