What is Performance Max?
Performance Max (PMax) is Google's AI-powered campaign type that runs across all Google properties: Search, Display, YouTube, Gmail, Maps, and Discover. It uses machine learning to optimise bids, placements, and creatives automatically.
When to Use Performance Max
Good Fit
E-commerce with product feedsLead generation with clear conversion goalsBusinesses wanting broad reachAccounts with strong conversion dataNot Ideal For
Brand-new accounts (needs conversion data)Tight keyword control requirementsSmall budgets under £1,000/monthBusinesses needing granular reportingSetting Up Performance Max
Step 1: Conversion Tracking
PMax relies heavily on conversion data. Before launching:
Set up accurate conversion trackingAssign conversion valuesWait for 30+ conversions in your accountStep 2: Asset Groups
Create comprehensive asset groups with:
**Headlines**: 5-15 variations**Descriptions**: 5 variations**Images**: 5-20 high-quality images**Videos**: 1-5 videos (YouTube)**Logos**: Square and landscapeStep 3: Audience Signals
Guide the algorithm with:
Custom segments (search terms, URLs)Your data (customer lists, remarketing)Demographics and interestsStep 4: Goals & Bidding
Choose your strategy:
**Maximise conversions**: Best for lead gen**Maximise conversion value**: Best for e-commerceSet target CPA or ROAS if you have benchmarksBest Practices
Asset Quality
The algorithm is only as good as your inputs:
Use high-resolution imagesWrite compelling, varied headlinesInclude video contentRefresh assets regularlyBudget Allocation
Minimum £50/day recommendedAllow 2-4 weeks for learningDon't make major changes during learningExclusions
Protect your brand:
Add brand exclusions if neededExclude irrelevant placementsUse negative keywords (account level)Common Mistakes
Launching too early - Need conversion history firstWeak assets - Poor images/copy limit performanceNo audience signals - Algorithm needs guidanceImpatience - Changing settings during learning phaseIgnoring insights - Check asset performance regularlyMeasuring Success
PMax reporting is limited, but track:
Overall conversion volumeCost per conversion trendsAsset group performancePlacement reports (where available)Our Recommendation
Performance Max works well when set up correctly, but it's not magic. Success requires quality assets, proper tracking, and patience. Start with a test budget and scale once you see results.