Google Ads wants asset sets, not one ad
Unlike a single social creative, Google's Performance Max and responsive display campaigns are fed asset sets — multiple headlines, descriptions, and images in several ratios — that Google mixes and serves. More strong assets give Google more combinations to serve.
What you need to provide
- Headlines: several short (≤30 char) and a few long (≤90 char) — different angles.
- Descriptions: a handful (≤90 char), benefit-led.
- Images: landscape (1.91:1) and square (1:1) are required, portrait (4:5) is optional but recommended, plus a square logo (Google's Performance Max specs, checked Oct 2026).
A weak or incomplete asset set is a common reason a Shopify Performance Max campaign under-delivers.
The Shopify angle
Your product feed already powers Shopping and PMax listings — but the display and discovery side still needs strong image + text creative, and that's where most stores stop. Producing multiple headlines and every image ratio by hand is slow.
Get 10 scroll-stopping ad headlines instantly — no signup.
Use the tool free →Make the asset set fast
AdCreator AI generates headlines, descriptions and a square 1080×1080 image (Google's 1:1 asset), from a Shopify product — as many variations as you want on paid plans to feed the asset set. 6 free a month. Free on the App Store →; not on Shopify, use the web app. For the social side, see Facebook ads →.
FAQ
What image sizes does Google Ads need? For Performance Max: landscape 1.91:1 (1200×628) and square 1:1 (1200×1200) required, portrait 4:5 (960×1200) optional, plus a square logo (1200×1200) — provide all for full coverage (source, checked Oct 2026).
How many headlines for Performance Max? As many strong, distinct ones as you can — Google serves the best combinations, so more good assets help.
Do I need different creative for Google vs Facebook? Yes — Google leans on asset sets and specific ratios; social leans on single hook-first creatives per placement.