Google Merchant Center
Optimize your Google Merchant Center feed for product-led paid performance.
Lily Max enriches the product intelligence inside your GMC feed, then proves the lift with matched-spend tests. So Shopping, Performance Max, and Demand Gen all run on a better feed.
Google Shopping
+25%
increase in Shopping ROI after enrichment
- Impr.
- +18%
- CTR
- +12%
- ROAS
- +25%
Content quality score
Before Lily optimizes a feed, it scores the product intelligence Google has to work with.
Lily Max evaluates catalog content against platform best practices, then shows where enrichment can improve completeness, coverage, relevance, and performance readiness.
Diagnose the feed
Identify missing fields, weak product signals, and product-data gaps before enrichment work begins.
Prioritize the work
Focus credits on the product sets and attributes most likely to move Google Ads performance.
Measure improvement
Track the catalog before and after Lily enrichment, then connect quality improvements to performance tests.
One feed, every surface
One enriched GMC feed powers Google's product-led paid surfaces.
Primary
Shopping ads
Product titles, descriptions, attributes, pricing, availability, categories, and feed quality influence eligibility, matching, and product placement.
Primary
Performance Max
PMax can use Merchant Center product data across Google inventory. Lily improves the product intelligence PMax can work with.
Expansion
Demand Gen product-feed ads
When product feeds are connected, product data can power more browsable discovery experiences across Google surfaces.
Expansion
Local inventory ads
Where local inventory is in scope, Merchant Center data can support store-available product promotion.
AI-powered ads
AI Max for Shopping
AI-powered Google Ads experiences can draw on richer product and landing-page signals where those signals are used.
Visibility support
Free listings
Free listings are influenced by Merchant Center data quality, but they are not paid ads and should not be counted as paid performance lift.
Lift figures reflect controlled matched-spend tests on representative catalogs. Results vary by vertical, catalog size, and baseline feed quality.
Get started
Start optimizing your Google Merchant Center feed in 30 days.
Run a free GMC opportunity map. Lily Max scores your feed and shows where richer attributes lift visibility, conversion, and ROAS.
Opportunity map preview
- Feed quality sample
- 100 products
- Attributes assessed
- 14
- Primary goal
- Google Ads lift
- Recommended test
- Matched-spend A/B
Frequently asked questions
How does Lily Max improve Google Ads performance?
Lily Max enriches the product data in your Google Merchant Center feed, then proves the lift with matched-spend tests. A richer feed helps Google match and rank your products across Shopping and Performance Max.
Which Google Ads surfaces does an enriched feed affect?
One enriched Merchant Center feed powers Shopping ads, Performance Max, Demand Gen product-feed ads, and local inventory ads. Feed quality also influences free listings, though those are organic, not paid.
Does Lily Max work with Performance Max?
Yes. Performance Max runs on Merchant Center product data, and Lily Max improves the product intelligence it has to work with.
Does Lily Max replace my feed management tool?
No. Lily Max improves the quality of the product data your feed manager already sends to Google. There is no replatforming; it works inside your existing stack.
How does Lily Max prove the Google Ads lift is real?
Every result is measured against a control. Lily Max runs matched-spend A/B tests, so test and control spend the same and any difference reflects the feed change, not a bigger budget.
Will better product data help me show up in Google's AI surfaces?
Richer, structured data makes your catalog more legible to Google's AI experiences like AI Overviews and AI Mode. It improves readiness; it does not guarantee placement, ranking, or citation.
What results have brands seen on Google Shopping with Lily Max?
In a matched-spend A/B test, a large apparel brand saw a 28 percent revenue lift on Google Shopping with a Lily-enriched feed. Results vary by catalog and baseline feed quality.
How long until I see results on Google Ads?
Most teams connect their Merchant Center feed and launch within days, then see results as the first matched-spend test resolves. Timelines vary by catalog size and starting feed quality.