Google Ads Image Size Specs 2026: Display Creative That Passes Review

2026-10-14

Google Ads image size gets asked about so often because it is not one number. The placement decides the ratio and the asset type decides the file cap: 150 KB for a classic display image ad, 5120 KB for responsive display marketing images and logos. This page lists the recommended pixel sizes per placement, the caps that apply to each, and the compression steps to run before upload. Once ratio, pixels and weight line up, what is left is a copy problem.

Ratio and recommended pixels per placement

• Marketing image, responsive display, 1.91:1: 1200 by 628 recommended, 600 by 314 minimum. This is the one that appears most across feeds and banners.
• Marketing image 1:1: 1200 by 1200 recommended, 300 by 300 minimum. The square asset travels best across mobile placements.
• Portrait 4:5: 960 by 1200 recommended, 480 by 600 minimum. Only worth a separate export when you are running app or portrait inventory.
• Logo 1:1: 1200 by 1200 recommended, 128 by 128 minimum.
• Logo 4:1: 1200 by 300 recommended, 512 by 128 minimum. This is the banner position brand mark.
• Classic display image ads: fixed sizes such as 300 by 250, 728 by 90, 300 by 600, 320 by 100, 160 by 600 and 970 by 90, under 150 KB.

What a ratio really means for you is cropping. The same photograph needs a separate arrangement of the subject at 1.91:1 and at 1:1, and a straight proportional scale will cut the product or the face in half. Decide the placement before you frame the shot rather than hoping the upload step rescues it.

The size limits: where 150 KB and 5120 KB split

These two caps are constantly confused, and it is usually the first one that stops a creative from running.

• Classic display image ads: 150 KB per file, in JPG, PNG or animated GIF. This is the tight gate, and a straight-from-phone photograph routinely arrives three to five times over it.
• Responsive display marketing images: 5120 KB, minimum 300 by 300 or 600 by 314.
• Logos: 5120 KB, with PNG allowed to keep transparency.
• Gmail and some other inventory carry their own requirements, so walk every placement in the ad preview before launch.
• Values move as the product changes, so treat the upload prompt in the Ads interface as the final word.

Four steps to land inside the limit

• Set the dimensions first, compress second. Resizing and quality reduction are different operations, and doing them in the wrong order is what produces a 150 KB file that is too soft to use, usually because a 4000 pixel original was squeezed as-is. The relationship between the two is set out in /blog/resize-and-compress-image.
• Compress to a target KB rather than to a quality percentage. 150 KB is a hard threshold, so 148 KB passes and 70 percent on a slider means nothing. The reasoning behind target-size settings is in /blog/compress-image-to-200kb.
• PNG for banners and flat colour, JPG or WebP for photographs. PNG runs considerably heavier than WebP on a photo; format choice is covered in /blog/png-vs-jpg-differences and /blog/webp-vs-jpeg-comparison.
• Compress the whole set in one pass. Carousels and multi-placement campaigns need visual consistency, and per-image manual settings leave the cards at different brightness. Uniform batch settings are in /blog/batch-compress-images-multiple.

Finish with one check at 100 percent zoom: face edges, product outlines and the strokes of any text. Compression damage in ad creative almost always shows at the edges first, and it is invisible in a thumbnail. Where quality starts to fall away is covered in /blog/does-compressing-image-reduce-quality.

Checklist before you upload

• Placement first: feed, banner or portrait decides which ratio you export first.
• Lock the short edge to the recommended value in the 1200 series and let the long edge follow the ratio.
• Export marketing image and logo separately, keeping PNG for a transparent logo.
• Bring the file under the cap that applies: 150 KB for classic display, 5120 KB for responsive display.
• Inspect subject edges and text strokes at 100 percent.
• Keep an uncompressed master apart; new copy or a new placement means a fresh export from it.

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