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Free Chrome extension

Ad Density Checker

It reloads the page, scrolls it like a reader and measures how much of the article is ads. Then it puts that next to the CrUX p75 Chrome publishes for the site.

Download the extension

Install

  1. Unzip the file.
  2. Open chrome://extensions and turn on Developer mode.
  3. Load unpacked and choose the ssm-ad-density folder.
  4. Open the page you want to measure and click the extension icon. Pick mobile or desktop and press Medir.

What the first version measures

  • Better Ads density: height of the ads inside the article, divided by the height of that article. Side-by-side ads in the same band count once. Passes at or below 30% on mobile and 50% on desktop.
  • Chrome viewport: the share of the screen covered by ads from the big ad networks Chrome usually tags, sampled while the page scrolls.
  • CrUX p75 for density, ad count, CPU and network. CPU and network come only from CrUX. An extension cannot read them the way Chrome does.
  • Ads Chrome misses, drawn in pink: videoo.tv, Addoor, Refinery89 and boxes labelled Publicidad or Advertisement, including empty ones.

Not in this version

Pop-ups that close after three seconds, ad gates, skins, interscrollers, video players and a stitched screenshot of the whole page. Chrome shows a yellow “started debugging this browser” bar while the test runs. Cancelling that bar stops the test.