Dennis Gerich
Google Ads Specialist & Founder of FeedOptimizer.AI
Dennis Gerich has been working with e-commerce clients in performance marketing for over 12 years, managing more than €10M in Google Ads budgets. He built FeedOptimizer.AI because he saw every day how poor product feeds were ruining great campaigns. Today he writes about Google Shopping, feed optimization, and data-driven e-commerce marketing.
Articles by Dennis Gerich
32 articlesFeed Quality Score Benchmark: How Stores Really Rank
Feed quality score benchmark across 462,416 products shows how online stores actually rank. Average is just 45/100, and product highlights are the weak spot.
9 min readFeedOptimizer.AI vs Feedonomics for Small Business
FeedOptimizer.AI or Feedonomics? Surface vs. managed service, pricing by catalog size, AI depth vs. rules engine, and who actually needs which tool.
12 min readAI vs. Manual Feed Optimization: Which Is Faster?
AI vs manual feed optimization: AI optimizes a product feed in minutes while manual upkeep takes weeks. See the real time math and where feed rules still win.
7 min readGoogle Shopping Product Images: The Complete 2026 Guide
Google Shopping product images: minimum resolution, product fill, banned overlays, and how a lifestyle image boosts clicks. Check yours free now.
10 min readFeed Rules vs Supplemental Feeds: Which One to Use
Feed rule or supplemental feed? This decision guide reduces the choice to one question and shows which Merchant Center tool fits your problem.
8 min readIndustry-Specific Title Formulas: Data Analysis
Industry-specific title formulas: 831,000 products show toys scoring 74 and vehicle parts just 19 out of 100. See which formula actually fits each segment.
15 min readFeedOptimizer.AI vs Channable: Switch or Combine?
Keep Channable and still get better Google Shopping copy? What Channable's AI module really costs and when an optimization layer on top pays off.
10 min readGoogle Shopping Multi-Country Setup: The 2026 Guide
Set up a Google Shopping multi-country setup for the US, UK, and EU: target countries, feed labels, currency, and tax, done right. 2026 guide.
10 min readState of Google Shopping Feeds Q2 2026: 487K Products Analyzed
Google Shopping feeds, benchmarked: 290 feeds, 487,000 products, average Quality Score 55.9/100. See the country breakdown and what it means for your feed.
7 min readFeedOptimizer.AI vs DataFeedWatch: Deep Dive Comparison
FeedOptimizer.AI or DataFeedWatch? See the pricing math by catalog size, AI depth vs. rules engine, and who actually benefits from switching.
11 min readHow to Assign the Right Google Product Category (2026)
Assign google_product_category correctly: why the wrong category inflates CPC, how deep to go, and whether ID or text path is the smarter choice.
11 min readGoogle Shopping Custom Labels: 2026 Strategy Guide
Use custom labels the right way: segment your feed by margin, bestsellers & season, control bids, and lift ROAS. With a framework, examples, and feed rules.
11 min readTitle Optimization: What 324,000 Product Titles Reveal About CTR
Title optimization by the numbers: 324,000 Google Shopping titles show 57% empty space, quality scores jump from 61.6 to 96.1, and what it means for your CTR.
8 min readFeed Automation 2026: Tools & Workflows Explained
Feed automation in 2026: which tools and workflows sync, enrich, and optimize your Google Shopping feed automatically, with studies and a practical setup guide.
11 min readFeed Error Benchmark: Most Common Merchant Center Issues
Feed error benchmark: real data from 496,603 products reveals the most common Merchant Center errors. Average feed quality score: just 44/100.
9 min readReduce Google Shopping CPC: 5 Levers for Cheaper Clicks 2026
Reduce your Google Shopping CPC with 5 levers: feed quality, negative keywords, campaign structure, and bidding. Plus 2026 CPC benchmarks and a worked example.
12 min readGoogle Merchant Center Next: New Features in 2026
Merchant Center Next 2026: every new feature from the Content API shutdown to new feed attributes and AI Performance Insights, with deadlines and action items.
10 min readHow to Improve Google Shopping CTR: 7 High-Impact Levers
Improve your Google Shopping CTR with 7 feed levers, not bigger bids: titles, ratings, images, and price annotations that measurably lift your clicks.
11 min readGoogle Shopping Feed Attributes: The Complete 2026 Guide
Every Google Shopping feed attribute explained: required, recommended, and category-specific. Includes the 2026 spec changes and an optimization checklist.
11 min readPerformance Max vs Standard Shopping: The 2026 Comparison
Performance Max vs Standard Shopping 2026: ROAS benchmarks, a decision matrix, and why your feed decides the performance of both campaign types.
13 min readHow to Fix Google Merchant Center Disapprovals: 2026 Guide
Fix Google Merchant Center disapprovals: price mismatch, images, GTIN and the dreaded misrepresentation account suspension, step by step. 2026 guide.
12 min readGoogle Shopping GTIN Requirements: The 2026 Compliance Guide
Google Shopping GTIN requirements 2026: when GTINs are mandatory, when identifier_exists=false is allowed, and how to bulk-fix missing GTINs in your feed.
13 min readGoogle Merchant Center Setup: The 2026 Step-by-Step Guide
Google Merchant Center setup for 2026: account, website verification, shipping, and your first primary feed. Plus the misrepresentation suspension playbook.
12 min readAI Feed Optimization for Google Shopping: The 2026 Practitioner's Guide
How AI optimizes your Google Shopping feed, titles, descriptions, attributes, and categories, automatically. With studies, benchmarks, and workflow recommendations.
12 min readAI Product Descriptions for E-Commerce: The 2026 Guide
How to write AI product descriptions that rank and sell, avoiding the duplicate-content trap. With studies, a production workflow, and brand-voice tips.
13 min readCalculate Google Shopping ROI: Formulas, Benchmarks & Examples 2026
Calculate Google Shopping ROI: the exact formula, ROAS distinction, break-even value, 2026 industry benchmarks, and a worked example to copy.
16 min readImprove Performance Max Feed Quality: The Complete 2026 Guide
Feed quality is the single biggest lever for PMax performance. Learn which attributes matter, how to use custom labels, and avoid costly feed mistakes.
15 min readOptimize Google Shopping Product Descriptions: 2026 Guide
Optimize Google Shopping product descriptions: before/after examples, the 3-paragraph formula, AI tips, and a checklist for better performance.
16 min readWhich Feed Tool Fits You? By Shop System and Requirements, 2026
Feed management tools comparison 2026: DataFeedWatch, Channable, Feedonomics and more on pricing, AI features, and channels, plus the free path by shop system.
17 min readHow to Optimize Google Shopping Product Titles: The Ultimate Guide 2026
Optimize Google Shopping product titles to boost CTR by up to 88%. Industry-specific formulas, before/after examples, and expert tips. Read the guide.
20 min readSupplemental Feeds in Google Merchant Center: Everything You Need to Know
What is a supplemental feed, how do you set it up, and why is it the safest way to optimize your Google Shopping product data? Free step-by-step guide for 2026.
4 min read7 Common Google Shopping Feed Errors and How to Fix Them
Google Shopping feed errors cost you visibility and revenue. These are the 7 most common ones, how to spot and fix them, with practical examples.
5 min read