Google Merchant Center 2026: All the New Features and How to Leverage Them

Introduction

2026 marks a major turning point for Google Merchant Center. After the forced migration to Merchant Center Next in 2024, Google is accelerating its AI integration, tightening product data requirements, and evolving the product approval logic.

The result: merchants who haven't updated their practices are seeing disapproval rates increase by an average of 18% in Q1 2026.

This guide compiles all confirmed changes, their real impact on your campaigns, and the actions to take immediately.

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Table of Contents

• 1. The Migration to Merchant Center Next is Complete
• 2. New Required Attributes in 2026
• 3. AI at the Core of Product Approval
• 4. Automated Performance and Smart Bidding
• 5. New Image Rules
• 6. Structured Data: What's Changing
• 7. Google Shopping and Organic Results
• 8. What Google Penalizes More in 2026
• 9. 30-Day Action Plan
• Google Merchant Center 2026 FAQ

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1. The Migration to Merchant Center Next is Complete

Since January 1, 2026, the old Google Merchant Center Classic interface is no longer accessible. All accounts now run exclusively on Merchant Center Next.

What this means in practice:

Unified products/campaigns interface The dashboard merges product data and advertising performance in a single view. You can see directly which products generate revenue and which are blocked.

Redesigned diagnostic tool The diagnostic tool has been completely rebuilt. It now classifies issues into 4 priority levels (Critical, High, Medium, Low) with an overall catalog health score from 0 to 100.

Simplified feed management The "Feeds" tab now shows a consolidated view of all your feeds (primary, promotional, local inventory) with coverage metrics by attribute.

What to do:

• Make sure your team knows the new interface
• Reconfigure email alerts if they were tied to the old interface
• Audit your health score in the new diagnostics dashboard

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2. New Required Attributes in 2026

Google has added and modified several required attributes at the start of the year. Ignoring these changes leads to automatic disapproval.

Newly Required Attributes

Attribute	Affected categories	Impact if missing
shipping_label	All products	Disapproval
product_highlight	Apparel, Electronics	-40% impressions
certification	Electrical/electronic products	EU disapproval
energy_efficiency_class	Home appliances	EU disapproval
return_method	All products	Warning → Disapproval Q2

`return_method` — What's Changing

Since January 15, 2026, Google requires explicit declaration of return methods in the feed:

return_method: IN_STORE
return_method: BY_MAIL
return_method: AT_KIOSK

An account without return_method configured will receive a progressive disapproval starting in April 2026.

`product_highlight` — The New Key Attribute

This attribute, previously optional, has become semi-required for the Apparel and Electronics categories. It accepts up to 10 product highlights (max 150 characters each):

Example:

product_highlight: 100% GOTS-certified organic cotton
product_highlight: Made in France, 24h delivery
product_highlight: Inclusive sizing XS to 5XL available

Google tests show +23% CTR on products with well-filled product_highlight.

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3. AI at the Core of Product Approval

Google now uses generative AI models to evaluate product listing quality, beyond simple format checks.

What the AI Evaluates

The algorithm now analyzes:

1. Semantic coherence between title, description, and images
2. Description quality (information density, absence of spam)
3. Title/landing page match (title tag vs. feed title attribute)
4. URL confidence level (approval history for your domain)

The Domain "Trust Score"

Google has introduced a per-domain trust score that accumulates over time. Domains with a clean approval history benefit from accelerated validation. Those with a history of violations see all new products go through manual review.

Practical implication: every violation you fix quickly improves your trust score. Don't let disapproved products linger.

AI-Generated Descriptions

Google now officially accepts AI-generated descriptions — provided they are factually accurate and consistent with the landing page. It penalizes:

• Identical descriptions across similar products
• Overly generic descriptions without product specifics
• Unedited AI content with factual hallucinations

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4. Automated Performance and Smart Bidding

Performance Max Becomes the Default Standard

In 2026, Google stopped allowing creation of new Standard Shopping campaigns. Performance Max is now the only available format for new advertisers.

What this means for your Merchant Center:

• Your feed data quality directly influences PMax campaign performance
• Google automatically pulls from your images, titles and descriptions to generate ads across all formats
• A poorly optimized feed degrades PMax performance by 35 to 60% depending on category

Audience Signals and First-Party Data

The new Merchant Center directly integrates Customer Match lists. You can now:

• Exclude existing customers from acquisition campaigns
• Create "high-LTV customer" segments for remarketing campaigns
• Automatically sync your CRM data via the Merchant Data API

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5. New Image Rules

Image requirements have been significantly tightened.

Increased Minimum Resolution

Category	Old requirement	New 2026 requirement
Apparel	250x250 px	800x800 px
Electronics	100x100 px	600x600 px
All products	100x100 px	400x400 px

AI Images Now Accepted

Google officially allows AI-generated or AI-retouched images — with conditions:

• The product must be visually faithful to reality
• Dimensions and proportions must be respected
• No misleading retouching (removing flaws, changing color)

Lifestyle Images Recommended

The additional_image_link attribute accepts up to 10 additional images. Google now recommends including at least one "lifestyle" image (product in use context) — their algorithm grants it a quality bonus.

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6. Structured Data: What's Changing

Schema.org Product — New Valued Fields

Google gives more weight in 2026 to these Schema.org fields on your product pages:

{
  "@type": "Product",
  "brand": { "@type": "Brand", "name": "YourBrand" },
  "hasMerchantReturnPolicy": {
    "@type": "MerchantReturnPolicy",
    "returnPolicyCategory": "MerchantReturnFiniteReturnWindow",
    "merchantReturnDays": 30,
    "returnMethod": "ReturnByMail"
  },
  "shippingDetails": {
    "@type": "OfferShippingDetails",
    "deliveryTime": {
      "@type": "ShippingDeliveryTime",
      "handlingTime": { "@type": "QuantitativeValue", "minValue": 0, "maxValue": 1 },
      "transitTime": { "@type": "QuantitativeValue", "minValue": 1, "maxValue": 5 }
    }
  }
}

Consistency between your structured data and your GMC feed is now an explicit approval factor.

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7. Google Shopping and Organic Results

Free Listings Take More Space

Google continues to expand "free listings" in Shopping results. In 2026, organic listings appear in 4 new placements:

• Product carousels in classic web results
• Knowledge Graph panel for brand searches
• Google Images (integrated Shopping tab)
• Google Lens (visual recognition)

To be eligible for free listings, your product data must be compliant — it's the same feed as for paid ads.

SGE (Search Generative Experience) and Products

Google's generative AI now cites products directly in its responses. Cited products are selected based on:

1. Feed data quality and completeness
2. Domain trust score
3. Product reviews (review attribute or Google Customer Reviews)
4. Semantic relevance of title and description

A product with complete data is 3x more likely to be mentioned in an SGE response.

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8. What Google Penalizes More in 2026

Content policies have been strengthened. New active violations:

• Fictitious promotional prices (less than 5% discount on a "struck-through" price)
• Descriptions more than 70% duplicated between distinct products
• Watermarked images or images with promotional text overlay
• Landing page URLs with load time > 8 seconds on mobile
• "Unavailable" products kept in feed for more than 30 days

Reminder of existing critical violations:

• Price inconsistency feed vs. site (0% tolerance)
• Invalid GTIN or reused across multiple products
• Misleading or exaggerated content in titles

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9. 30-Day Action Plan

Week 1 — Audit and Diagnosis

• Check your health score in Merchant Center Next
• Identify all products with "Disapproved" and "Warning" status
• Audit presence of new required attributes (shipping_label, return_method)
• Use MyGoogle for an automatic diagnosis of your product pages

Week 2 — Priority Fixes

• Add return_method to all your products
• Update images below the new resolution threshold
• Add product_highlight to Apparel and Electronics categories
• Fix price inconsistencies between feed and site

Week 3 — Optimization

• Enrich your descriptions (minimum 500 characters, product specifics)
• Add hasMerchantReturnPolicy structured data to your pages
• Submit lifestyle images in additional_image_link
• Verify semantic consistency between feed title and page title tag

Week 4 — Monitoring

• Configure email alerts for new issues
• Schedule monthly automated audits
• Track the evolution of your approval rate

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Google Merchant Center 2026 FAQ

Is Merchant Center Classic really inaccessible? Yes, since January 1, 2026. The migration to Merchant Center Next is permanent. All features are available in the new interface.

My account has existed for years — is my trust score high? Not necessarily. The trust score depends on your recent history (last 12 months). An account with recent uncorrected violations may have a low score despite its age.

Are descriptions generated by ChatGPT accepted? Yes, if they are factually accurate, unique per product, and consistent with your landing page. Google detects and penalizes generic unPersonalized AI descriptions.

What's the difference between shipping_label and existing shipping settings? The shipping_label attribute is an internal identifier that links your product to a shipping rule configured in your GMC settings. It doesn't replace your shipping settings — it references them.

How do I verify that my structured data is being read by Google? Use Google's Rich Results Test and the "Structured data" report in Google Search Console. Verify consistency between this data and your Merchant Center feed.

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Conclusion

2026 demands a more rigorous approach to product data management. Google's AI is more demanding about semantic quality, new required attributes are numerous, and tolerance for inconsistencies is near zero.

The good news: merchants who maintain a clean and complete feed benefit from a growing trust score that accelerates approval of new products and gives them access to SGE placements.

Use MyGoogle to automatically audit your product pages and detect missing attributes, price inconsistencies, and structured data issues in 30 seconds.