Case Study
3 Apr 2026
Why Your Google Shopping Feed Is Costing You Sales (And What to Fix First)
Most ecommerce stores treat their Google Shopping feed as a set-and-forget task. Products get exported from Shopify, uploaded to Merchant Center, and that's considered done. The campaigns go live, the budget starts spending, and nobody looks at the feed again.
The problem is that Google Shopping is a data auction as much as a bidding one. Your Google Shopping campaign performance is directly tied to how much useful, structured information you give Google to work with. A weak feed means your products show for the wrong searches, at the wrong times, to the wrong people — and you pay for all of it.
Here's what properly optimised feeds actually do to performance, based on real examples from the industry.
1. Product title optimisation — 4x CTR increase, same ad spend
One store had 190,000 impressions and only 412 clicks — visible, but nobody was clicking. After optimising titles, images, and product data across their top 40 products, CTR went from 0.2% to 0.8% within 30 days. Same impressions. Four times more clicks. Store Growers
Product titles are the single highest-leverage element in your feed. Google uses them to match your products to search queries. If your titles are pulled straight from your website — often short, brand-centric, or keyword-thin — you're leaving a lot of relevant traffic on the table.
The fix: lead with the most searchable attributes first. Category, key descriptor, brand, variant. Not your internal product code.
Note: Results are specific to this client. Actual performance will vary.
2. Adding keywords to titles — average 18% CTR lift
Retailers in a Search Engine Land study saw an average 18% CTR increase simply by adding keywords to their product titles. Plytix
This isn't about stuffing titles — it's about writing them the way customers search rather than the way your warehouse labels them. "Blue Merino Wool Crew Neck Jumper — Men's Medium" outperforms "Jumper BLU-M-001" in every metric that matters.
Your SEO keyword research translates directly here. If you already know what terms your audience uses to find your products organically, those same terms belong in your feed titles.
3. Feed completeness and GTIN accuracy — 95% increase in Shopping conversions
After a full feed optimisation pass — including correcting GTIN attributes, titles, and product data — one agency reported a 95.67% increase in Google Shopping conversions for their client. DataFeedWatch
GTINs (Global Trade Item Numbers) are one of the most underestimated feed attributes. When populated correctly, Google can match your products to competitor listings, factor in price comparisons, and show your ads in higher-intent placements. When they're wrong, products get disapproved quietly and your reach shrinks without any obvious warning in the campaign dashboard.
A Google Merchant Center audit will surface these issues. Most stores have more disapprovals and data gaps than they realise.
Note: Results are specific to this client. Actual performance will vary.
4. Title restructuring — 12% conversion lift, 13% revenue increase in 45 days
A B2B seller with low CTR on product listings saw a 12% lift in conversion rate and 13% more revenue within 45 days after their feed team restructured titles alone. Go Fish Digital
This is the compounding benefit of feed work: better titles mean better query matching, which means higher quality clicks, which means more conversions — without touching bids or budgets. It's the part of Google Shopping optimisation that most agencies skip because it's not billable hours inside Google Ads.
Note: Results are specific to this client. Actual performance will vary.
5. Custom labels — the lever most stores don't use
Custom labels let you segment your feed by margin, price bracket, seasonality, or bestseller status — then apply different bidding strategies to each group inside your campaigns or Performance Max.
Most Shopify stores export a feed with zero custom labels. That means Google is treating a $12 product and a $240 product with identical bidding logic. Once custom labels are live, you can pause all low-margin products in Performance Max with one click, or bid higher on your best margin items. Store Growers It's one of the fastest ways to improve ROAS without increasing spend.
The pattern
Feed optimisation sits upstream of everything else in a Google Shopping account. Before adjusting bids, restructuring campaigns, or increasing budgets, the feed needs to be in good shape — because all of those levers work harder when Google has clean, complete, keyword-rich data to work with.
This is why feed optimisation is one of the first things we audit for every new ecommerce client. The issues are almost always there. They're just not visible in the campaign dashboard.
Not sure what shape your feed is in?
Our free Google Ads and Merchant Center audit covers feed quality, disapprovals, title structure, and campaign setup — so you know exactly where the gaps are before spending another dollar.