Responsive Performance in Drupal 7

One of the issues we face in responsive theming is on-browser performance across multiple devices. Responsive themes are inherently more taxing on rendering engines, but once we add to the page all the interactive bells and whistles (ex: sliding banners, videos, flying objects) we might be setting the browser up for a serious impact on rendering.

John Hannah at Friendly Machine wrote an in-depth look at this issue, and offers some solid advice in the field of responsive performance:

Drupal Override: Understanding Themable Output

Drupal Theming is hard enough when it comes to dealing with CSS & browser rendering issues. On the other end, for programmers the code templating process can be powerful and convenient once we get the hang of Drupal’s theming system.

A community documentation page at offers a good introductory overview of themable output, covering the basics of data source and overrides:

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