What does an ad layout simulator do?

It previews how banner placeholders and ad slots fit within desktop, tablet and mobile page layouts before implementation.

Is this an official Google AdSense policy checker?

No. It provides planning checks inspired by common publisher best practices and official documentation, but it is not an official Google policy review tool.

Programmatic ad layout simulator

Ad Layout & Banner Placeholder Generator

Preview leaderboard, rectangle, skyscraper and mobile ad slots before you ship a responsive website layout.

ResponsiveAdSense-ready planningSingle File

Built for monetized websites

Visual simulator

Configure the ad slot

Change size, placement and behavior to preview how the placeholder responds across breakpoints.

Responsive preview

See the same ad slot across devices

Desktop, tablet and mobile previews use the same slot settings and show whether the placeholder fits, scales or overflows.

Generated HTML/CSS placeholder

Source-backed guidance

SEO content map

Search terms supported by this tool

Use these clusters for localized landing sections and internal links.