Medium Rectangle Ads
The 300×250 medium rectangle (often called the MPU) is the most popular display size on the internet. It is large enough to tell a story, small enough to sit naturally inside article content — and consistently earns the highest click-through rate of any standard banner unit.
Best for: Performance campaigns that want the strongest click rate from a display budget.
What it is
Because it can live inside the content flow rather than only in header or footer rails, the medium rectangle captures readers who have already scrolled to engaged positions on the page. That context is why it outperforms smaller banners on both CTR and viewability across our publisher network.
How it works
- 1Upload a 300×250 image and set your budget, target countries and content categories.
- 2Once approved, your rectangle competes for inline and sidebar slots across matching pages.
- 3Publishers earn on each verified in-view impression; you pay per 1,000 counted views.
Why advertisers and publishers choose it
Best-in-class CTR
The 300×250 is the industry’s top-performing standard size, so a given budget typically buys more engaged views.
Sits in-content
Fits between paragraphs and in cards, so it reaches readers at their most attentive moment.
Multi-device friendly
A single 300×250 creative works in desktop sidebars and mobile inline placements alike.
Format at a glance
- Standard size
- 300×250 (medium rectangle / MPU)
- Creative
- Static image (JPG / PNG / WebP)
- Pricing
- CPM — per 1,000 in-view impressions
- Placement
- Inline, sidebar or in-content
Frequently asked questions
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