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Cross-browser Testing

Test every browser combination without multiplying your test suite

Applitools renders your UI across hundreds of browser and device combinations at once with the Ultrafast Grid, an engine that reproduces each browser's rendering without spinning up a real one for every test. Visual AI then flags only the differences that would actually bother a user.

Catch browser-specific bugs

A layout that renders fine in Chrome can break in Safari. Visual AI compares what actually renders in each browser, so browser-specific bugs don't slip through.

Cut test flakiness

The Ultrafast Grid re-renders your UI using Visual AI instead of screenshotting a live browser, cutting test flakiness by up to 99%.

Expand browser coverage

Add a browser, viewport size, or OS to your test matrix with a few lines of configuration, not a new local device to set up and maintain.

How Visual AI makes cross-browser testing reliable

See exactly where a browser breaks your layout

Compare render, not just code
Visual AI checks what actually paints in each browser, not just whether the same code ran.

Catch rendering engine differences
Font rendering, flexbox quirks, and CSS support gaps between Chromium, WebKit, and Gecko show up as real, visible diffs.

Screenshot showing rendering diffs between Chrome and Firefox browsers in Autonomous

Trust every cross-browser result

Reproducible diffs
The same screenshot always passes or always fails on a given browser, so a failure means a real difference, not noise.

Ignore what doesn't matter
Anti-aliasing and sub-pixel rendering shifts between browsers get filtered out automatically, instead of failing your build.

Run your full browser matrix in minutes, not hours

Parallel execution across the grid
The Ultrafast Grid renders your UI across hundreds of browser and device combinations at once, instead of running your suite serially against each one.

Run in your existing framework
SDKs integrate directly with Playwright, Cypress, Selenium, and Appium, so cross-browser checks run in the same test you already wrote.

Add browser coverage without adding maintenance

No local browser lab to maintain
Test against browsers and OS versions you don't have installed, without standing up or updating a device lab.

Auto-maintenance across the matrix
When a change is intentional, update every affected baseline across every browser and device it touched, in one click.

What backs up every cross-browser result

1

Local AI processing

Visual comparisons run locally within your environment. Page snapshots are never sent to an external model or used for training.

2

Dynamic content handling

Choose the AI match level that works for you to decide what counts as a cross-browser bug, and let Applitools ignore dynamic content like ads or timestamps automatically.

3

Native Mobile Grid

Extend the same approach to native iOS and Android apps, rendered across real device and OS combinations.

4

Deterministic AI

The same input always produces the same output on every browser, every run, so a result is something you can explain and trust.

5

No-code and code authoring

Write cross-browser checks in plain English, record a flow, or write code directly, so the whole team can add coverage.

6

Root Cause Analysis

When a diff shows up on one browser, see the exact DOM and CSS change behind it, so you know if it's a real bug or expected browser behavior.

Customer Testimonials

“I love how Applitools has the smarts to ignore minor visual differences in your components, especially when testing on different browser types where it's easy for layouts to be off by a pixel.”

Kent C. Dodds
JavaScript engineer and creator of TestingJavaScript.com
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“Applitools has changed the way we approach QA, making us a faster, more consistent development team, as well as giving us more confidence in the quality of our product with every push to production.”

Alex Dinari
Senior Front-End Engineer
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"Applitools Ultrafast Grid integrates seamlessly with our testing framework and consists of everything I need to achieve comprehensive cross-browser coverage at the speed of a single test."

Omri Aharon
Frontend Team Leader
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Ready to check your app across all browsers and devices?

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