Ad specs / Google
Google Demand Gen image ad size
A Google Demand Gen image ad takes square 1:1 images at 1200 × 1200 pixels (300 × 300 minimum) and horizontal 1.91:1 at 1200 × 628 (600 × 314 minimum), with vertical 4:5 at 960 × 1200 and 9:16 at 1080 × 1920 optional; each image is up to 5 MB. Headlines run to 40 characters and descriptions to 90. Google gives the square logo's minimum as 128 × 128 in one table and 144 × 144 in another, and caps the logo at 150 KB.
| Square image | 1:1 at 1200 × 1200 pixels recommended, 300 × 300 minimum (Google's Demand Gen image assets and ad format guidelines page) |
|---|---|
| Horizontal image | 1.91:1 at 1200 × 628 recommended, 600 × 314 minimum (Google's Demand Gen image assets and ad format guidelines page) |
| Vertical image | 4:5 at 960 × 1200 recommended, 480 × 600 minimum; optional in single image ads (Google's Demand Gen image assets and ad format guidelines page) |
| Vertical 9:16 | 1080 × 1920 recommended, 600 × 1067 minimum, 'Recommended for YouTube Shorts'; optional in single image ads (Google's Demand Gen image assets and ad format guidelines page) |
| Images per ad | Up to 20; Google recommends 3 of each orientation for the widest placement coverage (Google's Demand Gen image assets and ad format guidelines page) |
| File type and size | 5 MB per image and 150 KB per logo (Google's Demand Gen image assets and ad format guidelines page); Google's Demand Gen asset specs page gives the same caps and JPG or PNG for both |
| Square logo | Google's Demand Gen image assets and ad format guidelines page: 128 × 128 minimum in its asset specifications table, 144 × 144 minimum under single image ads and carousel ads, 1200 × 1200 recommended in both. Google's Demand Gen asset specs page: 144 × 144 minimum. The minimums differ |
| Logo in Gmail | Shown as a circle, which crops 21.46% of the square overall, roughly 5.36% at each corner (Google's Demand Gen image assets and ad format guidelines page) |
| Headlines | Up to 5, 40 characters each; at least 3 unique recommended (Google's Demand Gen image assets and ad format guidelines page) |
| Descriptions | Up to 5, 90 characters each; at least 3 unique recommended (Google's Demand Gen image assets and ad format guidelines page) |
| Business name | Required, 25 characters (Google's Demand Gen image assets and ad format guidelines page) |
| Carousel | 2 to 10 cards, one image each, the same aspect ratio on every card; a 40-character headline and 40-character description for the ad, and a 40-character headline per card (Google's Demand Gen image assets and ad format guidelines page) |
| Where it runs | Discover, the YouTube Home, Search and Watch Next feeds, YouTube Shorts, Gmail and the Google Display Network (Google's Demand Gen image assets and ad format guidelines page) |
| Uploaded Display ads | Still images only, JPG, PNG or non-animated GIF up to 150 KB, in sizes such as 300 × 250 and 728 × 90; 'Animations aren’t supported' (Google's Demand Gen image assets and ad format guidelines page) |
| Compared with Performance Max | Google's Performance Max image assets page lists no 9:16 image, caps a logo at 5120 KB and adds a 4:1 horizontal logo, which Demand Gen's pages do not list |
Source: Google Ads Help — About image assets specifications and ad format guidelines for Demand Gen campaigns, as of . Each row names the Google page it quotes. Platforms revise specs without notice; check the source before you build a template on it.
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Adapt in Terrads makes a 1200 × 1200 version of an ad you already have, extending the picture with AI where a crop would lose too much of it.