Google Active View

Google Active View is the viewability measurement used across Google's ad environment. An ad counts as viewable when at least 50 percent of its pixels are visible in the active browser window for at least one second. Video ads use a threshold of two seconds. The measurement runs in the background via JavaScript sensors in the ad tag.

Why this metric matters

Classic impression counts record every call, even when the ad disappears far below the fold. Viewability shows whether the ad even had a chance to be perceived. Advertisers compare placements and reallocate budgets to inventory that is genuinely visible. Industry benchmarks range between 50 and 80 percent, depending on format and environment.

Practice and pitfalls

Mobile layouts with long scroll paths, sticky banners and lazy loading affect viewability heavily. Poorly placed ad units above the fold may show high values but stay unnoticed. Strong viewability alone does not guarantee performance, it merely creates the precondition for clicks and conversions.

Context in daily marketing work

In media planning, Active View appears in Google Ads and Google Ad Manager reports. Display buyers should know the viewability rates of their placements and block low scoring inventory. In email marketing the concept does not apply, viewability there is measured through image pixels and read time.