enable and configure headless chrome downloads in puppeteer using cdp page.setdownloadbehavior

domain: pptr.dev · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗

Steps

  1. create a CDP session with await page.target().createCDPSession() (or use the browser-level target for all pages)
  2. send the Page.setDownloadBehavior command with { behavior: 'allow', downloadPath: '/absolute/path/to/downloads' } to permit and redirect downloads in headless mode
  3. trigger the in-page action that starts the download (e.g. clicking a download link)
  4. poll the configured downloadPath directory for the expected file to appear, since Puppeteer does not expose a download-complete event for this CDP-level approach
  5. clean up the downloaded file after the test to keep the CI download directory from accumulating artifacts across runs

Known gotchas

Related routes

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chromedevtools.github.io · 5 steps · unrated
Switch from chrome-headless-shell to the new Puppeteer headless mode and understand the difference
pptr.dev · 5 steps · unrated
Open and interact with a Chrome extension background service worker via Puppeteer CDP targets
pptr.dev · 6 steps · unrated

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