Why was Playwright developed when Selenium already existed?
Posted by Shivani Singhal
Posted on 20th Jul 2026 12:01 PM
( 60 min Read & 70 min Implementation )

Article Outline

Why this comes in my mind ?


When someone makes a statement, do you believe it without any facts or proof? Probably not. Every claim needs evidence to be convincing. So, if I say Playwright is better than Selenium, your first question should naturally be, "How?" If I claim that Playwright is faster, more reliable, or easier to use, I should be able to support those claims with technical facts, real-world examples, and measurable comparisons rather than opinions. In this blog, we'll examine the evidence, compare both frameworks objectively, and let the facts speak for themselves. By the end, you can decide whether Playwright truly has an advantage over Selenium.



Why was Playwright developed when Selenium already existed?


Mindset behind Selenium


Playwright was developed by Microsoft to address the challenges of testing modern web applications. Selenium is a mature and widely adopted automation framework, but it was originally designed when web applications were mostly server-rendered. Today, applications built with React, Angular, and Vue are highly dynamic, use asynchronous API calls, client-side rendering, and frequent DOM updates. These changes introduced challenges such as flaky tests, synchronization issues, and stale element references.


Mindset behind Playwright


Playwright was designed with these modern applications in mind. It provides built-in auto-waiting, reliable locators, browser context isolation, network interception, API testing capabilities, and powerful debugging tools like Trace Viewer. It also communicates directly with browser-specific protocols rather than relying on a separate WebDriver implementation, which reduces automation overhead.


That said, Playwright was not created to replace Selenium completely. Selenium remains an excellent choice for many enterprise projects, especially those with large existing automation frameworks and broad language support. Playwright simply provides additional capabilities that make testing modern web applications easier and more reliable.



My Comparison guideline


Let's emphasis on some of these terms used above :


Flaky Tests

This means that script is right but sometimes element isn’t visible , clickable or it’s stale. We had to use lot of conditional waits to combat this situation if we use selenium to test modern web application.


Modern web application vs Traditional web application

A modern web application is a web application that relies heavily on JavaScript to provide a fast, interactive user experience. Instead of reloading the entire page after every user action, it updates only the required parts of the page dynamically. Whereas traditional web application on every click or form submission usually causes a full page refresh.


Waiting time

Modern web application are asynchronous in nature which may be faster for end user but when it comes to write automation script using selenium we need to add more waits.Explicit waits themselves don't make Selenium inherently slow because they return as soon as the condition is met. The bigger issue is that Selenium requires the test author to manage synchronization manually, which leads to more code, a greater chance of incorrect waits or fixed delays, and higher maintenance.


Browser context

It's better to use browser context rather than seperate browser because Browser Contexts share the same browser process while maintaining separate sessions. This reduces memory usage, CPU consumption, and browser startup time


Network mocking

No inbuilt feature to support mock cases.



So even today while large group of people are still using selenium as it's mature , ideal for maintaining large enterprise automation suites. People are slowly switching to playwright reason is not because it’s designed to replace selenium , It is mainly because it solves challenges we had with selenium. That makes it faster automatically. Let's deep dive and understand step by step .


Why is the organisation migrating from Selenium to Playwright


Better support for modern web applications


Modern web applications are usually built using frameworks like React , Angular , Vue , Next.js. Unlike traditional websites, they update only parts of the page (Single Page Applications - SPAs) , load data asynchronously using APIs , dynamically create and remove DOM elements , use animations and transitions, often don't perform a full page refresh.

let's understand it through one simple example :


Suppose you click Login.


Traditional website:

Click Login
Entire page reloads
Dashboard appears



Modern React application:

Click Login
API call starts
Spinner appears
DOM updates dynamically
Dashboard is rendered


The page never reloads.


Usual Challenge


If Selenium tries to click too early:

driver.findElement(By.id("login")).click();


You may get:

ElementNotInteractableException

because the button isn't ready.


How Selenium handle this problem


using Explicit Wait concept. where driver wait element to available to click

WebDriverWait wait= new WebDriverWait(driver, Duration.ofSeconds(10));
wait.until(ExpectedConditions.elementToBeClickable(locator));


How Playwright handle this problem

Playwright handle this problem automatically.


page.locator("#login").click();


Playwright waits automatically until the element is:

  1. attached to DOM
  2. visible
  3. enabled
  4. stable
  5. ready to receive events

No explicit wait is needed in many cases.


Automatic waiting


When you execute:

page.locator("#login").click();


Playwright does something conceptually like this:





Why is this important?

Modern web applications built with React, Angular, and Vue often:

  1. load data asynchronously
  2. re-render components
  3. show loading spinners
  4. use animations
  5. enable buttons after API calls

Auto-waiting handles many of these timing issues automatically, reducing the need for explicit waits.


Reliable cross-browser testing


With this are we saying that playwright is perfect for testing scripts across all browsers, "NO".


Reliable cross-browser testing means that the same automated test can run consistently across Chromium, Firefox, and WebKit with minimal changes. Playwright improves reliability by shipping compatible browser binaries with each release, providing a consistent API across browser engines, automatically handling synchronization through auto-waiting, and isolating tests using BrowserContext. It also offers built-in debugging tools like Trace Viewer, screenshots, and network logs, making browser-specific issues easier to investigate.


Do you remember the times when your suites starts failing reason because driver version you have no longer supports chrome browser latest update.

So playwright ships browser binaries which are already complatible , It downloads browser binaries that are tested with that Playwright version which solves many version miss match issues.


Better support for modern browser engines

Playwright directly supports:

  1. Chromium
  2. Firefox
  3. WebKit

These represent the major rendering engines used by modern browsers.This is especially valuable for Safari compatibility, since WebKit testing is built into Playwright.


Built-in network interception


Built-in network interception allows Playwright to intercept HTTP requests and responses between the browser and the server. We can inspect, modify, block, or mock network traffic without using external proxy tools. This is useful when the backend is unavailable, when we want to simulate success or failure responses, test edge cases, or make UI tests independent of backend services. Unlike Selenium, which typically requires additional tools for this capability, Playwright provides it as part of its core framework, making API mocking and frontend testing much simpler and more reliable.



API testing capabilities : Playwright is primarily a browser automation framework, but it also includes a built-in HTTP client called APIRequestContext. This allows you to send HTTP requests directly without opening a browser.


Why did Microsoft add API testing?

Modern applications are API-driven. The UI is just a client. Most business logic lives in APIs.Microsoft wanted testers to validate both the UI and APIs without switching between multiple tools.


How is it different from REST Assured?

Feature

Playwright

REST Assured

API Testing

UI Testing

Browser Automation

Network Interception

End-to-End Testing

Limited

Mature API Features

Good

Excellent



Should Playwright replace REST Assured?

The answer is No.


REST Assured is still stronger for:

  1. Complex API automation frameworks
  2. Contract testing
  3. Extensive schema validation
  4. Advanced request/response handling
  5. API-only projects


Playwright API is excellent for:

  1. Creating test data
  2. Cleaning up data
  3. Authentication
  4. Supporting UI tests
  5. End-to-end scenarios combining API and UI


Browser context isolation


A Browser Context is an isolated browser session within a single browser instance.


Why is Browser Context better than opening multiple browsers?

  1. Faster startup
  2. Lower memory usage
  3. Lower CPU usage
  4. Complete session isolation
  5. Better support for parallel execution

Let's understand it through real time example


Real-world Banking Example

Suppose you're testing a money transfer.

Customer
Transfers ₹1000
Receiver


You need two logged-in users at the same time.


Using Browser Contexts:

Browser

├── Context 1
│ Customer Login
└── Context 2
Receiver Login


Both users interact simultaneously without interfering with each other.


Why not launch two browsers?


You could do this:

Chrome
Chrome

But that means:

  1. More memory
  2. More CPU
  3. Slower execution

Instead:

One Chrome
Two Browser Contexts

This is much more lightweight because the browser engine is shared while the session data remains isolated.



Powerful debugging tools


Playwright provides several built-in debugging tools that simplify failure analysis. The most powerful is Trace Viewer, which records every test action along with screenshots, network activity, console logs, DOM snapshots, and timing information, allowing us to replay a failed test step by step. In addition, Playwright supports automatic screenshots, video recording, the Playwright Inspector for interactive debugging, code generation for quick script creation, and built-in access to network and console logs. These features reduce the time required to identify the root cause of failures and are especially valuable when investigating flaky tests or CI/CD failures.


Selenium vs Playwright Debugging

Feature

Selenium

Playwright

Trace Viewer

Inspector

Limited

Video Recording

External tools/plugins

✅ Built-in

Screenshots

Network Logs

Requires additional setup

✅ Built-in

Console Logs

Available but more setup

✅ Easy to capture

Action Timeline




Final conclusion


Playwright is generally faster than Selenium because it communicates directly with browser-specific protocols instead of relying on a separate WebDriver implementation, reducing communication overhead. It also provides built-in auto-waiting, which eliminates much of the explicit synchronization code needed in Selenium. BrowserContext allows multiple isolated sessions within a single browser process, making multi-user and parallel testing more efficient. Additionally, Playwright includes built-in capabilities like network interception, API testing, and debugging tools, reducing the need for external integrations. While these factors improve automation performance and reliability, the actual execution time still depends on the application's own response time.

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