Enhances media library thumbnails by making them larger and replacing the bundled icons with scalable SVG versions.
Yes! Just go to Settings: Media and look for "Media Library Thumbnails".
Note that this will not appear if the size has been hardcoded (see next FAQ).
To set a custom size, add the line below to functions.php (or a plugin) and adjust the dimensions as needed.
add_image_size( 'mte_thumbnail', 300, 300, true );
You may need to rebuild your thumbnails: https://wordpress.org/plugins/ajax-thumbnail-rebuild/
Or install WP_Thumb so they can be generated on the fly: http://wordpress.org/plugins/wp-thumb/