Gives users with content creating permissions the ability to preview their site in a responsive testbed.
As of April 2026, Responsive Page Tester is a WordPress test plugin with 20 active installations and a 4.6/5 rating from 10 reviews. It has been downloaded 14K+ times in total. Requires WordPress 3.1+ and PHP false+. Available on WordPress.org since 2013. Last updated 10 years ago — may have compatibility concerns. Top alternative: Quiz and Survey Master (QSM) – Easy….
Similar functionality has been developed for the Theme Customizer API and was merged into WordPress core as of version 4.5. This plugin will automatically deactivate when you install WordPress 4.5.
When viewing the front end of the site, a “Responsive” button is added to the WordPress Toolbar. Clicking that will toggle an overlay with your website presented in various sizes for easy responsive design testing.
This can be useful both during theme development, and when writing content to verify it will be presented properly.
This plugin is a heavily modified version of Matt Kersley’s Responsive Design Testing.
| WordPress | 3.1+ requiredTested up to 4.4.34 |
| PHP | false+ required |
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.