Launching a Browser with Playwright

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Launching a Browser – Step-by-Step

1. Basic Chromium Launch

python

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import asyncio

from playwright.sync_api import sync_playwright

with sync_playwright() as p:

    browser = p.chromium.launch()  # Use .launch(headless=False) to see the browser

    page = browser.new_page()

    page.goto("https://example.com")

    print(page.title())

    browser.close()

2. Launching Firefox or WebKit

python

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with sync_playwright() as p:

    browser = p.firefox.launch(headless=False)  # For Firefox

    # or: browser = p.webkit.launch()

    page = browser.new_page()

    page.goto("https://example.com")

    print("URL:", page.url)

    browser.close()

3. Headless vs Headed Mode

Mode Use

headless=True (default) Runs without GUI (faster)

headless=False Opens real browser window (debugging/UI testing)

4. Controlling the Browser Context

python

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with sync_playwright() as p:

    browser = p.chromium.launch(headless=False)

    context = browser.new_context()

    page = context.new_page()

    page.goto("https://google.com")

    browser.close()

🌐 Useful Playwright Actions

Action Code

Type in input page.fill("input[name='q']", "Playwright")

Click a button page.click("text=Search")

Wait for element page.wait_for_selector("#element_id")

Take screenshot page.screenshot(path="screenshot.png")

Save PDF page.pdf(path="page.pdf") (only for Chromium)

🧰 Async Version (Optional)

Playwright also supports async:

python

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import asyncio

from playwright.async_api import async_playwright

async def run():

    async with async_playwright() as p:

        browser = await p.chromium.launch(headless=False)

        page = await browser.new_page()

        await page.goto("https://example.com")

        print(await page.title())

        await browser.close()

asyncio.run(run())

🛠️ Troubleshooting

Problem Solution

Browser doesn’t launch Run playwright install again

Timeout errors Use page.set_default_timeout(ms)

Element not found Try using proper CSS/XPath or wait for selector

📌 Final Tips

Use sync version for simple scripts.

Use async for complex or parallel tasks.

Playwright is ideal for modern SPA apps and dynamic UIs.

Read more

 Understanding Playwright Architecture

Setting Up Playwright with Node.js

Playwright with JavaScript vs Python vs TypeScript

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