Performance Max doesn't use ads you build. It builds ads from your assets.
You supply headlines, images, video, logos and audience signals in an asset group. Google assembles every format Performance Max can serve — Search, Display, Discover, Gmail, Maps, YouTube and more — from that kit. Weak kit, weak coverage. Strong kit, you show up everywhere.
That's why performance max assets keeps getting searched. The campaign type isn't the constraint. The assets are.
One asset group is one complete kit:
Google mixes and matches to fit the slot. You don't pick pmax ad sizes the way you picked Display sizes. You cover the ratios and Google renders the sizes.
If you leave a slot empty, Google fills it. Usually with an auto-generated video you wouldn't have approved. That is the most common PMax failure we see: not bad bidding, incomplete kit.
Use this as your build checklist. Limits move in the UI, so treat the Google Ads asset editor as final, but this is what Google enforces for a complete group in 2026:
Text
Creative
Ad strength of Excellent isn't the goal. Full coverage with on-brand assets that convert is the goal.
Think ratios, not one-off sizes. This answers pmax image dimensions and performance max image video size together.
PMax images:
PMax logos:
Minimum to serve is 1 landscape image, 1 square image, 1 landscape logo and 1 square logo. Minimum to perform is more.
Best practice for 2026:
If you upload no video, Google will generate one from your images and text. Don't let it.
Full specs and creative strategy are in our Performance Max video assets guide, but the operating rules are simple:
Why skipping uploaded video hurts is covered here: why auto-generated creative kills performance. In short: auto-generated video gets you YouTube reach with no story, no proof and no control.
Low-budget rule: one strong 30-second cut in three ratios beats five weak videos. Small team rule: upload what you have now to block auto-generation, then replace with purpose-built cuts.
format performance max isn't one responsive ad. It's groups.
This is where human teams fall behind. Ad auctions change 24/7 but a team checks in once a day. It's not a talent problem, it's a species problem. More signals than time.
If budget is under $5k/month:
Run one PMax campaign, 1-2 asset groups. Cover all text limits, all image ratios, both logos, one video set. Add audience signals from past converters and site visitors. Don't split by micro-segment until you have 30+ conversions per month per group.
If team is small or no designer:
Ship complete over perfect. Phone-shot vertical video with captions beats auto-generated video. Use Budgeting Agents logic: block irrelevant waste first, then expand creative. groas builds, runs and improves your Google Ads 168 hours a week, writes and tests ad copy, deploys dynamic landing pages that reshape around each search, and moves budget where it earns the most.
If you are ecommerce:
Fix the feed before adding assets. Rewrite titles for search intent, segment by margin, and protect brand search from PMax cannibalization with exclusions. Then give each margin tier its own asset group and creative.
If you are lead gen or home services:
Build asset groups by service + market, not one national group. Pair each with a location-specific landing page and clean conversion tracking tied to booked jobs, not just form fills.
If you are an agency:
Standardize the kit: 15 headlines, 5 long, 5 descriptions, 3 ratios + 2 logos + 3 video ratios as the definition of done. No client launches incomplete.
For google ads performance max update june 2026, June was about control and data, not new ratios.
What we logged in early June:
That last point matters for assets: better search-term visibility means faster feedback on which headlines and signals pull junk. Use it to prune text, tighten signals and add negatives.
Full account-level rundown is here: Every Google Ads Change That Matters in 2026 — PMax, AI Max, GA4 and Demand Gen.
Practical take: don't rebuild asset ratios for June. Re-check tracking, re-check brand exclusions, and replace your weakest 20% of headlines and images. The update rewards clean signal, not new sizes.
groas is a fully autonomous growth engine for paid search and organic search. Hundreds of specialized models execute every action a marketing team would, at a scale no human team can, while a groas named account manager owns the direction, the guardrails, and the result.
For PMax that means:
You set budgets and guardrails. The engine acts freely inside them and never beyond them. Apply for free trial to get a complete asset kit live the same day, not after a 1-3 month hire.
