Google Display Portrait Banner 300×1050

Upload your display ad and instantly check if your 300×1050 image is the correct size for the IAB Portrait Banner. Verify your 150KB weight limit and dimensions before you go live.

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The Complete Advertiser’s Guide to the 300×1050 Portrait Banner

What is the 300×1050 IAB Portrait?

The 300 x 1050 Portrait is an IAB “Rising Star” ad unit. It is essentially a massive vertical canvas that appears in the sidebar of websites, offering three times the vertical space of a standard Half Page (300×600) ad.

Because of its sheer size, it is highly prized for brand awareness campaigns. It allows advertisers to divide the creative into three distinct sections (like a filmstrip) or use one continuous, immersive graphic that stays on screen for a long time as the user scrolls.

Why Use the 300×1050 Size?

• Unmissable Visibility: It occupies a huge portion of the screen real estate without interrupting the content flow.
• Rich Media Potential: The extra height is perfect for interactive features, video embeds, or complex animations.
• Premium Inventory: This size typically commands higher CPMs due to its “Rising Star” status.

Technical Specifications

Best Practices for Design

Utilize the vertical space by telling a story from top to bottom. Place your logo at the very top (so it’s seen first) and your call-to-action (CTA) at the bottom or floating in the middle to catch the user’s eye as they scroll down the page.