Question 1

Why do we test websites on different browsers?

Accepted Answer

We test websites on different browsers to check whether the website works as intended across all possible combinations of browsers, OS, devices, and resolutions. Cross-browser testing helps you ship user-friendly and browser-agnostic websites.

Question 2

How do I run a test script in multiple browsers?

Accepted Answer

With TestMu AI you get access to 3,000+ browser and OS combinations. Sign up, select your browsers, provide your URL, and run Selenium, Cypress, or Playwright scripts in parallel on the automation cloud across Chrome, Firefox, Safari, and Edge.

Question 3

How do I test a website in multiple browsers?

Accepted Answer

Start with the browsers your own analytics show, then widen from there. Sign in, pick a browser and OS pairing, and enter your URL to open a live session. Work through the flows that matter most, usually navigation, forms, and checkout, and open DevTools in the session when something renders differently. Screenshots and session video are captured as you go, so a bug report carries the exact browser, version, and OS it happened on. Once a flow is stable, move it into an automated suite and run the same checks across browsers in parallel.

Question 4

How to test websites on different browsers remotely?

Accepted Answer

A cloud browser platform runs the browser on a remote machine and streams it to your screen, so you can check a page from any laptop without installing anything. TestMu AI provides 3,000+ browser and OS combinations this way, including Safari on macOS and iOS from a Windows machine. If the site is not publicly reachable yet, an encrypted tunnel connects the remote browser back to your localhost or staging environment, so remote testing works before anything is deployed.

Question 5

Is it necessary to test the website on several browsers?

Accepted Answer

Yes, because browsers do not share one rendering engine. Chrome, Edge, Opera, and Brave run on Blink, Firefox runs on Gecko, and Safari runs on WebKit. Code that behaves correctly on one engine can break on another, most often in form controls, date and time inputs, video playback, and newer CSS features that ship on different schedules. Testing only in the browser you develop in means you are really only checking one of the three engines your users are on.

Question 6

Which browsers should I test my website on?

Accepted Answer

Start with your own analytics, then read the list by engine rather than by browser name. Per Statcounter, Chrome, Edge, Opera, and Samsung Internet all run on Blink and together account for roughly 78% of worldwide browser traffic, so adding Edge after Chrome tells you very little. Safari is the bigger gap at 16.47%, and it is worth checking on both macOS and iOS.

Question 7

How do I view my website in another browser?

Accepted Answer

Start a live interactive testing session, pick any browser from 3,000+ combinations, enter your URL, and you are looking at your site in seconds. You can use native DevTools, take screenshots, mark bugs, and share the session with your team.

Question 8

Can I check my localhost in different browsers?

Accepted Answer

Yes. An encrypted tunnel routes traffic from the cloud browsers to your machine, so you can check localhost, staging, and internal environments in different browsers. No public URL, port forwarding, or firewall changes are required.

Question 9

What is testing on different browsers called?

Accepted Answer

It is called cross-browser testing. The term covers checking that a site renders and behaves consistently across browsers, browser versions, operating systems, and screen sizes. You will also see it called browser compatibility testing. In practice it splits into two habits: live testing, where you interact with the page yourself in a real browser, and automated testing, where a script runs the same assertions across many browsers in parallel.

Question 10

Why is it important to test your site in multiple browsers?

Accepted Answer

Because a rendering bug you cannot see still costs conversions. A checkout that fails only in Safari, or a date picker that will not open in Firefox, quietly removes that share of your traffic without ever showing up in your own browser. Cross-browser testing catches those failures before release rather than through support tickets, and because every session records the browser, version, and OS, a developer can reproduce the issue straight away instead of asking which setup it broke on.

Question 11

How can I test on different browsers for free?

Accepted Answer

TestMu AI has a free-for-life plan with live interactive cross-browser testing for a limited number of minutes each month, plus 100 lifetime minutes of automation testing. No credit card is required. You can also run a quick check in a web browser online.

Question 12

Can I change device or browser without restarting the session?

Accepted Answer

Yes. The Switch control changes the browser, browser version, operating system, or device mid-session without closing the environment, so you keep your place when checking the same page across several configurations.

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