Product Feed

What a product feed is

A product feed is a structured file (or API stream) that lists every product you sell with a defined set of attributes: ID, title, price, availability, image, and more, in the exact format a shopping platform like Google Merchant Center expects. It is the data pipe that lets your products show up in Shopping tabs, free listings, and Performance Max ads, and it is judged on data quality, not on how pretty your website looks.

The stakes are concrete: one malformed attribute can get an item disapproved, and a whole feed with mismatched prices or missing GTINs can get your account warned or suspended. A clean feed is the difference between products that show and products that quietly never appear.

Real feed attributes and a working example

Google Merchant Center reads a fixed vocabulary of attributes. Here is a minimal, valid row expressed as XML (the same fields exist as columns in a TSV/Google Sheet feed):

<item>
  <g:id>SKU-4471</g:id>
  <g:title>Merino Wool Base Layer - Men's Long Sleeve, Charcoal, L</g:title>
  <g:description>Lightweight 190gsm merino, odor-resistant…</g:description>
  <g:link>https://example.com/base-layer-charcoal-l</g:link>
  <g:image_link>https://example.com/img/4471.jpg</g:image_link>
  <g:availability>in_stock</g:availability>
  <g:price>89.00 USD</g:price>
  <g:brand>NorthRidge</g:brand>
  <g:gtin>00812345678905</g:gtin>
  <g:mpn>NR-BL-CHR-L</g:mpn>
  <g:condition>new</g:condition>
  <g:google_product_category>Apparel & Accessories > Clothing</g:google_product_category>
  <g:item_group_id>BL-MERINO-M</g:item_group_id>
</item>

Key rules baked into that example: id must be unique and stable, price must include a currency and match the landing page exactly (including tax display rules by country), availability must reflect real stock, and variants of one product share an item_group_id while each keeps its own id. Miss the GTIN on a branded product that has one, and Google may throttle or disapprove it.

Required vs recommended attributes

How to check your feed

1. Read the Diagnostics tab in Merchant Center. It lists disapproved and warned items with exact reasons. Sort by "Item issues" to see what is blocking the most products. (More on the platform in Merchant Center.)
2. Spot-check price and availability parity. Open five feed items and compare the feed price/availability against the live landing page. Mismatches trigger the most common suspensions.
3. Validate the feed file directly. Download the XML/TSV and confirm required columns exist for every row and that IDs are unique (a quick spreadsheet dedupe on the ID column exposes collisions).
4. Test the landing pages. Curl a sample of link URLs and confirm they return HTTP 200, not 301 chains or 404s.
5. Watch the feed processing log. After each fetch, Merchant Center shows fetched/valid/invalid counts; a sudden drop in valid items means something in your export broke.

Common disapproval reasons and fixes

FAQ

How often should my product feed update?

Match the update cadence to how fast your data changes. Prices and stock that move hourly need frequent updates (or a supplemental feed / real-time API); a stable catalog can refresh daily. The rule is that the feed should never lag the live site long enough to create a price or availability mismatch.

What is the difference between the product feed and Product schema on my pages?

The feed is a separate file you submit to a shopping platform; on-page Product schema is structured data embedded in the page HTML for organic rich results. They overlap in fields but are independent pipelines, and Google can cross-check one against the other, so keep price and availability consistent in both.

Do I need a GTIN for every product?

You need it whenever a valid GTIN exists for the item (most branded, manufactured goods). For genuinely unique products with no GTIN, such as handmade or custom items, you supply brand plus MPN instead and flag that no identifier exists.

Why are my products approved but getting no impressions?

Approval only means the data passed validation. Visibility depends on competitive bids or free-listing eligibility, title relevance, price competitiveness, and category accuracy. Tighten titles, fix the google_product_category, and confirm the items are opted into free listings.

Can one feed serve both Shopping ads and free listings?

Yes. A single well-formed feed in Merchant Center can power free product listings and paid Shopping/Performance Max at once, provided the items meet each program's policy. There is no need for separate feeds just to appear in both.

Related reading

• Merchant Center — the platform that ingests and judges your feed.
• Free Product Listings — unpaid placements your feed can earn.
• Out of Stock Pages — keeping availability honest across feed and site.
• Product Schema Guide — the on-page counterpart to feed data.