Does MainWP have Visual Regression Tests?

The Regression Testing add-on monitors Child Site source code changes after plugin, theme, or core updates. Compare HTML snapshots, review CSS/JS changes, and receive email notifications when changes exceed thresholds.

MainWP offers the Regression Testing add-on to detect visual and code changes on your child sites after updates.

What You’ll Learn

• What the Regression Testing add-on does
• Key features available
• How to get started

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What It Does

The Regression Testing add-on monitors changes in your child sites’ source code. It helps you spot unexpected modifications after plugin, theme, or WordPress core updates by comparing HTML snapshots between scans.

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Key Features

Feature	Description
HTML snapshots	Compare page source before and after updates
Change threshold	Set acceptable change percentage before notifications
Email alerts	Receive notifications when changes exceed thresholds
Flexible scheduling	Daily, weekly, twice monthly, or monthly scans
Auto-trigger	Run scans automatically after updates
CSS/JS tracking	Monitor changes to stylesheets and scripts
Custom pages	Monitor any page, not just the homepage

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Comparison Views

The add-on provides multiple ways to review differences:

• Raw HTML comparisons
• Rendered before/after views
• CSS/JS file changes (when tracking enabled)

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Get Started

For complete setup instructions and configuration options, see the Regression Testing documentation.

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Related Resources

• Regression Testing Add-on - Product page
• Manage Updates - Update management in MainWP
• Does MainWP Have Safe Updates - Update safety features