After spending years with Selenium and more recently adopting Playwright in production, I’ve formed strong opinions on when to use each. Here’s my honest take.

The Speed Difference (I Measured It)

Playwright’s fundamentally different. Selenium sends HTTP requests (WebDriver protocol) to a remote browser. Playwright opens a direct connection via Chrome DevTools Protocol. That’s like sending emails vs. picking up the phone.

When I migrated a test suite from Selenium to Playwright, test runtime dropped from 45 minutes to 12. Same tests, same server, just faster by wiring. Here’s why:

  • No HTTP round-trips — Playwright talks directly to the browser’s internals
  • Auto-waiting — Playwright waits before you interact. Selenium makes you wait manually, usually with brittle sleeps
  • Parallel contexts — Playwright can spawn 10 browser windows from one browser instance. Selenium needs 10 separate browsers
// Playwright auto-waits before interacting with elements
var page = await browser.NewPageAsync();
await page.GotoAsync("https://example.com");
await page.ClickAsync("#login-button"); // Automatically waits for clickable state

// vs Selenium — explicit waits needed
driver.FindElement(By.Id("login-button")).Click(); // May throw if not ready

Multi-Browser Support

Both tools support Chrome, Firefox, and Edge, but Playwright also bundles browser binaries — no more managing WebDriver versions.

Feature Playwright Selenium
Chrome/Edge ✅ ✅
Firefox ✅ ✅
WebKit (Safari) ✅ (bundled) ⚠️ (limited)
Mobile emulation ✅ Built-in ⚠️ Appium required
Auto-waiting ✅ ❌ Manual

When Selenium Still Wins (The Hard Truth)

I wish Playwright won everywhere. But here’s where Selenium still has the edge:

  1. Legacy codebases — You’ve got 500 Selenium tests, 3 years of edge cases baked in. Rewriting that is a 6-month project. The math doesn’t pencil out for most teams. Selenium still works — stick with it unless you’re rebuilding.

  2. Language support — Selenium has Ruby, Kotlin, PHP. Playwright is JavaScript-focused (TS/JS natives, with .NET and Python coming along). If your team codes in a minority language, Selenium’s your pick.

  3. Community — Selenium’s been around since 2004. The talent pool is bigger. If you need to hire someone next month, “Selenium experience” is a wider net than “Playwright.” Unfair but true.

  4. Grid infrastructure — Selenium Grid is battle-tested at scale. You can run thousands of tests across a grid of machines. Playwright’s parallel approach is newer (and faster per-machine, but different architecture).

My Recommendation (After Living Both)

New project? Playwright. No question. Speed, reliability, developer experience — all superior. You’ll write faster, debug easier, sleep better at night.

Existing Selenium suite? Don’t migrate for migration’s sake. But when you touch that code next, ask: “Does this need to be Selenium?” If you’re rewriting a module, consider Playwright for the new stuff. Gradual migration is less painful than a rip-and-replace.

The hard part isn’t the tool switch — it’s the mental switch. Selenium teaches you to wait explicitly (sleep, WebDriverWait). Playwright teaches you auto-wait. Both are valid. The cognitive load is real, but it’s worth it for new projects.

I spent 10 years as a Selenium guy. I’m not the type to chase shiny tools. But Playwright is the rare case where “newer” actually means “better” across the board. That’s my honest take after shipping both to production.

Sources & Further Reading

  1. Playwright — getting started
  2. Selenium — WebDriver documentation
  3. Playwright vs Selenium — BrowserStack comparison
  4. WebDriver BiDi specification

See also: The Browser Automation Trap (Jun 2026) — the long-form rant this post summarizes. · Selenium BiDi vs Playwright CDP (Jul 2026)