Perform Layout Testing With SmartUI: Visual Validation Made Easy
Mythili Raju
Posted On: May 16, 2025
369 Views
3 Min Read
Web applications often face layout issues during code changes, where even small CSS or DOM changes can break UI elements. In such scenarios, layout testing can help ensure your web applications are free from layout inconsistencies.
Our SmartUI platform has now come up with a feature that allows you to perform layout testing using SmartUI SDK. This layout testing feature lets you capture and compare screenshots of web pages before and after code changes. It highlights pixel-level differences automatically, catching unexpected layout deviations.
What Is Layout Testing in SmartUI?
Layout testing in SmartUI focuses on testing the structure of your web application through DOM-based comparison.
It checks the DOM structure of the web application and then compares it across different build versions to identify layout regressions.
Benefits:
- Compare the web page structure between different versions of your app.
- Identify layout changes that can break how your web application works.
- Check if elements like buttons and menus are in the right place.
- Make sure the components of web applications are in the right place even after codebase changes.
- Reduce false positives caused by normal changes in colors, text, or images.
How Does Layout Testing Differ From Visual Testing?
Many teams already use visual testing, but struggle with false positives. Here’s why adding layout testing to your workflow makes a difference:
- Visual Testing: It captures screenshots and compares them visually. It flags any visual change, whether it’s colors, content, or images.
- Layout Testing: It analyzes the DOM structure and element relationships. It ignores content and style changes while focusing solely on structure.
However, it can produce many false positives with dynamic content.
It answers the question: “Does it look the same?”
This makes it perfect for validating structural integrity and is resilient to expected content variations.
It answers the question: “Is it structured the same way?”
Conclusion
With the addition of layout testing in SmartUI, we continue to provide the most comprehensive visual regression testing solutions for modern web applications.
Try layout testing with SmartUI today and add a powerful new layer to your visual regression testing process.
If you have any questions or need assistance, please use our in-app chat or email your queries to support@lambdatest.com.
Happy testing!
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