Plugin
PluginUpdated
MainWP Regression Testing Extension
MainWP Regression Testing Extension by MainWP is a plugin for people who manage several WordPress sites from the MainWP dashboard.
Product facts
- Version
- 5.2.1
- Released
- 24 July 2026
- Type
- Plugin
- Licence
- GPL
- Included in
- Every plan, or $4.19 / year on its own
Overview
Updates to plugins, themes or WordPress core can change how a site looks or behaves, and checking each site by hand takes time. This extension handles that check for you. It takes screenshots of your sites before and after an update, then compares them so even small visual differences come to your attention without manual inspection.
It works inside the MainWP dashboard, so you can run regression testing across many WordPress sites from one place. You can schedule tests to run after updates, adjust screenshot resolution and comparison sensitivity to suit each layout, and receive reports and notifications when something differs. That fits agencies and webmasters who want to catch problems before visitors do.
Features
- Before-and-after screenshots: The extension automatically captures screenshots of your sites before and after updates, giving you a visual record to check for changes that an update may have caused.
- Side-by-side comparison: Screenshots are shown next to each other with the differences highlighted, so you can pinpoint exactly where a page has changed instead of scanning it by eye.
- Works from MainWP dashboard: Regression testing runs through the MainWP dashboard, which lets you manage tests for multiple WordPress sites from a single control center.
- Scheduled testing: Set up automated tests to run after updates, so regular site checks happen without manual effort on your part.
- Adjustable test settings: Tailor the screenshot resolution and the comparison sensitivity to match each site's design and layout, so results fit the way the site is built.
- Reports and alerts: Receive detailed reports and notifications when issues are detected, so you can respond quickly to visual problems found after an update.
- Simple setup and management: The interface is intuitive to set up and manage, so users with limited technical skills can still run regression tests on their sites.
- Compatible with varied sites: The extension works with a variety of WordPress themes and plugins, which makes it usable across projects with different needs.
Best for
- Agencies managing many client WordPress sites in MainWP
- Webmasters who check sites by hand after updates
- Site owners wanting visual proof that updates broke nothing
Changelog
Version 5.2.1 — 23 July 2026
- Improved Improved internal notification scheduling and email handling infrastructure to enhance maintainability.
- Improved Improved performance by bulk-loading snapshot data for dashboard and result checks.
- Improved Refreshed accessible-sites cache after site add/remove and improved dashboard rendering behavior.
Earlier versions
- 5.2 (26 May 2026): 2 new, 3 improved, 1 fixed
- 5.1.4 (22 January 2026): 1 improved, 2 fixed
- 5.1.3 (15 January 2026): 2 new, 4 improved
FAQ
Is MainWP Regression Testing Extension free?
The code of MainWP Regression Testing Extension is licensed under the GPL, so anyone may use, change and share it. Buy GPL is a paid service: a plan or a purchase of MainWP Regression Testing Extension gives you the download and its updates. The developer's own support, licence key and online services are not included.
Which version of MainWP Regression Testing Extension is this?
Version 5.2.1, released 24 July 2026. New versions appear here when the developer publishes them.
How do I update MainWP Regression Testing Extension?
Install Buy GPL Updater on your site and paste your key from My Account. It installs new versions of MainWP Regression Testing Extension for you.







