Banner sizes

One campaign can run several banners at several sizes, on one budget. Drop your files on the campaign's upload area, as many as you like, up to 20 per campaign, and we read each image's size from the image itself. There is no size to pick.

Each ad shows only in ad slots that were set up for the same size, so the set of sizes you upload decides where your campaign can appear. Every ad is reviewed on its own, and one ad being rejected never stops the others from serving.

The sizes you can run

Upload at one of the standard display sizes below (or exactly double one of them, see the file rules). They are listed roughly in order of how widely each one is used across the web, so the most common choices are near the top.

Rectangles, the workhorses, sit inside articles and content:

• 300×250: Medium Rectangle
• 336×280: Large Rectangle

Wide banners, top-of-page and header strips on desktop:

• 728×90: Leaderboard
• 970×90: Super Leaderboard
• 970×250: Billboard

Tall units, sidebars:

• 300×600: Half Page
• 160×600: Wide Skyscraper

Mobile banners, phone-width slots:

• 320×50: Mobile Leaderboard
• 320×100: Large Mobile Banner
• 300×100: 3:1 Mobile Banner
• 300×50: Compact Mobile Banner

Choosing one

More sites carry the common sizes, so a widely-used size generally has more places your ad can run. If you're not sure where to start, the Medium Rectangle (300×250) and the Leaderboard (728×90) are the two most universal: a rectangle for in-content slots, a leaderboard for the top of a page. 320×50 covers mobile. Upload all three to the same campaign and they share one budget, one set of targeting rules and one report.

The file rules

• Format: PNG, JPEG, GIF, or WebP. (Animated GIF or WebP is fine.)
• File size: 512 KB or smaller.
• Dimensions decide the size. An image has to be exactly one of the sizes above, or exactly double it (for Retina/HiDPI screens, e.g. 600×500 for a 300×250 slot). We measure the actual image, not the filename. Anything else is rejected by name, with the nearest accepted sizes listed, and the rest of your upload still goes through, and one odd file never costs you the others.

Running a rich-media creative instead of a static image? The same sizes apply, see HTML5 ads.

Before it goes live

A banner is reviewed before it can serve, and a campaign can't be activated while its ad is pending or rejected. Once it's approved and your campaign is active, it competes for matching slots. When it wins and the ad actually renders, that's a served impression, see what counts as a served impression.