Ad specs / Google

Google Performance Max image ad size

A Google Performance Max asset group needs horizontal 1.91:1 images at 1200 × 628 pixels (600 × 314 minimum) and square 1:1 images at 1200 × 1200 (300 × 300 minimum); vertical 4:5 at 960 × 1200 is optional. Every image is a JPG or PNG up to 5 MB, with its content in the center 80%. Performance Max lists no 9:16 image, which Demand Gen does, and allows a logo of up to 5120 KB where Demand Gen allows 150 KB.

1200 × 628
Drawn at 1200 × 628, 1.91:1. Google gives the safe area in words only: 'Content needs to be in the center 80% of the image (the safe area that won’t be cut off despite device screen size)'. Its Performance Max image assets page does not say whether that is 80% of the width and height or of the area, and links no template.
Horizontal image1.91:1 at 1200 × 628 pixels recommended, 600 × 314 minimum, 5120 KB maximum; required; 4 or more recommended, up to 20 (Google's Performance Max image assets page)
Square image1:1 at 1200 × 1200 recommended, 300 × 300 minimum, 5120 KB maximum; required; 4 or more recommended, up to 20 (Google's Performance Max image assets page)
Vertical image4:5 at 960 × 1200 recommended, 480 × 600 minimum; optional; 2 or more recommended, up to 20 (Google's Performance Max image assets page)
9:16 imageNot listed on Google's Performance Max image assets page; Google's Demand Gen image assets and ad format guidelines page lists 9:16 at 1080 × 1920, 600 × 1067 minimum
File type and sizeJPG or PNG, up to 5 MB (Google's Performance Max image assets page)
Square logo1:1 at 1200 × 1200 recommended, 128 × 128 minimum, 5120 KB maximum; required; 1, up to 5 (Google's Performance Max image assets page)
Horizontal logo4:1 at 1200 × 300 recommended, 512 × 128 minimum, 5120 KB maximum; optional; 1, up to 5 (Google's Performance Max image assets page)
Logo file size5120 KB on Google's Performance Max image assets page; 150 KB for a Demand Gen logo on Google's Demand Gen image assets and ad format guidelines page. The two pages give different limits
Logo backgroundA logo on a transparent background may be shown on white in most ads, so Google recommends a square logo and advises against a mostly white logo on a transparent background (Google's Performance Max image assets page)
Text on the imageOverlays are allowed, but Google recommends at least one image without text or graphic overlays for each of square, horizontal and vertical (Google's Performance Max image assets page)
HTML5 adsUp to 614,400 bytes (600 KB), with the meta tags productType 'dynamic' and vertical 'RETAIL' and the 'Responsive' parameter set to true (Google's Performance Max image assets page)

Source: Google Ads Help — About image assets for Performance Max 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.

Adapt in Terrads makes a 1200 × 628 version of an ad you already have, extending the picture with AI where a crop would lose too much of it.