Stuart Bates

WP Responsive Images once activated automatically detects mobile devices viewing your website and serves up images of appropriate size 
by dynamically resizing images and caching them for improved performance.

WP Responsive Images

WP Responsive Images detects mobile devices and dynamically serves up smaller image sizes to improve page load times and user experience

Stefan Matei

Minimizes the comment list and turns the comments title (eg. “3 Comments”) into a trigger to view/hide the comments.
Requires no template hacking, only a knowledge of CSS selectors:
<ul>
<li>The comments are usually inside a list with a class of “.commentlist” so you probably won’t need to change the option for the “contents”.</li>
<li>The comments title however may be different on your theme so you may have to change the “trigger” option to something different than the “#comments-title” id. Use “Inspect element” on your post’s page to deterime the correct class or id of the element you want to be the trigger.</li>
</ul>

WP Responsive Images vs Minimizes Comments on Mobile