What is a visual comparison tool?

A visual comparison tool captures a screenshot of your UI, compares it against an approved baseline image, and highlights what changed. SmartUI does this across browsers, operating systems, resolutions, and real devices, then uses its Visual AI engine to separate genuine UI regressions from rendering noise.

How does SmartUI avoid false positives?

Basic pixel diff tools flag every anti-aliased edge, font rendering variation, and timestamp change as a failure. SmartUI's Smart Ignore filters anti-aliasing artifacts, sub-pixel font differences, animation timing, and dynamic content such as timestamps and user-generated content before a diff reaches your review queue, reducing false positives by up to 95%.

Which frameworks does the visual comparison tool support?

SmartUI ships SDKs for Selenium, Playwright, Cypress, Puppeteer, WebdriverIO, and TestCafe. A single snapshot call adds visual comparison to a test you already run. You can also capture without a framework using the SmartUI CLI, or push images from any source through the Screenshot Upload API.

Can I compare a Figma design against the built page?

Yes. Import Figma frames with the SmartUI CLI and mark them as the baseline, then run your test suite to capture implementation screenshots. SmartUI compares the build against the design, so design-to-code drift surfaces on every run rather than during a manual design review.

Does it work in CI/CD?

Yes. SmartUI runs as a step in Jenkins, GitHub Actions, GitLab CI, CircleCI, Azure DevOps, Bitbucket Pipelines, and other major platforms, and emits JUnit XML so visual results appear alongside functional ones. With the GitHub integration, comparisons post as PR comments and a status check can block a merge until unapproved visual changes are resolved.

How is this different from Playwright or Cypress screenshot assertions?

Framework-native screenshot assertions do a raw pixel diff with no filtering, so every rendering difference fails the test. SmartUI adds AI noise filtering, change classification, root cause analysis, branch-based baselines, and a human approval workflow. Framework assertions suit simple single-browser cases; SmartUI is built for cross-browser visual testing at production scale.

How do baselines work across Git branches?

Each branch keeps its own baseline. A feature branch starts from a copy of its parent's baseline, and changes approved there do not touch main. When the branch merges, SmartUI merges the baselines and surfaces any screen both branches changed for manual resolution, the same way Git handles a merge conflict.

Can I run visual comparison on real mobile devices?

Yes. Capture screenshots on TestMu AI's real device cloud of 10,000+ real Android and iOS devices, then compare them in SmartUI. This validates how Safari on iOS and Chrome on Android actually render your UI, rather than a desktop browser emulating a mobile viewport.

Visual Comparison Tool That Catches Real UI Bugs

SmartUI compares every screen against its baseline across browsers and devices, and filters out rendering noise so only genuine visual regressions reach your review queue.

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Everything Your Visual Comparison Tool Should Do

AI-native comparison across browsers, real devices, Figma designs, and document output.

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SMART IGNORE

Test Like Humans Do

Smart Ignore filters anti-aliasing, font rendering, and dynamic content before you ever see a diff, cutting false positives by up to 95%.

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AI-native detection drops irrelevant layout shifts.
Timestamps, ads, and user content are ignored automatically.
Real regressions surface at the top of the review queue.

LAYOUT TESTING

Catch Layout Regressions

DOM-based layout testing compares element position, size, and hierarchy between builds, catching structural breaks a pixel diff never sees.

Run a Layout Test

Compare element position, size, and visibility across builds.
Validate responsive behaviour at each breakpoint.
Catch structural drift that renders identically but breaks a11y order.

DESIGN TO CODE

Compare Figma to Live UI

Import Figma frames as the baseline and compare them against the built page, so design-to-code drift is caught on every build instead of in review.

Compare a Design

Mark Figma frames as the baseline with one CLI command.
Diff the implementation against the approved design.
Ship the design that was signed off, not an approximation.

Visual Comparison Built for Every Surface You Ship

Visual Testing on Real Devices

Compare screenshots captured on real iOS and Android hardware, not an emulated mobile viewport.

Smart Baseline Branching

Every Git branch keeps its own baseline, so parallel feature work never collides on a shared reference.

PR Comments and Merge Gates

Comparison results post to the pull request, and a failing status check can block the merge.

Storybook Component Testing

Capture every component story so a shared-component regression is caught once, not across 50 screens.

Figma CLI

Pull Figma frames into SmartUI as baselines and validate the build against the approved design.

Smart RCA

Get a plain-English root cause and impact score for each change, not just a red and green overlay.

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AI-Agentic Quality Engineering

AI-native testing for every stage of your pipeline, from authoring to visual comparison to release.

Visual UI Testing

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Real Device Cloud

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Agent Testing

Accessibility Testing

Visual UI Testing

AI-native visual comparison that catches UI regressions across browsers and devices.

More about Visual Testing

Pixel Comparison

Detect visual deviations in layout, color, font, and element position.

Design-to-Dev

Compare Figma designs with live web pages and app screens to ensure accuracy.

Smart Ignore

Filter out irrelevant layout shifts with AI-native detection, reduce false positives.

Plug SmartUI into Your Test Framework

Add visual comparison to Selenium, Playwright, Cypress, Puppeteer, WebdriverIO, or TestCafe with one snapshot call.

Selenium

Run tests across browsers in Java, Python, JS, and more.

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Playwright

Cross-browser automation across Chromium, Firefox, and WebKit.

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Puppeteer

Headless Chrome and Chromium automation via Node.js.

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Cypress

End-to-end web app testing with real browser access.

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Appium

Automate native and hybrid apps on iOS and Android.

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Espresso

Native Android UI tests with built-in synchronization.

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XCUITest

Native UI test automation for iOS and macOS apps.

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Jest

Write and run JavaScript tests with built-in mocking and coverage.

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