Google Ads image sizes for Performance Max, Demand Gen and Display

Image sizes by campaign type

Google’s own pages disagree on the square image for responsive display ads: the spec page recommends 600 x 600, and the "Create a responsive display ad" page recommends 1200 x 1200. Upload 1200 x 1200 and you meet both. Demand Gen also lists two minimums for the square logo, 128 x 128 in its asset table and 144 x 144 in its format table, so make the logo 1200 x 1200 and the question goes away.

The center 80% rule

Google says content needs to be in the center 80% of every image asset, which it calls the safe area that will not be cut off on any screen. It does not say whether that means 80% of each side or 80% of the area. The table uses 80% of each side, the stricter reading.

For 9:16 images, Demand Gen points to Google’s video safe zones, which Google publishes as reference images and downloadable PNG templates rather than pixel numbers. Lay the vertical template over your frame before you upload.

Why Google rejects image assets

Google reviews every image against its image asset requirements before it can serve. These are the rules product images break most easily:

• Too much blank space. Google does not allow images with so much empty space that the product cannot be recognized. A small bottle on a large white field can fail, so let the product fill the frame.
• Collages. Images combined in post-production are allowed only with limits, such as a scrapbook or catalog page that is a collage by nature.
• Blurry, distorted or badly cropped images, where the subject is hard to make out.
• Overlays. Text and graphics on the image are allowed with limits. For Performance Max, Google recommends at least one image without overlays in each shape.
• Swimwear and lingerie. Allowed only when shown as a flat lay or on a mannequin.

Two logo notes from the same pages. Google may show a logo with a transparent background on white, so avoid a mostly white logo on a transparent background. And Gmail shows the square logo as a circle, which crops about 21% of it, roughly 5% at each corner, so keep the mark away from the corners.

Text limits

Getting Google’s shapes from AI renders

• Landscape 1.91:1. Neither Nano Banana nor GPT Image 2.5 lists 1.91:1 as a standard size. Render 16:9 and crop about 7% of the height: a 2752 x 1536 Nano Banana render crops to 2752 x 1440 and scales to 1200 x 628. Frame the shot with room above and below the product so the crop takes background, not product.
• Portrait 4:5. GPT Image 2.5 can render 960 x 1200 directly, since both sides are multiples of 16. Nano Banana’s 1K 4:5 is 928 x 1152, just under, so use its 2K render (1856 x 2304) and scale down.
• Square. GPT Image 2.5 can render 1200 x 1200 directly. Scale a 2048 x 2048 Nano Banana render down.
• Logo. Upload your real logo file. Image models redraw letters and marks, so an AI-made logo will not match your brand.

If you leave out a video in Performance Max, Google says it will create videos automatically when it can. Check what it made in the asset report before you let it run. How to adapt one campaign to every ad size covers building all three shapes from one set, and the AI image QA checklist covers checking the product in each.

Uploaded banner ads

If you design finished banners yourself instead of giving Google assets to assemble, the rules change: GIF, JPG or PNG files of 150 KB or less, in fixed sizes such as 300 x 250, 728 x 90, 300 x 600 and 320 x 50. The full list, and how to make the set from one photo, is in standard banner ad sizes.

Recent changes

• AI labels, July 2026. Google now lets advertisers put "made with AI" text or visual labels inside image and video ads without breaking its rules on text overlays and watermarks, and rolled out an AI label setting through July. Its spec pages now open with a notice that rules in the European Union, India and New York require labels on some AI ads. See do you need to label AI images in ads.
• Watch-While Ads. Google’s Demand Gen page says YouTube has launched image ads that sit just under the video on the watch page, served from Demand Gen, Performance Max and app install campaigns. Viewers can close them, and they disappear after 30 seconds without interaction.
• Logos. Google says business logos and business information in Performance Max have been consolidated at the campaign level, so keep one logo set per campaign instead of splitting them across asset groups.

Questions people also ask

Do I need a vertical image for Performance Max?

No. Google marks the landscape image, the square image and the square logo as required. The 4:5 portrait image is optional, and Google recommends adding two or more.

Why was my image asset disapproved?

Google’s image asset requirements list the usual causes: so much blank space that the product cannot be recognized, a collage made in post-production, blur, distortion, a crop that hides the subject, or nudity. Fix the cause and upload the image again.

Can I use AI-generated images in Google Ads?

Google’s spec pages ask you to label AI-generated or AI-edited assets where local rules require it, naming the EU, India and New York, and offer an AI label setting. By uploading any image asset you also confirm you own the legal rights to it. Can you use AI images commercially covers the rights side.

Sources

Checked on September 24, 2026. Prices, specs and rules change; follow the links for the current versions.

1. 1.Google Ads Help: Performance Max campaigns specs and format requirements
2. 2.Google Ads Help: About image assets for Performance Max campaigns
3. 3.Google Ads Help: About image assets specifications and ad format guidelines for Demand Gen campaigns
4. 4.Google Ads Help: Responsive display ads specs and format requirements
5. 5.Google Ads Help: Create a responsive display ad
6. 6.Google Advertising Policies Help: Image assets format requirements
7. 7.Google Ads Help: About video ad specs (universal safe zones)
8. 8.Google Ads Help: Uploaded display ads specifications
9. 9.Google Advertising Policies Help: Updates to AI labeling requirements (posted 9 July 2026)
10. 10.Google AI for Developers: Nano Banana image generation (sizes by aspect ratio)
11. 11.OpenAI: Image generation guide (size options)