Automated Visual Testing with Selenium & Applitools

In the fast-paced world ofweb and mobile application development,
delivering a seamless user experience is just as important as
ensuring functional correctness. While traditional functionaltesting
focuses on verifying if buttons work, forms submit correctly, and
pages load as expected, it often overlooks a crucial aspect — how
things look on the screen. This is where visualtesting steps in.
Visualtesting goes beyond checking functionality; it ensures that
the application’s user interface (UI) appears as intended. It helps
detect visual bugs like misaligned elements, overlapping text,
incorrect fonts, broken layouts, or color inconsistencies — issues that
functional tests usually miss.
Imagine a scenario where a “Submit” button works perfectly, but due
SELENIUM WITH USING APPLITOOLS TESTAUTOMATION VISUALTESTING
AutomatedVisualTestingUsingSelenium
andApplitools
• •
BY QATEAM

to a CSS update, it’s now hidden behind an image. Functional tests
would pass since the button technicallyworks, but a real userwould
still face a broken experience. Visual testing catches these UI glitches
by comparing screenshots ofthe application against a baseline
(expected design) and highlighting even the smallest visual
differences.
With modern applications being responsive — adapting to different
devices and screen sizes — visualvalidation becomes even more
essential. It ensures a consistent and polished look across desktops,
tablets, and mobile devices. As users expect pixel-perfect interfaces,
integrating visual testing into yourtest automation strategy helps
prevent visual regressions and strengthens the overall quality ofyour
software.
Table ofContent
What is Visual Testing?
WhyTraditional Functional Testing Misses Visual Bugs?
HowVisual Testing Improves UI Consistency and User
Experience?
Introduction to Applitools: AI-Powered Visual Validation
HowApplitools Complements Selenium with Visual
Assertions
Howthe Integration Works:
What is Applitools Eyes?
Understanding Applitools Baselines in Detail
What is a Baseline in Applitools?
WhyAre Baselines Important?
Lifecycle of a Baseline in Applitools
Handling Differences – Approving or Rejecting
Changes
KeyAttributes That Define a Baseline

Test Name
Application Name
Viewport Size (Screen Resolution)
Environment (Browser & OS)
Why Combine Selenium with Applitools?
Limitations of Selenium forVisual Testing
UI Misalignments
Color and Font Mismatches
Overlapping or Hidden Elements
Cross-Browser Inconsistencies
Responsive Design Issues
Setting Up Selenium with Applitools
Pre-requisites
For Maven:
Advanced Applitools Features forVisual Testing
Applitools Match Levels
Exact Match (Pixel-by-Pixel Comparison)
Layout Match (Structure-Based Comparison)
Strict Match (Default & Balanced)
Content Match (Text-Based Verification)
Root Cause Analysis in Applitools
How Root Cause Analysis Works?
Batch Testing for Large-Scale Validation
How Does It Work?
Howto Enable Batch Testing?
Handling Visual Testing Challenges
Common Challenges in Visual Testing
False Positives in Visual Comparisons
Handling Dynamic Elements
Cross-Browser & Viewport Differences
Best Practices for Effective Visual Validation
Importance ofVisual Validation in Modern Web and Mobile
Applications
Conclusion:

What isVisualTesting?
Visual testing is a type of software testing that ensures the UI (User
Interface) ofan application appears correctlyto users across
different browsers, devices, and screen sizes. Unlike functional
testing, which verifies the logic and behavior of an application, visual
testing focuses on identifying visual defects such as misaligned
elements, font inconsistencies, broken layouts, or color mismatches.
For example, if a button shifts slightly due to a CSS change,
functionaltests maystill pass, but visual tests will detect the
discrepancy.
WhyTraditional FunctionalTesting
MissesVisual Bugs?
Functional testing tools like Selenium, Cypress, and Playwright are
excellent at verifying functionality—ensuring that buttons work,
forms submit correctly, and calculations return expected results.
However, they do not checkhowelements are displayed onthe
screen.
Here are a few limitations offunctionaltesting in detecting UI
issues:
Pixel-level UI issues go unnoticed (e.g., overlapping text,
incorrect font sizes).
Cross-browserinconsistencies are not caught (e.g., a layout
breaking in Safari but working fine in Chrome).
Dynamic contentvariations (ads, pop-ups) can disrupt
layouts, but functional tests won’t detect these subtle shifts.
Responsiveness issues (e.g., a menu displaying incorrectly on a
smaller screen) are ignored unless explicitly coded into tests.

Since functional testing tools focus on verifying DOM elements
and interactions, they missvisual defects that can degrade
the user experience.
HowVisualTesting Improves UI
Consistencyand UserExperience?
Visual testing tools like Applitools help maintain a consistent look
andfeel across all UI components. By incorporating AI-powered
visualvalidation, teams can:
Ensure UI Consistency: Detects unintended UI changes across
different screens, browsers, and devices.
IdentifyLayout Breaks Early: Find issues like hidden elements,
overlapping sections, or broken grids before they reach
production.
Improve DevelopmentWorkflow: Provide fast feedback to
designers, developers, and testers, reducing iteration cycles.
Enhance Brand Perception: A polished, visually accurate UI
increases customertrust and engagement.
Introduction toApplitools:AI-Powered
VisualValidation
Applitools Eyes is an AI-drivenvisualtesting platform that
extends Selenium’s capabilities by performing intelligent image-
based comparisons. Unlike traditional pixel-by-pixel comparison
tools, Applitools uses computervision andAI to identify true UI
defects while ignoring insignificant differences, such as anti-aliasing
or minor rendering variations.
KeyFeatures ofApplitools:

AI-PoweredVisual Comparisons: Detects even the smallest UI
differences while ignoring irrelevant rendering variations.
Baseline Image Matching: Stores reference snapshots
(baselines) and compares newtest runs to detect unexpected
UI changes.
Cross-Browserand Cross-DeviceTesting: Ensures a
consistent UI appearance across Chrome, Firefox, Edge,
Safari, mobile browsers, and native apps.
Smart Region Matching: Allows testers to ignore dynamic
content (such as timestamps, ads, or rotating banners) to avoid
unnecessarytest failures.
Auto-Maintenance and SmartTest Management: Uses AI to
categorize changes (intentional vs. unintentional), reducing
manualtest maintenance.
CI/CD and Cloud Integration: Seamlessly integrates with
Jenkins, GitHubActions,Azure DevOps, and otherCI/CD
tools for automated visual testing in pipelines.
HowApplitools Complements Selenium
withVisualAssertions
By integrating Applitoolswith Selenium, testers can extend
Selenium’sfunctionalteststo includevisualverification,
ensuring that both behaviorand UI appearance are validated.
Howthe Integration Works:
1. SeleniumAutomates UserActions – Selenium performs
functional steps such as opening a webpage, clicking buttons,
and submitting forms.
2. Applitools CapturesVisual Snapshots – After each significant
step, Applitools captures a screenshot ofthe entire page or
specific elements.
3. Applitools Comparesthe Screenshotswith Baselines – The

new image is automatically compared to the baseline snapshot
stored from previous test runs.
4. AI-PoweredAnalysis FlagsVisual Differences – If any
unexpected UI changes are detected, Applitools marks them for
review in the Test Manager dashboard.
What isApplitools Eyes?
Applitools Eyes is an advanced AI-powered platform fortesting
various user interfaces, including websites, web applications, native
mobile apps, documents, and media. Unlike traditional automation
tools that validate test scenarios mechanically, Applitools leverages
artificial intelligence to analyze thousands of UI elements and
scenarios instantly, mimicking human-like visual perception for more
accurate testing.
UnderstandingApplitools Baselines in
Detail
What is a Baseline inApplitools?
A baseline in Applitools is a reference snapshot ofyour
application’s UI. It serves as the expected appearance ofthe
application, and all future test runs are compared against it to detect
visual differences.
Unlike traditional assertion-based testing, which checks only
functional correctness, Applitools performs pixel-by-pixel
comparisons to catch visual defects, including layout shifts, color
mismatches, missing elements, and responsive design issues.
WhyAre Baselines Important?

UI Consistency: Verifies that your app maintains a uniform look
across different versions.
Visual Bug Detection: Captures unintended UI changes, such
as misalignments or missing elements.
Cross-BrowserCompatibility: Identifies differences in UI
rendering across different browsers and devices.
RegressionTesting: Ensures that new changes don’t break the
existing UI.
Lifecycle ofa Baseline inApplitools
The baseline lifecycle consists ofthree main stages:
FirstTest Run – Creatingthe Baseline
When you run an Applitools test forthe first time, it:
Captures a screenshot ofthe UI.
Saves this image as the baseline in the Applitools dashboard.
Stores metadata such as viewport size, browser, OS, andtest
name to ensure accurate comparisons in future runs.
Example: Suppose you are testing an e-commercewebsite where
the “Add to Cart” button is green. During the first test run, Applitools
captures and stores this design as the baseline.
Subsequent Runs – Comparing Screenshotswith Baseline
In latertest runs, Applitools:
Captures a newscreenshot ofthe webpage.
Compare it pixel-by-pixel with the saved baseline.
Highlights any differences (color changes, missing elements,
layout shifts, etc.).
Example: If a CSS update turns the “Add to Cart” button red,

Applitools detects the difference and flags it for review.
Handling Differences –Approving orRejecting Changes
When Applitools detects visual changes, the tester has three
options:
Acceptthe Change (Update Baseline)
Ifthe change is expected, approve the new screenshot as the
baseline.
Future test runs will now compare against this updated version.
Rejectthe Change (Bug Found)
Ifthe change is unexpected, report it as a UI bug.
Developers can fix the issue before pushing changes to
production.
Ignore Specific Differences (Dynamic Elements)
If elements like ads,timestamps, oruser-generated content
change frequently, you can mark them as dynamic regions to
avoid false positives.
Example: Ifthe “Add to Cart” button turns red instead of green due
to a design update, the tester can approve this as the new baseline.
But ifthe button disappears entirely, the testerwould reject the
change as a bug.
KeyAttributesThat Define a Baseline
Each baseline is uniquely identified using multiple attributes:
Test Name

Each visual test has a unique name assigned in Applitools.
Example: “Homepage Visual Test”
Application Name
Applitools associates baselines with a specific application to
avoid mix-ups between projects.
Example: “E-Commerce App”
Viewport Size (Screen Resolution)
Since UI elements may appear differently on different screen
sizes, the baseline is linked to a specificviewport size.
Example: 1920×1080, 1366×768, 375×667 (for mobile)
Environment (Browser& OS)
Baselines are tied to specific browsers and operating systems,
since UI rendering can vary across them.
Example: “Chrome 120 onWindows 11” vs. “Safari 17 on
macOS Sonoma“
WhyCombine SeleniumwithApplitools?
Selenium is one ofthe most widely used automation tools fortesting
web applications. It efficiently handles functionaltesting, verifying
whether an application’s elements and workflows behave as
expected. However, Seleniumfalls shortwhen it comestovisual
testing, as it focuses solely on DOM-based validations ratherthan
detecting UI inconsistencies.
This is where Applitools, an AI-poweredvisualtesting platform,
steps in. Applitools enhances Selenium by adding visualvalidation

capabilities, ensuring that applications not onlyfunction correctly
but also lookas intended across different browsers, devices, and
screen sizes.
Limitations ofSelenium forVisual
Testing
While Selenium is excellent at interacting with UI elements and
automating user actions, it has several limitations when it comes to
detectingvisual defects.
Here are some common visual issues that Selenium cannot identify
effectively:
UI Misalignments
Selenium verifies whether an element exists and is clickable, but it
does not check whetherthe element is properly aligned. Even small
shifts in the positioning ofbuttons,textfields, orimages may not
be detected by Selenium tests.
Colorand Font Mismatches
Selenium can check for specific CSS properties, but it cannot visually
validate colors,fonts, orshading. If a font rendering issue occurs in
certain browsers, Selenium won’t flag it as an error.
Overlapping orHidden Elements
If an element exists inthe DOM, Selenium assumes it is correctly
displayed. However, it cannot detect caseswhere elements are
hidden behind pop-ups, stickyheaders, orotherUI components.
This can cause serious usability issues for end users.

Cross-BrowserInconsistencies
Selenium supports cross-browsertesting, allowing testers to run
tests on different browsers. However, it does notvalidate howUI
components rendervisuallyacross different browsers.
Forexample, a button might appear correctly in Chrome but may be
slightly cropped in Safari due to rendering differences.
Responsive Design Issues
Selenium can simulate different screen sizes for responsive
testing, but it does not detect layout shifts, broken grids, or
missing elements that might occurwhen a webpage adapts to
different screen resolutions.
Setting Up SeleniumwithApplitools
Pre-requisites
Before integrating Applitools with Selenium, ensure you have the
following setup:
For more detailed instructions, visit our blog:TestAutomation:A
Beginner’s Guideto Seleniumwith Java andTestNG
Install Java Development Kit (JDK) (version 8 or later).
Set up the JAVA_HOME environment variable.
Verifythe installation using below command:
java -version
2. Installing SeleniumWebDriver

Download and setup Selenium WebDriverforyour preferred
browser (Chrome, Firefox, Edge, etc.).
Setting up Maven/Gradle (Optional but Recommended)
If using Maven, install Apache Maven and verifywith:
mvn -version
If using Gradle, install Gradle and verifywith:
gradle -version
3. AddingApplitools Dependency
To use Applitools Eyes SDK with Selenium, add the following
dependencies based on your build tool.
ForMaven:
Add this to your pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>visual-testing</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>test</scope>

</dependency>

<dependency>
<groupId>com.applitools</groupId>
<artifactId>eyes-selenium-java5</artifactId>
</dependency>

<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
</dependency>

<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>io.github.bonigarcia</groupId>
<artifactId>webdrivermanager</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

4. Setting UpApplitoolsAPI Key
Applitools requires an API keyfor authentication. Followthese steps:
1. GettheAPI KeyfromtheApplitools Dashboard:
Sign up/log in to Applitools.
Navigate to Account Settings → API Key.
Copythe API key.
2. ConfiguringtheAPI KeyintheTest Script:
You can set the API key in yourtest script as follows:
Eyes eyes = new Eyes();
eyes.setApiKey("YOUR_APPLITOOLS_API_KEY");
5. Integrating SeleniumwithApplitools Below is a basictest
script that integrates Applitools with Selenium forvisual testing.
import com.applitools.eyes.RectangleSize;
import com.applitools.eyes.TestResults;
import com.applitools.eyes.selenium.Eyes;
import com.applitools.eyes.selenium.fluent.Target;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
public class homePageVisualTestDemo {
private WebDriver driver;
String apiKey = "YOUR_APPLITOOLS_API_KEY";
@Test
public void testVisualValidation() {
System.out.println("Test Started");
Eyes eyes = new Eyes();

ChromeOptions options = new ChromeOptions();
driver = new ChromeDriver(options);
eyes.setApiKey(apiKey);
try{
driver=eyes.open(driver,"Lambdatest","Verify That
LambdatestHome Page", new RectangleSize(1024, 768));
driver.manage().window().maximize();
driver.get("https://ecommerce-
playground.lambdatest.io/");
eyes.checkWindow("Homepage");
eyes.check("Homepage",
Target.window().ignore(By.id("dynamic-ad")));
eyes.check("Homepage",
Target.window().ignore(By.id("timestamp"), By.className("animated-
banner")));
TestResults results = eyes.close(false);
if (results.isPassed()){
System.out.println("Test Passed");
}else{
System.out.println("Test Failed");
}
driver.quit();
}finally {
eyes.abortIfNotClosed();
}
}
}
Explanation ofthe Code:
Importing Required Libraries
com.applitools.eyes.TestResults: Stores the results ofthe
visual test.
com.applitools.eyes.selenium.Eyes: Applitools SDK class to
perform visual testing.
org.junit.Test: Marks the method as a test case using JUnit.
org.openqa.selenium.WebDriver: WebDriver interface for
browser automation.

org.openqa.selenium.chrome.ChromeDriver: Chrome
browser automation.
org.openqa.selenium.chrome.ChromeOptions: Allows
setting Chrome browser options.
DeclaringWebDriverandAPI Key
JUnit Test Method forVisual Validation
@Test: Marks testVisualValidation() as a JUnit test method.
System.out.println(“Test Started”); → Prints a message
when the test starts.
InitializingApplitools Eyes andWebDriver
Eyes eyes = new Eyes(); → Creates an instance ofApplitools
Eyes forvisual testing.
ChromeOptions options = new ChromeOptions(); →
Initializes Chrome browser options.
driver = new ChromeDriver(options); → Launches the
Chrome browser.
eyes.setApiKey(apiKey); → Sets the Applitools API keyto
authenticate the test session.
Openingthe BrowserwithApplitools Eyes
eyes.open(driver, “Lambdatest”, “VerifyThat Lambdatest
HomePage”);
Links the Selenium WebDriverwith Applitools forvisual
testing.
“Lambdatest” → Application Name (grouping oftests).
“VerifyThat Lambdatest HomePage” → Test Name.
NavigatingtotheWebpage
driver.manage().window().maximize(); → Maximizes the
browserwindow.
driver.get(“https://ecommerce-playground.lambdatest.io/”);
→ Navigates to the Home page.
PerformingVisualValidation
eyes.checkWindow(“Homepage”);
Captures a screenshot ofthe current page.
Compare it with the baseline image stored in Applitools.
“Homepage” → Label forthe captured screenshot.

ClosingApplitools Eyes and EvaluatingTest Results
TestResults results = eyes.close(true);
Closes the Applitools Eyes session.
Returns test results for comparison with the baseline.
results.isPassed()
Checks ifthere were no visual differences detected.
Prints “Test Passed” ifthe UI matches the baseline.
Prints “Test Failed” ifApplitools finds unexpected UI
changes.
ClosingWebDriverand Handling Exceptions
driver.quit(); → Closes the browser aftertest execution.
finally { eyes.abortIfNotClosed(); }
Ensures that Applitools Eyes session is properly closed,
even if an error occurs.
[Baseline Image]
[Exactly Match image]
AdvancedApplitools Features forVisual
Testing
Applitools Match Levels
Applitools provides multiple match levels to customize howvisual
differences are detected. These help reducefalse positives caused
by dynamic content while ensuring critical UI changes are caught.
Exact Match (Pixel-by-Pixel
Comparison)

Compares images pixel-by-pixel to detect even the smallest
difference.
Bestfor: Static web pages where every pixel should remain
unchanged.
Downside: Can generate false positives if dynamic content (e.g.,
timestamps, ads) is present.
Example Use Case:
Comparing a static bannerimage on an e-commerce
homepage.
Layout Match (Structure-Based
Comparison)
Ignores content changes (text, numbers, images) and only
verifies element positioning.
Bestfor: Pages where dynamic content updates but the layout
must remain unchanged.
Downside: Won’t detect text or image differences.
Example Use Case:
Checking the structure of a newswebsite where headlines
update frequently.
Strict Match (Default & Balanced)
Detects both pixel-level differences and structural changes.
Uses AI-poweredvisual analysis to reduce false positives.
Bestfor: General UI validation where minor content changes are
acceptable.
Example Use Case:

Validating a login page where button alignment matters, but
slight text changes are allowed.
Content Match (Text-BasedVerification)
Ignores styling and positioning but validates textual content.
Bestfor: Ensuring important text remains unchanged while
allowing design flexibility.
Example Use Case:
Checking an invoice page where only amounts and descriptions
should be verified.
Root CauseAnalysis inApplitools
When a test fails, Applitools doesn’t just highlight differences—it
helps pinpoint why they occurred.
HowRoot CauseAnalysis Works?
1. HighlightsVisual Differences – Displays changes between
baseline and the new UI.
2. CSS & DOM Comparison – Shows which CSS properties or HTML
elements have changed.
3. Dynamic Content Detection – Identifies if a failure is due to
expected dynamic content or an actual bug.
Example Use Case:
A button has moved slightly due to a CSS update. Applitools will
showthe CSS change (e.g., margin-left modified).
Benefit: Saves time by pinpointing exact UI differences
without manually comparing screenshots.

BatchTesting forLarge-ScaleValidation
Instead of running onetest at atime, Applitools supports batch
testing—allowing multiple test cases to execute simultaneously.
HowDoes It Work?
Groups multipletest runs together and evaluates them in a
single batch.
Reduces executiontime by running parallel tests.
Helps maintain consistency across different environments
(browsers, devices).
Example Use Case:
Running 100+ UItests across Chrome, Firefox, Safari, and
Edge.
Howto Enable BatchTesting?
BatchInfo batch = new BatchInfo(“Regression Suite”);
eyes.setBatch(batch);
Benefit: Large-scale UI validation becomes faster and more efficient.
HandlingVisualTesting Challenges
Visual testing comes with unique challenges, such as false
positives, dynamic content,viewport inconsistencies, and cross-
browserissues. Addressing these effectively ensures accurate UI
validation without unnecessaryfailures.

Common Challenges inVisualTesting
False Positives inVisual Comparisons
Issue: Tests fail due to minor, non-impactful UI differences (e.g.,
dynamic content, timestamps, minortext changes).
Solution:
Use Applitools Match Levels (Layout Match, Content Match) to
reduce noise.
Define regions for dynamic elements like ads, rotating banners,
and live updates.
Use Root CauseAnalysis to determine whether differences are
significant.
Example Fix (Ignoring Dynamic Elements)
eyes.check(“Page with Dynamic Content”,
Target.window().ignore(By.className(“timestamp”)));
Handling Dynamic Elements
Issue: Elements like pop-ups, banners, and animations cause
inconsistent test results.
Solution:
Ignore dynamic elements using ignore() regions.
Use timeouts ordelays to capture a stable UI state.
Capture snapshots afteranimations have completed.
Example Fix (Handling DynamicAds)
eyes.check(“Blog Page”, Target.window().ignore(By.id(“ad-banner”)));
Cross-Browser&Viewport Differences

Issue: UI may appear differentlyacross browsers, resolutions, and
devices.
Solution:
Run tests across multiple browsers and differentviewport
sizes.
Use Applitools’ ViewportTesting to ensure UI consistency.
Adjust CSS breakpoints to maintain a responsive layout.
Example Fix (ViewportTesting)
eyes.open(driver, “MyApp”, “Responsive Test”, new
RectangleSize(1200, 800));
SlowTest Execution in Large Suites
Issue: Running visual validation for hundreds of pages takes too
muchtime.
Solution:
Use BatchTesting to run multiple tests in parallel.
Integrate Applitools with CI/CDtools (Jenkins, GitHub Actions).
Use smart baselines to avoid unnecessary comparisons.
Example Fix (Batch ProcessingforSpeed)
BatchInfo batch = new BatchInfo(“Regression Suite”);
eyes.setBatch(batch);
Best Practices forEffectiveVisual
Validation
Usethe Right Match Level: Choose between Exact, Strict,

Layout, or Content Match.
Ignore Unstable Elements: Exclude dynamic content to reduce
false positives.
Leverage Baselines Efficiently: Review and update baselines
carefully.
RunTests on MultipleViewports: Ensure UI consistency across
devices.
Integratewith CI/CD Pipelines: Automate tests to detect
visual regressions early.
Importance ofVisualValidation in
Modern Web and MobileApplications
As digital experiences become more UI-driven, visual validation has
become critical in ensuring high-quality user interfaces. Users
expect seamless, responsive, and aesthetically consistent
applications across all devices.
Here’s why visualvalidation is essential:
Enhances UserExperience (UX): A broken UI leads to frustration
and higher bounce rates. Visual testing ensures that the application
looks consistent across platforms.
Cross-Browser& Cross-Device Compatibility: Aweb application
might look perfect on Chrome but breakon Firefox due to
rendering differences. Visualtesting helps maintain uniformity
across all environments.
Prevents Regressions: A minor CSS or layout change can
unintentionally affect multiple pages. Visual testing prevents
unexpected UI regressions after code updates.
Reduces Manual Effort: Traditionally, QAengineers manually

checkUIs, which is time-consuming and prone to human error.
Automated visual testing tools speed upthe process while
improving accuracy.
Conclusion:
Visual testing has become a crucial aspect of modern test
automation, ensuring that applications not onlyfunction correctly
but also maintain a consistent and user-friendly UI. While Selenium is
highly effective forfunctional testing, it falls short in detecting subtle
UI discrepancies such as misalignment, styling issues, or layout
shifts. Applitools enhances Selenium by leveraging AI-powered visual
validation, automatically comparing UI snapshots against baselines to
identify unintended changes. By incorporating match levels such as
Strict Match, Layout Match, and Content Match, Applitools provides
flexible verification options, reducing false positives and improving
test reliability. Features like Root Cause Analysis help teams quickly
debug UI regressions, while Batch Testing and Viewport Testing
enable large-scale and responsive UI validation across multiple
devices and screen sizes.
Integrating Applitools with CI/CD pipelines further strengthens the
automation process, allowing teams to run visual tests seamlessly
within Jenkins, GitHub Actions, orAzure DevOps to catch UI issues
early in development. The abilityto handle dynamic elements, self-
maintain baselines, and streamline test execution makes Applitools a
powerful tool for ensuring UI consistency across different browsers
and devices. As AI-driven visual testing continues to evolve, it will
play a critical role in reducing manual efforts, improving test
efficiency, and enhancing overall software quality. By combining
Selenium’s automation capabilities with Applitools’ intelligent visual
validation, teams can build robust, reliable, and visually perfect
applications in an increasingly dynamic digital landscape.

Visual testing with SeleniumAShot enhances UI validation by
detecting unintended visual regressions. By
integrating ExtentReports, teams can generate detailed reports
with image comparisons, making debugging easier. Following best
practices like threshold-based comparison, baseline image
management, and dynamic element masking ensures stable and
reliable visual test automation.
Witness howourmeticulous approach and cutting-edge
solutions elevated qualityand performanceto newheights.
Beginyourjourneyintotheworld ofsoftwaretesting excellence.
To knowmore referto Tools &Technologies & QAServices.
Ifyouwould liketo learn more aboutthe awesome serviceswe
provide, be sureto reach out.
HappyTesting 🙂
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