Google Merchant Feed

Get your star ratings showing in Google Shopping results — so your products stand out before anyone even clicks through to your store.

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What This Does

You know when you search for a product on Google and some listings have star ratings underneath the price? That’s Google Merchant Center at work. It pulls review data from an XML feed and displays those stars alongside your product listings in Google Shopping.

Without a feed, your products show up in Google Shopping with just a title, price, and image. With a feed, they show up with star ratings and review counts — and that visual credibility makes a real difference to click-through rates.

Here’s the tiny house version: Trustie Pro generates an XML file that Google reads to learn about your product reviews. Google then uses that data to display stars on your Shopping listings.

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Requirements

Before you set this up, you’ll need:

1. A Google Merchant Center account — free to create at merchants.google.com
2. Products listed in Google Shopping — your product feed needs to be set up and approved (this is separate from Trustie — most stores use a plugin like Google Listings & Ads or a dedicated feed plugin)
3. Enough reviews — Google generally requires at least 50 total reviews across your store, with a minimum average rating (typically 3.5 stars or above)
4. Trustie Pro active — the merchant feed is a Pro feature

The review count requirement is Google’s, not ours. They want to make sure the star ratings they display are based on a meaningful sample size.

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Enabling the Merchant Feed

Step 1: Turn On the Feature

1. Go to Tracksies > Settings > Features (or Trustie > Settings > Features if running standalone)
2. Find Google Merchant Feed under the Trustie module
3. Toggle it on and save

Step 2: Check Your Feed URL

Once enabled, your feed is available at:

https://yourstore.com.au/wp-json/trustie/v1/merchant-feed

You can visit this URL in your browser to see the raw XML. It should list your products with their review data — ratings, review counts, and individual review details.

You’ll also find this URL displayed in Trustie > Settings > Google for easy copying.

Step 3: Connect to Google Merchant Center

1. Log in to your Google Merchant Center account
2. Navigate to Growth > Manage programs (or search for “Product Ratings” in the sidebar)
3. Find Product Ratings and click Get Started (or Enable)
4. When asked how you’d like to provide reviews, choose Add a third-party reviews feed
5. Enter your feed URL from Step 2
6. Submit for review

Google will fetch your feed, validate the format, and — if everything checks out — start displaying star ratings on your Shopping listings within a few days to a couple of weeks.

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What the Feed Contains

The XML feed follows Google’s Product Reviews Feed specification. For each reviewed product, it includes:

The feed automatically updates as new reviews are approved, so Google always has your latest data.

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Feed Settings

In Trustie > Settings > Google, you can configure:

Product Identifier Matching

For Google to match your reviews to your Shopping listings, the product identifiers in your review feed need to match the ones in your product feed. If your product feed uses GTINs, set the merchant feed to use GTINs too. If it uses SKUs, match on SKUs.

Not sure which identifier your product feed uses? Check your Google Merchant Center dashboard under Products — it’ll show you the identifiers for each listed product.

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Monitoring Your Feed

Feed Status in Google Merchant Center

After submitting your feed, Google Merchant Center shows its status:

Common Reasons for Disapproval

• Not enough reviews — you need around 50 reviews minimum across your store
• Identifier mismatch — product IDs in the review feed don’t match your product feed
• Policy violation — reviews must be from genuine customers, not fabricated
• Feed format errors — rare with Trustie (we generate valid XML), but check the error details

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How Long Until Stars Appear?

After Google accepts your feed:

• Initial processing: 2–4 weeks for Google to fully process and start displaying ratings
• Ongoing updates: Google fetches your feed periodically (typically daily) and updates ratings automatically
• Not every product: Stars only appear on products that have enough reviews. A product with 1 review might not show stars, while a product with 20 reviews likely will

Patience is key here. Google doesn’t guarantee star ratings on every listing, and there’s a ramp-up period while they validate your review data. If your feed is accepted and you have a healthy volume of reviews, the stars will come.

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Tips for Getting the Most Out of Merchant Feeds

1. Focus on Review Volume

The more reviews you have, the more products will show stars in Shopping results. Use email sequences to build your review count, or pair Trustie Pro with the Perkie add-on to reward customers with points or coupons for leaving approved reviews.

2. Keep Reviews Fresh

Google values recency. A product with 50 reviews from two years ago is less compelling (to Google and to shoppers) than one with 50 reviews from the last six months. Keep those review requests flowing.

3. Match Your Identifiers

This is the number one technical issue. If your Shopping product feed uses GTINs but your Trustie merchant feed uses WooCommerce IDs, Google can’t match them up. Double-check this before submitting.

4. Don’t Filter Out Low Ratings

It’s tempting to set a minimum rating of 4 stars so only great reviews appear in the feed. Don’t. Google wants authentic, unfiltered review data. A mix of ratings is more trustworthy than a wall of 5-star reviews, and Google may penalise feeds that appear cherry-picked.

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Common Questions

Do I need Google Ads to use this?
You need a Google Merchant Center account with products listed, but you don’t necessarily need to be running paid Shopping ads. However, Product Ratings are most commonly displayed on Shopping ads. Organic listings (free listings) may also show stars, but it’s less consistent.

Does this work with variable products?
Yes — reviews for product variations are rolled up to the parent product in the feed, which is how Google expects it.

How often does the feed update?
The feed is generated dynamically each time Google (or anyone) requests the URL. So it always reflects your current approved reviews.

Can I see what Google sees?
Yes — visit your feed URL in a browser. You’ll see the raw XML that Google reads. It’s not pretty (it’s meant for machines, not humans), but you can verify your products and reviews are included.

Will this affect my SEO?
The merchant feed itself doesn’t directly affect organic SEO — it’s specifically for Google Shopping results. For organic search, Trustie’s JSON-LD schema markup handles that separately.

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If Something’s Not Working

Feed URL returns an error:

• Check that the merchant feed feature is enabled in Settings > Features
• Verify your WordPress permalinks are set to something other than “Plain” (the REST API needs pretty permalinks)
• Try flushing permalinks: go to Settings > Permalinks and click Save Changes without changing anything

Google Merchant Center says the feed is invalid:

• Visit the feed URL yourself and check that it returns XML (not an error page)
• Make sure you have at least one product with an approved review
• Check the specific error message in Merchant Center — it usually tells you exactly what’s wrong

Stars not appearing after feed is accepted:

• Allow 2–4 weeks for initial processing
• Check that you meet the minimum review threshold (~50 reviews)
• Verify product identifier matching between your product feed and review feed

Still stuck? Drop us a line at support@tracksies.com and we’ll help you get it sorted.