Playbook: Push a slot's viewability past 70%

Playbook: Push a slot's viewability past 70%
What it does: raises measured viewable rate, which directly lifts the CPMs demand will pay.

Setup (effort 3/5):
— Pull per-slot viewability from GAM (Active View). Sort ascending — fix the worst first.
— Move sub-50% slots higher in the DOM or into sticky containers.
— Lazy-load below-fold units so impressions only fire when actually near-view (kills the dead-impression drag).
— Add fetchMargin so the ad renders BEFORE scroll reaches it — late renders read as non-viewable.
— Set a viewability floor in your private deals; buyers pay up for 70%+ inventory.

RPM lift seen: +6-15% as CPM bids rise with the viewable rate.

Pros: compounds — better viewability attracts better demand. Cons: chasing 100% wastes effort; demand caps the benefit near 80%.

Lift: ★★★★☆ — Risk: ★☆☆☆☆
Best for: sites with viewability under 60%. Skip if you're already above 75%.