Most Useful Visual Regression Tools for WordPress

Most Useful Visual Regression Tools for WordPress


Visual regression testing is an important part of developing a WordPress website. It ensures that the design and functionality of the site remain consistent throughout its development. With the help of visual regression testing tools, developers can identify and fix any visual bugs or inconsistencies before they become a problem.

Don’t worry if you’re new to VRT – there are plenty of easy-to-use tools that integrate perfectly with WordPress sites. In this post we’ll introduce visual regression testing and review five fantastic options available now – let’s dive in!


VRT is a must to make sure that the visuals of your site are flawless and free from any bugs or changes. Normal functional tests may be insufficient to accurately identify minor visual glitches.

Visual Regression Testing helps you to monitor the progress of your website. The tool takes screenshots of all pages and then tests them again at regular intervals. This enables it to compare the changes that have taken place and notify you about any modifications that have been made.

VRT technology has the ability to detect a variety of items, such as:

  • Server Issues: Issues with servers, such as content not appearing correctly, can occur from time to time. However, there are strategies in place to help prevent and resolve these issues quickly and efficiently.
  • Code Changes: Alterations to the code can potentially cause inconsistencies or conflicts with the design elements, resulting in misalignments or overlaps.
  • API Integration: Incorrectly fetched API integrations can lead to a lot of issues and cause frustrations for the users. It is important to ensure that all your API integrations are fetching correctly for optimal results.
  • Responsiveness: Poor responsive design can be a problem for users with different-sized screens. If the layout of your website does not adjust as the screen size changes, it becomes difficult to access it from different devices.
  • Potential Risk: Making sure your website is free from potential loopholes and errors is critical & can have severe repercussions. Things such as links that don’t work or updates not properly done can lead to serious issues on your site, so they require attention.

Altering your WordPress site (e.g. updating core, themes, or plugins) can lead to potential mistakes. In order to protect yourself against this risk, it is important to take proper precautionary measures prior to making any adjustments. By implementing VRT tools onto our sites, we have an extra layer of protection against all kinds of errors; ensuring smooth running UX for visitors on every single page they explore. Thus, these kinds of tools can ensure that you maintain a good UX.

Important Factors

It’s important to choose the right visual regression tool for your website, and there are a few key factors you should keep in mind.

  • Programming Skills: Visual regression testing doesn’t have to be a tech-heavy endeavor. If you’re new to the game, there are plenty of automated tools available that make it much simpler than manually setting up and coding tests from scratch – perfect for non-coders!
  • False Positives: The best VRT tools will flag only actual site flaws—not visual changes that don’t damage the code.
  • Content: When choosing a VRT tool, one of the most important factors to consider is how often your interface changes. For instance, Static websites can usually get by with simple tools, while dynamic content might be better suited for more advanced capabilities.
  • Open-source: Open-source tools are free, but you may have to troubleshoot any problems yourself..
  • Price: Don’t get locked into long-term contracts that don’t accommodate scalability. Additionally, make sure your plan has sufficient resources to run successfully on your site.

By considering the factors above, you’ll be able to choose a visual regression testing tool that fits your needs best.

In this article, we will discuss five of the best visual regression testing tools for WordPress. We will look at their features, use cases, and how they can help make sure that your WordPress website looks perfect every time. So let’s get started!


VRTs – Visual Regression Tests is a powerful, user-friendly tool designed to find broken links and errors in WordPress websites. You can control Visual Regression Tests from inside the WordPress dashboard, without having to rely on external services.

The best part is that Visual Regression Tests is easy to install, it also operates automatically. Therefore, there’s no need for coding skills or ongoing maintenance—it just works!

When the plugin is activated on your site, it will take a snapshot of what that page looks like. Then, every day and whenever you update content—the test compares these two snapshots to see if anything has changed. If there is a discrepancy, you will receive an email notification. You can view the changes in the plugin’s Alert section.

Key Features

  • Get instant alerts by email to know the moment your package arrives.
  • GDPR compliance protects your customers’ privacy and personal information.
  • You can compare two screenshots at once by switching between Split Screen and Side-by-Side modes.


Screenster is the perfect solution for effectively and efficiently testing your UI. From detecting visual changes to recording site interactions, this powerful tool provides a wide range of features that help you optimize web actions quickly! Plus, with its advanced configuration settings, you can customize tests and exclude certain elements from comparison effortlessly.

And most importantly – Screenster works faster than other alternatives so it takes only 5-30 minutes to develop tests each month and just three hours in total per month maintenance time. Be aware though; using all these great benefits requires some server knowledge when setting up on either their cloud or local computer installation – there’s definitely a learning curve here!

Key Features

  • Automate and schedule tests to run at regular intervals.
  • Test your applications in a variety of local and offline environments.
  • The Team Portal allows you to collaborate efficiently with team members.


Percy is an automated visual testing tool created by BrowserStack. It’s a popular option, trusted by brands like Microsoft, Expedia, and Twitter—all of which use Percy to capture screenshots that can then be compared pixel-by-pixel against the baseline while highlighting any changes or bugs in your UI.

Percy is built for collaboration and teamwork. The platform creates visual reviews with comment sections so that team members can discuss projects together, and everyone on the team will be notified when a new project is started or updated. In short, Percy is an online platform that lets you create visual reviews and keep your team in the loop.

This tool was designed to slot right into your existing workflow, it can be integrated with test automation frameworks or even implemented directly within your application.

Key Features

  • Ignore specific areas of your page (such as the watermark) and use timed freezes to minimize false positives.
  • Test your page in different browsers, platforms, and screen sizes.
  • Take advantage of GDPR and CCPA compliance.


Wraith is a web page screenshot comparison tool developed by the BBC that uses headless browsers, image editing software, and Ruby to enable fast feedback for front-end changes.

Bug reduction is one of these features. Moreover, you can produce tests that target specific pages or CSS classes. However, new users may find Wraith too complicated because it requires installation and scripting knowledge.

You will receive a gallery.html file with image comparisons in a PNG-format diff package. Plus, you’ll be sent a data.txt file that shows the percentage of pixels on which changes were made.

Wraith is open-source and completely free.

Key Features

  • Switch between three options: a direct comparison, history mode, and a spider mode for crawling through sites.
  • Use Capture Mode to compare dynamic content.
  • Use Wraith across multiple web environments, including live websites and test/staging sites.


Have you heard of BackstopJS? It’s an open-source tool that can help make sure your web applications look the same on every device and browser. With it, you’ll be able to monitor changes over time with just a few clicks.

The setup requires some technical know-how though – such as installation and scripting in Resemble.js, CasperJS, and Phantom JS – but once set up its usage is super simple! You provide URLs, cookies, etc., then create reference screenshots which are continuously monitored for changes or inconsistencies by comparison; any amendments will show up within a visual report so there’s no need to worry about potential discrepancies slipping through the cracks anymore! Give BackstopJS a try today & keep your online presence looking sharp across all devices.

Key Features

  • Take your interactive web designs to the next level with Playwright and Puppeteer.
  • Global or local, BackstopJS is at your fingertips for all of your app needs.
  • And don’t worry about cross-platform issues – enjoy seamless rendering through Docker integration!


Overall, these visual regression testing tools for WordPress can drastically improve the speed and efficiency of website development. They enable teams to detect regressions immediately and correct them rapidly, creating a smoother user experience in the process. Don’t underestimate the power of visual regression testing: it’s an essential component for building and maintaining high-quality websites. Change is inevitable but with these tools, ensuring continuity across different versions of a site doesn’t need to be sacrificed. Get set up with a tool today and watch your workflow operations become smoother than ever before! If you have any questions or comments on the tools mentioned here, please let us know in the comments below – we love hearing from our readers!

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