Google Display, Microsoft Advertising and most networks accept the IAB standard units: the 300×250 medium rectangle and 336×280 large rectangle perform best, 728×90 leaderboards and 970×250 billboards run across the top of pages, 300×600 half pages and 160×600 skyscrapers fill sidebars, and 320×50 / 320×100 serve mobile. Google Display asks for files under 150 KB.
Every Display ads size on this page, verified for 2026: Medium rectangle 300×250 px (top performer), Large rectangle 336×280 px, Leaderboard 728×90 px, Large leaderboard 970×90 px, Billboard 970×250 px, Half page 300×600 px, Wide skyscraper 160×600 px, Mobile leaderboard 320×50 px, Large mobile banner 320×100 px, Mobile interstitial 320×480 px, Square 250×250 px, Small square 200×200 px. Each card is a live preview of your image in that frame — drag to reposition, slide between Fit (whole image, background added) and Fill (frame covered, edges cropped), then download the one you need or every size as a ZIP. Nothing is uploaded; the rendering runs in your browser.
Use Fill and drag the preview per size so the product stays visible in the extreme shapes (728×90, 160×600). Export JPG at 80 or WebP to stay under 150 KB; check the size shown on each card after rendering.
This is a pre-set view of the Social Media Image Resizer. Every other platform is one tab away.