Learn Playwright - History, Background & Why Choose Playwright

#Introduction

Episode 0 made sure your environment is ready. Now it's time to understand why Playwright exists. This episode 1 answers three big questions: where Playwright comes from, what its core advantages are, and why you — as an engineer who wants to build end-to-end testing — should choose it over other tools.

Many people start using Playwright because of a tutorial, yet understanding its background is far more valuable. By knowing the problems it solves and its position among Selenium, Cypress, and Puppeteer, you'll find it easier to decide when to use Playwright, when not to, and how to position it within your team's testing strategy. Let's start from the beginning of the story.

By the end of this episode, you'll have a clear evaluation framework for choosing a browser automation framework — not just following trends. This is important groundwork before we dive into the architecture discussion in episode 2.

#History and Background of Playwright

#Born from the Microsoft Team in 2020

Playwright was developed by the Microsoft team and first released in 2020. This team isn't new to the browser automation world — they previously worked on Puppeteer, the hugely popular Chromium automation library in the Node.js ecosystem.

From that experience, they saw the limitations: Puppeteer only supports Chromium, while web users are spread across many browsers. Playwright was born as the answer — a framework that uses modern protocols like Chrome DevTools Protocol (CDP) and WebDriver BiDi to control Chromium, Firefox, and WebKit at the same time with a single consistent API.

#Rapid Evolution and Massive Adoption

Since its initial release, Playwright has grown quickly. The stable 1.0 release arrived in 2021, and since then its ecosystem has expanded rapidly: an official VS Code extension, a built-in HTML report, a trace viewer, and robust parallel test support. As of 2026, Playwright has become one of the most widely used end-to-end testing frameworks, with the microsoft/playwright repository on GitHub having more than 70,000 stars.

npx playwright --version

The command npx playwright --version displays the installed version. Playwright releases regularly several times a year, so making a habit of checking the version helps you learn about newly available features. To update to the latest version, run:

npm install -D @playwright/test@latest
npx playwright install

#Playwright's Core Advantages

#Cross-Browser Support

Playwright supports Chromium, Firefox, and WebKit with the same API. This is different from the old approach that required a separate driver per browser. A single line of configuration is enough to run tests on three engines at once, so you can catch bugs that only appear in one specific browser.

#Auto-Waiting

This is arguably the feature with the biggest impact on test stability. By default, Playwright waits automatically before performing an action — it waits for elements to be visible, enabled, and stable before clicking, and waits for responses before assertions. The result: your tests rarely fail because of timing, one of the biggest causes of flaky tests in other frameworks. We'll dissect the mechanics of this in episode 5.

#Powerful API

Playwright provides a modern API built around locators — not raw string selectors. All operations like clicking, filling forms, drag-and-drop, and file upload become expressive and easy to read. Combined with built-in features like codegen, trace viewer, and the integrated test runner, one tool covers nearly all your needs.

#Complete Ecosystem

Beyond the core API, Playwright ships with its own test runner, HTML reporter, trace viewer for step-by-step inspection, codegen to record actions into code, and official CI integrations for GitHub Actions, GitLab, and Azure Pipelines. You don't need to assemble tooling from scratch — it all comes as one consistent package.

#Comparison with Other Tools

#Selenium

Selenium is the old standard that's still widely used, mainly for compatibility with multi-browser grids and Selenium Grid. However, Selenium requires a separate WebDriver setup per browser, has no built-in auto-waiting, and its syntax is more verbose. For new projects, Playwright is usually much faster to set up.

#Cypress

Cypress is popular for its pleasant, approachable developer experience. But Cypress runs inside the page being tested, so multi-tab and cross-browser support are more limited. Playwright runs outside the browser as a separate process, giving it full access to the network layer, popups, and multi-context.

#Puppeteer

Puppeteer is Playwright's direct predecessor. It's excellent for automation tasks and screenshots, but it only supports Chromium and has no integrated test runner. Playwright is a superset of this approach with cross-browser support and a built-in test runner.

The following table summarizes the comparison:

#Playwright Use Cases

#End-to-End Testing

The most important use: testing complete business flows — login, checkout, upload, dashboard — exactly like a real user. This will be the main focus of this series, and later we'll test real flows like an e-commerce checkout in episode 20.

#Browser Automation

Beyond testing, Playwright can be used for task automation: scraping pages, filling in repetitive forms, taking scheduled screenshots, or monitoring product availability. Because it runs as a Node.js process, it's easy to integrate into scripts and cron jobs.

#Visual Regression Testing

With full-page and element screenshot capabilities, Playwright is a solid foundation for visual regression — automatically comparing old and new appearances. We'll cover this in depth in episode 16.

test runner → browser → context → page → actions → assertions

The flow above is the backbone of every Playwright test. npx playwright test manages the test runner, which launches a browser, opens a context and page, performs actions, then verifies the results — we'll dissect this structure in detail in episode 2.

#When Not to Use Playwright

Not every problem requires browser automation. Know its limits so you don't choose the wrong tool:

• Unit testing: pure logic is enough to test with a lightweight runner like Vitest or Jest — faster and cheaper.
• Simple integration testing: if the API can be tested directly, do it at the API layer, not through the UI.
• Apps without complex DOM: if the interface is static and rarely changes, end-to-end tests may be overkill.

Playwright shines precisely at the top layer of the test pyramid: validating that all components — frontend, backend, database — work together the way real users experience them.

#Closing

Episode 1 gave you the context: Playwright was born in 2020 from the Microsoft team that previously built Puppeteer, and grew into one of the most popular end-to-end testing frameworks with Chromium, Firefox, and WebKit support. It has three core advantages — cross-browser, auto-waiting, and a powerful API — and it beats Selenium, Cypress, and Puppeteer on several important dimensions.

Key takeaways:

• Playwright was born from Microsoft's Puppeteer team to overcome single-browser limitations.
• Cross-browser support and auto-waiting are its main advantages.
• Selenium is verbose and needs a separate WebDriver; Cypress is limited in multi-tab.
• Test runner, codegen, and trace viewer are integrated into a single tool.
• Main use cases: end-to-end testing, browser automation, and visual regression.
• Not every need has to use browser automation — position Playwright at the top of the test pyramid.

In the next episode we'll discuss Playwright's basic concepts and architecture — the Browser, BrowserContext, Page, and Electron components, the difference between the Playwright test runner and the standalone API, test lifecycle, as well as project structure and basic configuration. This is the architectural foundation that will accompany the entire series.