Bart Kuijper

When displaying a post or comment with avatars enabled, WordPress will always check for the existence of a Gravatar. (Note: even the default avatars ‘mystery person’ and ‘blank’ are in fact Gravatars served from gravatar.com.) WordPress does this by sending an MD5 hash of every displayed post or comment author’s email address to gravatar.com. Even with many plugins that introduce locally stored default or user avatars, this check still happens. On top of that, some themes or plugins force (Gr)avatars to load even if the display of avatars is disabled completely in WordPress’ settings. If for whatever reason you do not wish for Gravatar to receive these requests (which some people have voiced GDPR concerns about), this plugin is for you.
The way it works is every time WordPress attempts to display an avatar, this plugin first checks if the image is about to be retrieved from gravatar.com. If it is, the URL is changed to the locally stored ‘mystery person’ image (included with this plugin). If the avatar has any other source, this plugin doesn’t interfere.
Gravatars are also removed from the Discussion page in Settings and replaced with the locally stored ‘mystery person’ image. Again, any non-Gravatar images are left alone.
Upon activation of this plugin, if a Gravatar is selected as the default avatar, that setting is changed to the locally stored ‘mystery person’ image. If any non-Gravatar avatar is selected, that setting isn’t changed.
Upon deactivation of this plugin, if the locally stored ‘mystery person’ image is selected as the default avatar, that setting is changed to the Gravatar logo. If any non-Gravatar avatar is selected, that setting isn’t changed.

Redirect Gravatar requests

All requests to load an avatar from gravatar.com are redirected to a local image, preventing Gravatar from potentially gathering data about your site  …

WPVerwalter

Harry Milatz

Accelerates the site speed by simply and effective caching Gravatars (Globally Recognized Avatars) so that they are delivered from the own web server and do not need to be reloaded from the Gravatar server.
NEW feature: Other Avatars, e.g. from a “social login” plugin for comments are cached in version 1.3.0 and above.
NEW feature: Avatars from captured Facebook comments with a plugin like “Facebook Comments Importer” are cached in version 1.4.0 and above. The cache have to be emptied once after update.
NEW feature: Avatars from the plugin “Wapuuvatar” are cached in version 1.4.3 and above.
NEW feature: The plugin is now ready for Multisite in version 1.5.0 and above.
NEW feature: The plugin is now ready for being used with “Avatar Manager” in version 1.5.1 and above.
NEW feature: The plugin is now ready for being used with “Jetpack’s Author Widget” in version 2.0.0 and above.
<h4>Features</h4>
You can:
<ul>
<li>change the Gravatar Size</li>
<li>add a second Gravatar Size</li>
<li>change the cachetime</li>
<li>change the option how the Gravatars will be copied to your server</li>
<li>update the options depending on the server configuration</li>
<li>build the cache in the backend and see the cached images in all cached sizes</li>
<li>empty the Cache</li>
<li>get the size to use for the Gravatars from your template or set the size manually</li>
<li>You see a statistic how many files are cached and the filesizes of the files.</li>
<li>change the output file from a JPG-Image to a PNG-Image</li>
</ul>
<h4>Translations</h4>
<ul>
<li>English (US) – <a href="https://profiles.wordpress.org/harry-milatz/" rel="nofollow ugc">Harry Milatz</a></li>
<li>English (UK) – <a href="https://profiles.wordpress.org/harry-milatz/" rel="nofollow ugc">Harry Milatz</a></li>
<li>German – <a href="https://profiles.wordpress.org/harry-milatz/" rel="nofollow ugc">Harry Milatz</a></li>
<li>German (formal) – <a href="https://profiles.wordpress.org/harry-milatz/" rel="nofollow ugc">Harry Milatz</a></li>
<li>Spanish (Spain) – <a href="https://profiles.wordpress.org/wpverwalter/" rel="nofollow ugc">WPVerwalter</a></li>
<li>German (Switzerland, Informal) – Pascal Krapf</li>
<li>German (Switzerland) – Pascal Krapf</li>
</ul>
Harrys Gravatar Cache now supports WordPress.org language packs. Want to translate Harrys Gravatar Cache? Visit <a href="https://translate.wordpress.org/projects/wp-plugins/harrys-gravatar-cache/" rel="nofollow ugc">Harrys Gravatar Cache’s WordPress.org translation project</a>.

Harrys Gravatar Cache

By default, WordPress pings gravatar for an updated image. How often do people change their image? Probably, once a month. So, one doesn't need calls to gravatar every 5 minutes. Go ahead and install this plugin. Your visitors will be happy with the speed of your site!

Thanks Harry for your time on creating and maintaining this plugin.

If you care about your users, use this plugin

Accelerates the site speed by simply and effective caching Gravatar (Globally Recognized Avatars).

Redirect Gravatar requests vs Harrys Gravatar Cache