# What is review syndication, and who needs it? Review syndication shows one product's reviews on every site that sells it, matched by barcode. How it works, Google's rule, and what small shops can do. Author: Formgong Published: 2026-11-01 Language: en Canonical: https://formgong.com/en/blog/what-is-review-syndication/ Review syndication means showing reviews of a product on more than one website: a review written on the brand's site, or on one retailer's, also appears on other stores that sell the same item. Products are usually matched by barcode (UPC, EAN or GTIN). It is mostly run by large review networks between brands and retailers. For a shop, it fills empty product pages, but syndicated reviews should be labelled with where they came from, and Google says not to fold reviews from other websites into your own review markup. ## What review syndication is A shopper writes a review of a kettle on the brand's website. A week later the same review shows up under that kettle on two retailers' sites, with a note saying where it was first written. That is review syndication: one product's reviews, collected in one place and shown wherever the product is sold. The match is made by product code. The barcode on the box, called a UPC in the US and an EAN in Europe, and known together as a GTIN, is the same at every shop, so it is how systems tell that two listings are the same item. The review vendor PowerReviews says it does more than match barcodes, “rather than relying on UPC match alone”, which tells you that barcode matching is the industry's starting point. ## How it works between brands and retailers Syndication is mostly a big-company arrangement. A brand collects reviews on its own site through a review platform such as Bazaarvoice or PowerReviews. Retailers that sell the brand and use the same network receive those reviews and show them on their product pages. Bazaarvoice's help pages describe two roles a site can take, distribute-only and display-receive: some sites only send reviews out, others also show what they receive. For the brand, every review now works on many shelves at once. For the retailer, a new product launches with reviews instead of an empty box. The catch for smaller shops is that both sides have to be in the same network, and those networks are built and priced for brands and large retailers. ## The rules that come with it **Label where each review came from.** A shopper reading a syndicated review should be able to tell it was written somewhere else. A short “Originally posted at …” line next to it is the common way, and it also keeps you honest if the product at the other shop was a different version. **Keep it out of your own review markup.** Google's review snippet guidelines say plainly: “Don't aggregate reviews or ratings from other websites.” Stars in search results should come from reviews collected on your own site. So syndicated reviews can sit on your page for shoppers to read, but they should not feed the rating in your structured data. **Only the same product.** A review of a blue kettle is fine under the same kettle in black if the barcode family says it is the same model. A review of last year's model, or of a similar product from another brand, is not syndication, and showing it as if it were misleads shoppers. Our guide to the [EU rules on verified reviews](/en/blog/omnibus-directive-verified-reviews/) covers what you must tell shoppers about how you check reviews. ## Does a small shop need it? Mostly not, at least not through a big network. If you make your own products, nobody else sells them, and there is nothing to syndicate. If you resell branded goods, the brand's reviews may already be on its own site or on large retailers, and joining their network is out of reach for most independent shops. What a small shop can do is get more reviews of its own. A review request after each order brings in more than any feed; our guide on [when to send a review request email](/en/blog/when-to-send-review-request-email/) shows the timing that works. Importing your old reviews from a previous app keeps what you already earned, and [review schema markup](/en/blog/review-schema-markup/) puts your own stars in search. ## What we built, and what it is not Formgong has a smaller version of syndication between shops that use Formgong Reviews on Shopify. It is not a retailer network, so your reviews do not go to Walmart or Amazon, and a brand's reviews do not come to you. It does something smaller. Two independent Formgong shops that sell the same barcode can each choose to show the other's reviews of that product. This is how it works: How Formgong's review sharing behaves, from the code and its tests, 1 November 2026. QuestionAnswer How are products matched?By barcode (GTIN), and only a barcode Shopify itself reports for the product. A barcode typed into a review never counts. Who takes part?Only shops that turned sharing on. It is off by default, and a shop that does not share sees no one else's reviews. Which reviews travel?Approved reviews written on the shop's own site whose writer ticked an unticked box, “Other stores that sell this product may show my review”. Imported reviews stay home. Where do they appear?Under the shop's own reviews, headed “From other stores that sell this product”, each one marked with the store it came from. Up to 20, newest first. Do they change the shop's stars?No. They never count in the shop's average, review count, AI summary or search-engine markup. What if the original shop hides or deletes one?It disappears everywhere, because other shops read it live rather than keeping a copy. We wrote the rules this way because of the points above. The reviewer agrees before their words go to another shop. The label names the store. And shared reviews never touch your stars or your markup, so nothing borrowed can lift your rating in Google. We ran the feature's test suite on 1 November 2026 to check this page against the code: 6 of 6 tests passed, covering the barcode match, the opt-in on both sides, the separate list and the consent box. Two honest limits. It only works on Shopify, through our Shopify app, which has been in Shopify's App Store review since 14.10.2026. And it only helps if another Formgong shop sells the same product and shares too, so for most shops today the list will be empty. Everything else in Formgong Reviews, from photo reviews to the [Google product reviews feed](/en/docs/reviews-google/), works without it. ## Do you sell the same products as other shops? If you resell branded products and want your shoppers to see more reviews, tell us how you would want this to work at [support@formgong.com](mailto:support@formgong.com). Most of how sharing works today came from shop owners' questions. ## What Formgong Reviews includes for free - **Unlimited review sites and reviews.** Text, [photo, video and voice](/en/docs/reviews-media/) reviews on Free. - **A widget with no view limit.** The [review widget](/en/reviews/), carousel, badge and stars in product lists load as often as your pages do. - **Review emails in your store's name.** Sent after each order with your logo and colours, replies to you, no email service to set up; buyers can rate inside Gmail without leaving the email, and get one reminder ([how it works](/en/docs/review-emails/)). - **Bring your old reviews.** [Import](/en/docs/reviews-import/) from Judge.me, Yotpo, Loox, Shopify Product Reviews, WooCommerce, Etsy or a CSV. - **You decide what shows.** Approve each review or choose a [publishing mode](/en/docs/reviews-moderation/), reply in public or in private, and let shoppers ask the author a question. - **Google.** A Merchant Center review feed, and product rating markup through the WordPress plugin. - **Reviews from your form.** People who filled in your contact form can get a review request automatically. - **One account for the rest.** Contact forms with Telegram and Google Sheets, an [AI help chat](/en/docs/help-chat/), and free [website templates](/en/website-templates/). ## Frequently asked questions ### What is review syndication? Showing reviews of one product on every website that sells it. A review written on the brand's site or one retailer's also appears on other stores, matched by the product's barcode (UPC, EAN or GTIN). ### Can I put syndicated reviews in my review schema? Google's review snippet guidelines say not to aggregate reviews or ratings from other websites. Show syndicated reviews to shoppers, labelled, but keep your structured data to reviews collected on your own site. ### Is review syndication only for big brands? Mostly. The large networks connect brands and big retailers. Small shops gain more from collecting their own reviews after each order and importing reviews they already have. ### Does Formgong do review syndication? A small version: Formgong shops on Shopify that sell the same barcode can opt in to show each other's consented reviews, labelled with the store and kept out of their own stars. It is not a retailer network. ## Sources and documentation - [Google Search Central: Review snippet structured data guidelines](https://developers.google.com/search/docs/appearance/structured-data/review-snippet) - [PowerReviews: UGC syndication](https://www.powerreviews.com/syndication/) - [Bazaarvoice Knowledge Center: Syndication overview](https://knowledge.bazaarvoice.com/wp-content/brandedge-pro/en_US/syndication/syndication_overview.html) - [GS1: Global Trade Item Number (GTIN)](https://www.gs1.org/standards/id-keys/gtin) - [Reviews on Shopify](https://formgong.com/en/docs/reviews-shopify/) [Get a form key](https://formgong.com/en/#top)