Evidence Review
11 Mar 2026 08:20 3m 6s 2026-03-11T07-20-25-643Z
14 tests 85% compliant 2 violations 1 errored
2 violations
1 of 2
HeaderFooter50% limit58.0%Page cross-section · desktop
Rule
Ad Density
Rule #9 critical desktop
What the rule requires
Ads must not occupy more than 50% (desktop) or 30% (mobile) of the vertical height of a page.
Why this was flagged
Measured density of 58.0% exceeds the 50% limit by 8.0 points.
Measured values
Value58.0%
Threshold50%
Over by+8.0 points
Devicedesktop
Duration41s
Recurrence
50%
Intermittent — fails in ~50% of runs
HeaderFooter50% limit58.5%Page cross-section · desktop
Rule
Ad Density
Rule #9 critical desktop
What the rule requires
Ads must not occupy more than 50% (desktop) or 30% (mobile) of the vertical height of a page.
Why this was flagged
Measured density of 58.5% exceeds the 50% limit by 8.5 points.
Measured values
Value58.5%
Threshold50%
Over by+8.5 points
Devicedesktop
Duration1m 30s
Recurrence
50%
Intermittent — fails in ~50% of runs

Compliant Reference Designs

Each example shows one possible compliant arrangement. These are structural illustrations, not the only valid design.

Ad Density
Example compliant layout. This is one possible arrangement, not the only valid design.
Header
Ad · Leaderboard 728×90
Article content
Ad · Medium Rectangle
More content
Footer
62px ads / 280px page = 22% — within 50% desktop limit
Reduced ad count and spacing to keep density well below threshold.
Sticky Ads
Example compliant layout.
Scrollable content
Sticky ad · 15% of viewport
15% viewport coverage — within 30% limit
Sticky ad height reduced to stay under 30% of viewport.
Pop-up Ads
Example compliant layout.
Header
Page content — no overlays blocking reading
Footer
No content-blocking overlays
All pop-up overlays removed. Content fully accessible.
Autoplay Video
Example compliant layout.
Article text
▶
Muted by default
Content continues
Video requires click to play with sound
Video starts muted. User must click to enable audio.
Prestitial / Interstitial
Example compliant layout.
Header
Content loads immediately — no blocking overlay
Footer
Direct content rendering, no interstitial
No full-page blocking ads before or during navigation.
CNC Better Ads Compliance — Evidence Review Generated with the help of AI by Anthropic · 2026-03-30