In Playwright and Puppeteer, a browser context is a lightweight container that mimics an incognito window: it shares the browser process and network stack but maintains completely separate cookies, local storage, IndexedDB, and authentication state. Multiple contexts can run concurrently inside a single browser, each acting as an independent user session.

Browser contexts are the preferred unit of isolation for parallel scraping tasks. Creating a new context is orders of magnitude cheaper than launching a new browser instance, allowing a single browser process to handle many simultaneous scraping sessions efficiently. Each context can also have distinct viewport dimensions, locale settings, geolocation overrides, and HTTP authentication credentials.

For anti-bot evasion, each context should be treated as a distinct user: avoid sharing cookies or storage between contexts, and apply consistent fingerprint settings within a context (same user agent, viewport, timezone) so that the fingerprint remains coherent across a session.

Examples

// Playwright: create isolated browser contexts for parallel scraping
const browser = await chromium.launch();
const contexts = await Promise.all(
  urls.map(async (url) => {
    const ctx = await browser.newContext({ locale: "en-US" });
    const page = await ctx.newPage();
    await page.goto(url);
    return page.content();
  })
);
await browser.close();

Browser Context

Examples

Related Terms

Extract Browser Context data from any website

Your first scrape.
Sixty seconds.

Examples

Related Terms

Extract Browser Context data from any website

Your first scrape. Sixty seconds.

Your first scrape.
Sixty seconds.