What's the Minimum Number of Assets Required for a Google Performance Max Campaign?

Google requires a minimum of 3 headlines, 2 descriptions, 1 landscape (1.91:1) image, 1 square (1:1) image, and 1 logo to publish a Performance Max asset group. That floor sits well below the format's maximums of 15 headlines, 5 descriptions, and up to 20 images per aspect ratio.

Minimum Text Assets to Publish

• Headlines — at least 3 required, up to 15 allowed, 30 characters each, with at least one headline of 15 characters or fewer recommended for narrower ad surfaces.
• Long headlines — not required to publish, but up to 5 can be added, 90 characters each.
• Descriptions — at least 2 required, up to 5 allowed, 90 characters each.
• Business name — required, up to 25 characters.

Minimum Image and Logo Assets to Publish

• Landscape image (1.91:1) — at least 1 required, minimum 600×314px, with 1200×628px recommended; up to 20 allowed.
• Square image (1:1) — at least 1 required, minimum 300×300px, with 1200×1200px recommended; up to 20 allowed.
• Portrait image (4:5) — optional, not required to publish, recommended at 960×1200px.
• Logo (1:1 square) — at least 1 required, minimum 128×128px, with 1200×1200px recommended.

Why Google Still Recommends Going Past the Minimum

Performance Max assembles ads automatically across Search, Display, YouTube, Discover, Gmail, and Maps from whatever assets you supply, choosing which combination to show based on the specific placement and the predicted best fit for that surface. An asset group sitting at the bare minimum gives Google's system far fewer combinations to test and far less room to adapt a given ad to each surface's layout — a portrait image, for instance, only has a chance to serve on surfaces that use that aspect ratio, so skipping it removes the campaign from being eligible for those placements with that creative at all.

Video Is Recommended but Not Required

Performance Max also accepts video assets, and Google will auto-generate a video from your images and text if you don't supply one — but a self-made video typically outperforms the auto-generated version, since Google's auto-generated videos are limited to combining existing static assets rather than purpose-built video creative.

Bottom Line

Treat the 3-headline, 2-description, 3-image, 1-logo minimum as the floor for getting an asset group to publish, not the target — filling out closer to the maximum in each category, including the optional portrait image, gives Performance Max more combinations and more placement eligibility to work with.

Source: Google Ads Help, "About Performance Max campaigns" and asset specification documentation (support.google.com/google-ads/answer/10724492).