Mozilla today introduced three new test features for Firefox, including one that separates YouTube videos from the browser and another that may foreshadow a more aggressive ad-blocking strategy by the open-source developer.

“We’re excited to announce the release of three new Test Pilot experiments,” said Nick Nguyen, the vice president of Firefox, in a post to a company blog. “These features will help you share and manage screenshots; keep streaming video front and center; and protect your online privacy.”

Test Pilot was re-introduced in May when Mozilla resurrected a 2009 moniker and used it on a 2015 project that had fallen into disuse. Test Pilot was designed to collect feedback on proposed new features for Firefox before they were added to the browser.

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