Playwright vs Selenium: Which E2E Tool for CI?
Playwright brings modern speed and free parallelism; Selenium brings the widest language and browser coverage.
Playwright drives Chromium, Firefox, and WebKit out-of-process with built-in waiting and parallelism. Selenium (WebDriver) is the established standard across many languages, scaled via Grid.
| Playwright | Selenium | |
|---|---|---|
| Languages | JS/TS, Python, Java, .NET | Java, Python, C#, JS, Ruby, more |
| Browsers | Chromium, Firefox, WebKit | All major browsers |
| Parallelism | Built in, free | Selenium Grid |
| Auto-waiting | Built in | Manual waits common |
| Setup | Bundled browser installs | Drivers per browser |
In CI
Playwright’s built-in parallelism, auto-waiting, and bundled browser installs make CI fast and less flaky with little setup. Selenium’s strength is breadth - the most languages and the widest real-browser/device coverage, scaled with Grid - at the cost of more manual waiting and driver management. Both need browsers available in CI.
Flakiness
Playwright reduces timing flakiness via auto-waiting; Selenium usually needs explicit waits and is more prone to flake without them. Either way, retrying transient failures keeps a single flake from failing the build.
The verdict
Want modern speed, free parallelism, and lower flakiness: Playwright. Need the broadest language and real-browser coverage at scale: Selenium with Grid. Plan for flaky-test retries on both.