Introduction
Kosmima24, a leading online jewelry retailer in Greece, wanted to improve the visibility of its best-selling products in Google Shopping Ads while simplifying the management of its product feed.
As the product catalog and number of advertising channels grew, maintaining accurate and optimized product data became increasingly time-consuming. Incorrect products appearing in campaigns, complex feed management, and reliance on third-party developers were slowing down marketing execution and limiting advertising performance.
The goal was to build a clean, well-structured, and automated product feed that would improve Google Shopping Ads results while giving the marketing team full control over feed management.
Challenge
The team faced several key challenges:
- Best-selling jewelry products were not receiving the visibility they deserved, reducing click-through rates and potential conversions.
- Products across different price ranges required different budgets and Target ROAS goals, making it difficult to optimize campaigns using a single bidding strategy.
- Product feed errors and unnecessary products negatively affected campaign performance and product matching.
- Dependence on third-party developers for feed changes created delays, increased communication overhead, and slowed marketing initiatives.
As a result, the marketing team spent valuable time maintaining product feeds instead of optimizing campaigns and growing sales.
Solution
Kosmima24 implemented Magelon Feed Optimization Tool together with Magelon CSS to improve Google Shopping performance and centralize product feed management.
The implementation included:
- Migration to Magelon CSS, enabling the company to benefit from Google’s CSS program while improving the visibility of its most valuable products.
- Top sellers segmentation, ensuring that best-selling jewelry products received higher priority within Google Shopping campaigns.
- Product segmentation by price range, enabling different budgets and Target ROAS goals for premium and lower-priced products to maximize campaign profitability.
- Feed cleanup and optimization, removing unnecessary products, correcting product data, and improving overall feed quality.
- Marketing team control over feed management, allowing updates and optimizations without developer involvement.
Results
After implementing Magelon Feed Optimization Tool and Magelon CSS, Kosmima24 achieved measurable improvements in both advertising performance and operational efficiency.
Performance Improvements
- +17% increase in Google Shopping CTR
- +24% improvement in ROAS
- Greater visibility for top-selling jewelry products through intelligent feed prioritization
Operational Improvements
- Up to 35% less time spent managing product feeds and campaigns
- Cleaner, more accurate product feed with fewer errors and unnecessary products
- Marketing team became independent from developers, allowing faster campaign execution and feed updates
By ensuring that the right products appeared in the right campaigns while automating feed management, Kosmima24 was able to improve advertising performance without increasing operational complexity.
“With Magelon, we significantly improved both the number and value of our conversions. Managing our product feed has become faster, easier, and no longer depends on developers.”
— Head of Marketing, Kosmima24
Conclusion
By combining Magelon Feed Optimization Tool with Magelon CSS, Kosmima24 transformed both its advertising performance and its day-to-day marketing workflow.
The company now benefits from:
- Higher Google Shopping performance through better visibility of best-selling products
- A cleaner and more organized product feed, free from unnecessary products and data issues
- Faster marketing execution, with the ability to update feeds without relying on developers
- A scalable workflow that allows the marketing team to focus on growth rather than technical maintenance