Enables high resolution Gravatar images on any browser that supports them.
HiDPI Gravatars is designed to be fully compatible with page caching plugins such as WP Super Cache.
Pages that were cached prior to activating HiDPI Gravatars will need to be refreshed. Empty the cache to make sure the new Gravatars will appear.
HiDPI Gravatars might not detect customized Gravatar functions in other plugins. If this is causing HiDPI Gravatars to miss pages that do have Gravatars on them, it will be necessary to add a line of code to your theme or plugin. For most websites this will not be necessary.
To forcibly trigger HiDPI Gravatars on a specific page, add this code at the appropriate place in your theme:
<?php define('MIQRO_HIDPI_THIS_PAGE', TRUE); ?>
Plugin authors: If you are not implementing the WordPress get_avatar filter, then you will need to add my code (as above) whenever a Gravatar is output. Either method should make your plugin compatible. Note, however, only the get_avatar filter is ajax compatible. Contact me if you need to use a different filter.
In any case, HiDPI Gravatars is not compatible with any Gravatar cache plugins.