ZeuZ
Cross-browser testing

Cross Browser Testing on Chrome, Edge, Firefox & Safari

Cross browser testing in ZeuZ runs the same test on Chrome, Edge, Firefox and Safari without rewriting it, in parallel, on your own nodes or a browser cloud, from your pipeline. Pick the browsers at run time; the case does not change.

ChromeEdgeFirefoxSafariParallelYour nodes or a browser cloud
node-toronto-01atlas-crmrelease/2026.09
Run tests · checkout / smoke
41 cases in set
Browsers
✓Chrome✓Edge✓Firefox✓Safari
✓ node-toronto-01
✓ node-toronto-02
✓ node-mac-01 · parallel
Report · by browser
Complete
Chrome41 / 41 · 6m 21s✓ All passed
Edge41 / 41 · 6m 48s✓ All passed
Firefox41 / 41 · 7m 02s✓ All passed
Safari40 / 41 · 7m 39s✗ 1 failed
✗ TC-0873 · checkout.promo-banner — element not visible on WebKit Screenshot + trace
One case · browsers picked at run timerelease/2026.09
In one paragraph

Cross browser testing runs the same web test on several browsers and versions to confirm the application behaves and renders the same way for every user. ZeuZ does it by keeping one test case and choosing browsers at execution, running Chrome, Edge, Firefox and Safari in parallel on your own nodes or through a browser cloud, with a report per browser on one record.

Part of ZeuZ Test Studio · Chrome, Edge, Firefox and Safari, plus Android, iOS and the iOS simulator in the same run
The problem

Where cross browser testing breaks today.

The suite was written for Chrome, and the Safari run is a separate job someone owns on the side, so it runs last and rarely.

Browser clouds charge by the minute, so teams test three browsers on release day instead of four on every merge.

A failure on one browser is buried in a report with the other three, and the team cannot tell rendering from logic.

The six steps

How ZeuZ automates cross browser testing.

  1. 01Test designProposes which flows need every browser and which need one, from the changed files and the traffic those flows carry.
  2. 02Test case creationDescribe the flow once in plain English; the case has no browser in it.
  3. 03Test automationOne readable case with locators that use partial matching, parent and sibling context and shadow DOM, so they hold across engines.
  4. 04Test executionPick Chrome, Edge, Firefox and Safari at run time and run them in parallel across your nodes, from a schedule or a CI webhook.
  5. 05Reporting and analysisResults grouped by browser, with screenshot and trace per step, so a Safari-only failure reads as a Safari failure.
  6. 06Test maintenanceA locator that breaks on one browser comes back as a proposed repair applied to the one case, not four copies.

Your team reviews what ZeuZ produced. Nothing joins the suite or runs without a person accepting it.

See it in the demo lab or in your own environment

See it run on your application.

Watch the same test run across Chrome, Edge, Firefox and Safari, live.

What is covered

Cross browser testing tools that run where your suite runs.

ZeuZ runs web tests on Chrome, Firefox, Microsoft Edge and Safari, selected per run from the execution dialog, with Android, iOS and the iOS simulator available alongside them for the same set. Execution is parallel across the nodes you register, on your own machines, in your cloud or on a browser cloud; the documented integrations include BrowserStack, LambdaTest and Sauce Labs.

Test Studio's generated tests use Playwright across Chromium, Firefox and WebKit; classic ZeuZ web actions run on Selenium WebDriver. Locators hold across engines because they can match attributes partially and case-insensitively, walk parent, sibling and index relationships, and reach into shadow roots, which is why cross browser testing in ZeuZ means one case rather than one copy per browser. Every run returns to the set, branch and history, with a report per browser on one record.

Browsers
Chrome, Edge, Firefox, Safari
Engines
Playwright (Chromium, Firefox, WebKit) for Test Studio; Selenium WebDriver for classic actions
Execution
Parallel across your own nodes; browser clouds via BrowserStack, LambdaTest, Sauce Labs
Mobile web
Android, iOS, iOS simulator in the same run
Locators
Partial match, parent-sibling-index, shadow DOM
Triggers
Manual, schedule, CI webhook
Responsive breakpointsShadow DOM componentsProgressive web appsSafari-only regressions

Runs where your code is allowed to be.

SaaS

Hosted by ZeuZ, execution on your own machines.

On-premises

Point the client at your own server.

Air-gapped

Disconnected environments, scoped per engagement.

Runs inside Jenkins, GitHub Actions, Azure DevOps, CircleCI and Bitbucket; results into Jira, Slack and Teams.

Related capabilities

Works in the same suite as.

GUI testing

Image-based and OCR checks for the parts of a screen that have no DOM.

GUI testing →
Automated regression testing

The full suite on every merge, with locator breaks returned as proposed repairs a person approves.

Automated regression testing →
End-to-end testing

One case that crosses the browser, the API, the desktop client and the database.

End-to-end testing →

Read next: AI for progressive web apps →Related: Selenium alternatives →

FAQ

Questions about cross browser testing.

Ready to automate QA testing today?

See ZeuZ Test Studio write, run and repair tests against your own application code.

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