Playwright vs Selenium
Playwright and Selenium are the two dominant browser automation frameworks. This guide compares them head-to-head — speed, language support, browser coverage, debugging, and which to pick — with code samples and a verdict you can act on in five minutes.
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Which one should you pick?
Pick Playwright if…
You're starting a new web project, your team writes JavaScript or TypeScript, and you want fast tests, auto-waiting and built-in tracing out of the box.
Pick Selenium if…
Your team writes Java, C# or Ruby, you need legacy browser support (Internet Explorer, older Safari), or you have an existing Selenium suite and a strong Page Object library.
You have separate frontend and backend test suites, you're migrating gradually, or you want Playwright for new code and Selenium for the long-tail of legacy browsers. TestingBot runs both on the same grid.
What are Playwright and Selenium?
Two frameworks, two philosophies. The same goal: drive a real browser to automate end-to-end testing.
Playwright
Released 2020 · Microsoft · Apache 2.0
Playwright is an end-to-end testing framework built by Microsoft that controls Chromium, Firefox and WebKit through a single API. It was designed by the team that originally built Puppeteer at Google, with cross-browser support and modern web app needs in mind.
It uses the browser's DevTools protocol (or its own bridge for Firefox/WebKit) instead of WebDriver, which lets it auto-wait for elements, intercept network traffic and capture rich traces by default.
- TypeScript / JavaScript / Python / Java / C# bindings
- Auto-wait, network interception, fixtures, traces
- Chromium, Firefox, WebKit · no IE / legacy Safari
Selenium
Released 2004 · Open Source · Apache 2.0
Selenium is the original browser automation framework and the foundation of the W3C WebDriver standard. Selenium WebDriver drives any browser through a vendor-supplied driver (chromedriver, geckodriver, safaridriver, edgedriver, IEDriverServer) using the same wire protocol.
Twenty years of ecosystem maturity means deep IDE integration, mature Page Object patterns, and bindings for every major language. Selenium 4 added Chrome DevTools support, BiDi events and bidirectional protocols.
- Java / Python / C# / Ruby / JavaScript / Kotlin
- W3C WebDriver standard — works with every browser
- Chrome, Firefox, Safari, Edge, IE 11 — full coverage
Playwright vs Selenium: side-by-side comparison
Across the dimensions that matter for picking, migrating or running both in CI.
| Dimension |
Playwright
|
Selenium
|
|---|---|---|
| First release | 2020 | 2004 |
| Maintained by | Microsoft | Open-source community + W3C |
| Languages | TS, JS, Python, Java, C# | Java, Python, C#, Ruby, JS, Kotlin |
| Browsers | Chromium, Firefox, WebKit | Chrome, Firefox, Safari, Edge, IE 11 |
| Mobile testing | Mobile emulation only | Real iOS + Android via Appium |
| Wire protocol | CDP + custom (Firefox/WebKit) | W3C WebDriver standard |
| Auto-waiting | Built in everywhere | Manual waits or WebDriverWait |
| Network interception | First-class API | BiDi (Selenium 4) or proxy |
| Multiple tabs / origins | Native — same context | Window switching API |
| Test runner | Built-in (@playwright/test) | Bring your own (JUnit, pytest, Mocha…) |
| Parallel execution | Built-in worker pool | Selenium Grid or test-runner level |
| Trace / replay | Built-in Trace Viewer | Screenshots + manual logs |
| Debugging | Inspector + UI mode | IDE + driver logs |
| Speed (typical suite) | ≈30–40% faster on Chromium | Mature, predictable |
| Ecosystem maturity | Growing fast since 2020 | 20 years of integrations |
| Page Object pattern | Supported, less common | Industry standard |
| Free for open source on TestingBot | ✓ | ✓ |
Speed numbers from public benchmarks; vary by application. Both frameworks run on TestingBot's cloud with identical APIs to local execution.
Filling a form, asserting the result
A login flow with auto-wait (Playwright) versus an explicit wait (Selenium). Both pass on the same TestingBot grid.
Playwright + TypeScript
login.spec.ts
// playwright.config.ts → set TestingBot endpoint import { test, expect } from '@playwright/test'; test('login redirects to dashboard', async ({ page }) => { await page.goto('https://app.example.com/login'); // auto-wait — no explicit wait needed await page.getByLabel('Username').fill('jane@example.com'); await page.getByLabel('Password').fill('••••••••'); await page.getByRole('button', { name: 'Sign in' }).click(); await expect(page).toHaveURL(/\/dashboard/); await expect(page.getByRole('heading', { name: /welcome, jane/i })).toBeVisible(); });
Selenium + Python
test_login.py
# Driver points at TestingBot remote URL from selenium import webdriver from selenium.webdriver.common.by import By from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.support import expected_conditions as EC def test_login_redirects_to_dashboard(driver): driver.get('https://app.example.com/login') driver.find_element(By.NAME, 'username').send_keys('jane@example.com') driver.find_element(By.NAME, 'password').send_keys('••••••••') driver.find_element(By.CSS_SELECTOR, 'button[type=submit]').click() # explicit wait WebDriverWait(driver, 10).until(EC.url_contains('/dashboard')) welcome = driver.find_element(By.TAG_NAME, 'h1') assert 'Welcome, Jane' in welcome.text
Both tests are pointed at the same Playwright / Selenium endpoint on TestingBot's cloud. Same browsers, same parallelism, same dashboard.
When to choose which
Choose Playwright when
- You're starting a green-field test suite, no migration cost to weigh.
- Your stack is JavaScript / TypeScript-first and you want the test runner that ships with the framework.
- You need network mocking, multi-tab flows, file uploads or geolocation overrides without bolt-on tools.
- You want trace-based debugging; record, save, scrub through a failed run frame-by-frame.
- Your target browsers are Chromium, Firefox and WebKit. No Internet Explorer 11 or older Safari requirement.
Choose Selenium when
- Your team writes Java, C# or Ruby — Playwright's bindings exist but the JS-first ergonomics get diluted.
- You need to test on Internet Explorer 11, older Safari, or unusual browser builds where only WebDriver works.
- You have a mature Page Object library, custom locators, or BDD framework (Cucumber, SpecFlow) you don't want to throw away.
- You're standardising across web AND real mobile devices. Selenium's API is the closest thing to a unified WebDriver story (with Appium for mobile).
- Stability and ecosystem maturity outweigh fewer features. Selenium has been battle-tested for 20 years.
Stop choosing — run both on the same grid
Point Playwright at the TestingBot endpoint, point Selenium at the same one, and your tests share the same 6100+ browsers and devices, the same dashboard, the same parallel slots and the same EU data residency.
- Same auth, same project, same billing
- Side-by-side test history for both frameworks
- Free for open source — both frameworks
command_executor='https://hub.testingbot.com/wd/hub'
)
Frequently Asked Questions
The questions teams ask before picking — or migrating between — these frameworks.
Is Playwright faster than Selenium?
Generally yes, on Chromium-based browsers. Typical suites run 30–40% faster on Playwright thanks to the DevTools protocol bypassing WebDriver's HTTP round-trips. The gap closes for Firefox and Safari (where Playwright uses its own bridges) and disappears once your tests are network-bound. Selenium 4's BiDi support narrows the gap further. For most teams the speed difference is real but not the deciding factor.
Should I migrate from Selenium to Playwright?
Only if the cost is justified. If your existing Selenium suite is stable, in a non-JavaScript language, and uses Page Objects extensively, migrating is rarely worth the effort. If your suite is flaky, JS-based and lacks tracing, Playwright's auto-wait and Trace Viewer alone usually pay for the migration. Pragmatic teams keep both: Selenium for what's already working, Playwright for new test suites.
Does Playwright support all browsers Selenium does?
No. Playwright supports Chromium (and Chrome/Edge by extension), Firefox and WebKit (which is close to Safari but not identical). Selenium drives the actual browser builds, including Internet Explorer 11, older Safari versions and rare browsers, using vendor-shipped drivers. If you need to test on IE 11 or a specific legacy Safari, Selenium is your only option.
Can Playwright test mobile apps?
Not natively. Playwright offers mobile browser emulation (you can simulate a mobile viewport and user agent in Chromium), but it cannot drive native iOS or Android apps. For real mobile app testing you need Appium, XCUITest, Espresso or Maestro. Selenium can drive mobile via Appium, which is built on the WebDriver protocol. TestingBot supports all of these on real iOS and Android devices.
Which is better for cross-browser testing?
For modern Chromium / Firefox / WebKit, Playwright's single API gives you faster, more reliable cross-browser runs out of the box. For comprehensive coverage including legacy browsers (IE 11, older Safari, Edge Legacy), Selenium is still the only option that drives the real browser binaries. Either way, running across many real browsers in parallel benefits hugely from using TestingBot's cloud. Both frameworks integrate with TestingBot's cloud with a one-line config change.
Do I need to learn JavaScript to use Playwright?
No, but Playwright's ergonomics are JS/TS-first. The Python, Java and C# bindings are first-class but lag the JS API on new features by weeks. If your team already writes Python or Java, Playwright is still a strong choice, but Selenium's binding parity makes it the more natural fit for non-JS stacks.
Can I run Playwright and Selenium on TestingBot?
Yes, both run on the same TestingBot cloud. Playwright connects via the wsEndpoint config to wss://cloud.testingbot.com/playwright, Selenium connects to https://hub.testingbot.com/wd/hub via webdriver.Remote. Tests show up in the same dashboard, share parallel slots, and benefit from the same EU data residency, video recording, live debugging and CI/CD integrations. Both are free for open source projects.
Going deeper? See the dedicated Playwright and Selenium pages.
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