We recommend having a variety of banners sizes available for your Offer(s). This will make it easier for Publishers to promote your Offers and generate better results.

Banners are measured by the width x height in pixels. The most common ad sizes are:

250 x 250 – Square

200 x 200 – Small Square

468 x 60 – Banner

728 x 90 – Leaderboard

300 x 250 – Inline Rectangle

336 x 280 – Large Rectangle

120 x 600 – Skyscraper

160 x 600 – Wide Skyscraper

300 x 600 – Half-Page Ad

600 x 315 – Shared Post Image

970 x 90 – Large Leaderboard

970 x 250 – Billboard

300 x 250 – Medium Rectangle

320 x 50 – Mobile Leaderboard

300 x 50 – Mobile banner

We recommend keeping the file size under 150 KB and in the following formats: jpeg, swf, png, or gif.

You can always find more information about sizes on iab.com