Parallel Cross-Browser Testing

Run the same test across multiple browsers simultaneously

What is Parallel Cross-Browser Testing?

Parallel cross-browser testing lets you run the same test across multiple browsers (Chrome, Firefox, Safari) at the same time. Instead of running your test once in Chrome, then again in Firefox, then again in Safari, you run it once and get results from all browsers simultaneously.

This is not load testing. This is not multiple different scenarios. This is the exact same test, executed in parallel across different browsers, so you can see how your application behaves consistently (or inconsistently) across the web.

Why It Matters

Different browsers render HTML, execute JavaScript, and handle CSS differently. A button that works perfectly in Chrome might be broken in Safari. A form that validates correctly in Firefox might fail silently in Chrome. Without cross-browser testing, you're shipping blind.

Parallel cross-browser testing gives you cross-browser confidence:

See issues that only appear in specific browsers
Verify consistent behavior across all major browsers
Get results faster (parallel execution vs sequential)
No need to re-run tests manually for each browser

How It Works

When you enable parallel cross-browser testing:

You select which browsers to test (Chrome, Firefox, Safari)
Rihario creates separate jobs for each browser
Each browser runs the same test in parallel
You get separate results for each browser
Results are clearly labeled by browser (e.g., "Chrome results", "Firefox results")

Example:

You run a login flow test with Chrome, Firefox, and Safari selected. Rihario executes the same login steps in all three browsers simultaneously. You see three separate result sets, each showing how the login flow behaved in that specific browser.

Tier Availability

Starter

❌ Not available. Starter tier supports single-browser testing only (Chrome).

Indie

✅ Available. Choose any 2 browsers to run in parallel (e.g., Chrome + Firefox, Chrome + Safari, Firefox + Safari).

Pro

✅ Available. Run all 3 browsers (Chrome, Firefox, Safari) in parallel for complete cross-browser coverage.

ℹ️Upgrade

Need parallel cross-browser testing? Upgrade to Indie or Pro to unlock this feature.

Frequently Asked Questions

Why might Safari behave differently?

Safari uses WebKit, a different rendering engine than Chrome (Blink) or Firefox (Gecko). This can cause differences in CSS rendering, JavaScript execution, and form handling. Safari also has stricter privacy and security policies that may affect how your application behaves.

Why might results differ between browsers?

Different browsers have different implementations of web standards. A feature that works in Chrome might not work in Firefox due to:

CSS property support differences
JavaScript API availability
Form validation behavior
Cookie and storage handling
Security policy enforcement

What happens if a browser is queued?

If you're running multiple browsers in parallel and the queue is busy, some browsers may start immediately while others wait. The UI will show "X running · Y queued" so you know the status. Once a slot opens, the queued browser will start automatically.

Is this the same as load testing?

No. Parallel cross-browser testing runs the same test across different browsers. Load testing runs many instances of the same test to measure performance under load. These are completely different use cases.

Can I run different tests in different browsers?

No. Parallel cross-browser testing runs the same test across all selected browsers. If you need different tests for different browsers, you'll need to create separate test runs.