Playwright tracing adds scoped HAR recording

Introduced 2026-05-11 · score 0.97

HOW TO USE IT

When recording network traffic for a browser workflow in Playwright v1.60.0 or later, call `context.tracing.startHar()` with the HAR path and any needed filters, then dispose its returned handle to save the HAR.

const { chromium } = require('playwright');

(async () => {
  const browser = await chromium.launch();
  const context = await browser.newContext();
  await using har = await context.tracing.startHar('trace.har', {
    content: 'embed',
    mode: 'full',
    urlFilter: '**/*',
  });
  const page = await context.newPage();
  await page.goto('https://playwright.dev');
  await browser.close();
})();

WHY THIS HELPS

Record network traffic while running a browser workflow for debugging or replay.

REQUIREMENTS AND LIMITATIONS

Version: v1.60.0
path (required) (required): Filesystem path for the HAR. A .zip extension saves a ZIP archive with response bodies as separate files.
options.content (optional): Resource content handling: omit, embed, or attach. Defaults to attach for .zip output and embed for other extensions.
options.mode (optional): HAR detail level: full or minimal. Minimal keeps information needed for HAR routing; defaults to full.
options.urlFilter (optional): Glob or regular expression filtering requests stored in the HAR; defaults to no filter.
Prerequisite: Requires Playwright v1.60 or later; tracing.startHar was added in v1.60.

FIRST-PARTY EVIDENCE

Check the installed version and the source before using it. Entry JSON

Report a problem with this card

Tools change faster than your agent’s training data.

Changes

Playwright tracing adds scoped HAR recording