Google Shopping Tips - how to avoid the Top 10 mistakes

 Google Shopping Ads are an optimal solution for advertising products online.

Especially when starting with Google Shopping, error messages can waste valuable time and cost a lot of budget.

To ensure you achieve the best performance from your Google Shopping Ads in the future and save time and budget, the Label Up team has summarized the 10 most common mistakes. To kickstart your Google Shopping effectively, you should be able to fix the following mistakes:

Google Shopping Hacks for Avoiding Errors:

1. Invalid or Missing GTIN

The GTIN (Global Trade Item Number) is a central identification feature of your products. If it is missing or incorrect, your product will not be displayed correctly – or in the worst case, completely rejected.

Especially with discounted prices, you must also specify the sale_price and the duration of the offer (sale price effective date) correctly, in addition to the regular price. Feed optimization tools help you keep track of frequent price changes and keep the feed up to date.

2. A Google Shopping No-Go: out-of-date Prices & Availability

Google wants to provide users with a reliable shopping experience. If the price or availability in the feed does not match your website, your ads will be ruthlessly rejected.

Worst Case: You change a price in the shop but forget to update the feed – and Google suspends the product.

3. Missing Product Identification Features: No Match, No Google Shopping Success

Google requires at least one of the following details: GTIN, brand or MPN (Manufacturer Part Number). Many shops mark these fields as "optional" – yet they are crucial for correct display.

Without identification, Google simply does not know what it is dealing with – and does not display your product or shows it incorrectly.

4. Unclear Additional Conditions: Confusion Costs Trust

Taxes, shipping costs & other fees must be transparently stated. If this information is missing or incorrect, Google can suspend your ads.

5. Non-Optimized Titles & Descriptions = Wasted Potential

In Google Shopping, the content in the feed determines visibility. Titles and descriptions should be search engine optimized, precise, and clearly structured.

Common mistakes:

• Only uppercase letters

• Missing keywords

• Irrelevant information

Best Practice for Titles:

• Max. 150 characters

• Keyword at the beginning

• No promotional language or emojis

• Clear, neutral language

6. Incorrect Product URLs: No Target, No Click

The product URL specified in the feed must exactly match the actual landing page. No redirects, no intermediaries.

Problem: If Google cannot access the product page directly, your ad will be disabled. 

7. Unsuitable or Missing Images: No Clicks Without Aesthetics

Images are THE conversion factor in the shopping feed. Poor quality, incorrect sizes, or watermarks not only lead to rejections – they also kill your CTR.

Google guidelines for images:

• Minimum size: 100 x 100 px (250 x 250 for clothing)

• Optimal: ≥ 800 px

• No text, logo, or watermark

• White background, sharp image

• Product must account for 75–90% of the image

8. Incomplete Product Data – A Classic With Consequences

If essential fields such as title, description, price, availability, or currency are missing, your feed will be marked as incomplete.

Consequence: Your products are not displayed or only displayed to a limited extent – and you waste budget on clicks for non-competitive ads.

Checklist for a complete product:

• ✅ Title

• ✅ Description

• ✅ Price & Currency

• ✅ Availability

• ✅ Product Image

• ✅ GTIN/MPN/Brand

9. No Own CSS - Wasted Costs Without Control 

Without being a CSS partner yourself and utilizing Google's service, you waste up to 20% Cost per Click. You have no influence over the margin, do not host the URL yourself, and do not have any additional branding.

If you become a CSS partner as a Google Shopping agency or shop, you can customize your own price comparison page to your branding, your products appear reliably and clicks on the name of your price comparison page are free. 

10. Not Utilizing Merchant Center Potential

The Merchant Center offers many more segmentation options than are utilized by most. Many overlook the amount of data, and the more products are in the feed, the harder it is to keep track.

Conclusion: These Google Shopping Hacks Save You Time, Money, and Nerves

Many retailers use Google Shopping, but only a few realize its full potential. Most mistakes happen not out of negligence but because the system is complex and Google provides little transparency.

With the right Google Shopping tips and a clean setup in the Google Merchant Center, you can avoid many pitfalls: from faulty feeds to unclear image guidelines to missing custom labels.

Those who also become a Google CSS partner not only save up to 20% CPC but also secure full control over their placements. Tools like Label Up help you identify the true performance champions in your product feed and scale them specifically.