Glossary
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product-feed
E-commerce product feed: definition of Google Shopping and Meta feeds, GTIN, price, and stock attributes, vs catalog export, Shopify Merchant Center, and best practices.
Updated on
June 4, 2026
The product feed (product feed, flux produits) is an automated file or feed that transmits your product catalog data to a third-party platform according to its rules: Google Merchant Center, Meta Catalog, comparison engines, or marketplaces. It powers Google Shopping, dynamic ads, and social catalogs. It is distinct from a generic catalog export (CSV backup, ERP).
Summary
Definition: feed, catalog, export, channel
The product feed is a formatted view of the catalog, optimized for a channel that does not read your Shopify store directly.
Common attributes (Google Shopping).
id: unique variant identifier (SKU). title: product title (length and keywords controlled). description: descriptive text.
link: product page URL. image_link: main image (public URL). price: and sale_price: price including tax with currency.
availability: in stock, out of stock, preorder. gtin: / mpn / brand: product identification. google_product_category: Google taxonomy.
condition: new, refurbished, used.
Technical formats.
XML: Google Merchant standard (RSS 2.0 + g: namespace). CSV / TSV: manual or scheduled upload. API sync: Shopify to Google/Meta in near-real-time.
Useful distinctions.
Product feed: vs catalog export: the feed respects the rules of a channel (Google, Meta); the Shopify CSV export is generic (ops, ERP). Product feed: vs product catalog: the catalog is the source; the feed is the channel's projection of it. Shopping feed: vs Google Shopping: the feed feeds Merchant Center; Shopping is the consuming advertising surface.
Product feed: vs schema.org structured data: the feed goes to Google Merchant; the schema enriches the HTML page for SEO. Static feed: vs automatic sync: uploaded file vs Shopify-to-channel connection. Product feed: vs sales channel: the feed powers ad discovery; the channel also manages orders and inventory.
Why the product feed matters in e-commerce
Without a proper feed, your products will not appear (or will appear poorly) in Google Shopping, Performance Max campaigns, or dynamic Meta catalogs.
Ads visibility: the basis of product ads (acquisition). Ad quality: accurate title, image, and price = better relevance. Platform compliance: approved vs. disapproved products (Google policies).
Up-to-date inventory and prices: avoid running ads on out-of-stock products or incorrect prices. Dynamic remarketing: Meta and Google retargeting based on viewed products. Multichannel: one source catalog, multiple feeds (Google FR, Google BE, Meta).
Price comparison engines: Le Guide, Idealo (depending on the market).
Frequent feed errors (missing GTIN, image too small, checkout price mismatch) lead to Merchant Center disapprovals and wasted ad spend on non-serving ads.
Structure and quality of a product feed
Google feed workflow on Shopify is structured around several complementary elements.
Complete Shopify catalog (images, EAN, price incl. VAT). Google & YouTube: connection via Google & YouTube channel or feed app. Sync to Merchant Center (automatic or file).
Diagnostics: errors, warnings, active products. Correction in Shopify (source), resync. Launching Shopping / PMax campaigns.
Common Merchant Center errors.
Missing GTIN: missing EAN on products requiring an identifier. Image too small: minimum 100×100 px (250×250 recommended). Price mismatch: feed price ≠ landing page price.
Out of stock: not updated. Policy violation: prohibited product, health claims... Incorrect currency: currency inconsistent with target country.
Product feed on Shopify
Shopify synchronizes the catalog to multiple channels via Sales channels (Shopify Help Center, Google & YouTube).
Google & YouTube: sync Merchant Center, approved products for Shopping. Facebook & Instagram: Meta Catalog for ads and Instagram Shopping. Pinterest, TikTok: catalogs according to the market.
Shopify Markets: feeds by country (price, currency, URL). Feed apps: DataFeedWatch, Feedonomics, Multifeed (advanced rules, multi-country). Product publishing: activate per product/collection on each channel.
Shopify feed checklist.
High-resolution images, clean background, no excessive watermarks. Descriptive titles (brand + type + key attribute). GTIN completed when mandatory (EAN on variants).
VAT-inclusive price consistent with the product page (synchronized promotions). Stock tracked if dynamic availability. Monitor Merchant Center weekly (diagnostics).
Exclude drafts and non-marketable products.
The feed is an extension of the catalog: any product correction is made in Shopify, not by editing the XML manually (except in the case of an external master PIM).
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Points of attention for a reliable feed
Shopify as single source of truth: prices, stock, images up to date before sync. Dedicated feed titles: if the app allows it (SEO listing ≠ Shopping title). Google Categories: filled in for relevance.
Frequent sync: preferably automatic (promo prices, stockouts). Feed by market: localized currency and URL (Markets). Monthly audit: rate of active vs. disapproved products.
Align landing page: feed URL = live product page, no 404.
In brief
Product feed: = data feed catalog formatted for Google, Meta, comparison engines. Key attributes: id, title, price, image, availability, gtin, link. Distinct from CSV catalog export, source catalog, HTML schema.
Challenges: Shopping ads, remarketing, compliance, up-to-date inventory/price. Shopify: Google, Meta, Markets channels, feed apps; correct at the source.
Associated terms, FAQ, and going further
Associated terms
Product catalog: source of the feed. Catalog export: generic extraction, not channel feed. Google Merchant Center: Google feed destination.
Google Shopping: ads surface powered by the feed. Sales channel: multi-channel catalog sync.
FAQ
Product feed and catalog export: what's the difference?
The catalog export is a generic file (CSV backup, ERP). The product feed complies with the format and attributes required by a platform (Google Merchant, Meta Catalog) to distribute ads or social catalogs.
How to create a Google Shopping feed from Shopify?
Install the Google & YouTube channel in Shopify, connect your Merchant Center account, publish the products, and let the automatic sync power the feed. Correct errors flagged in Merchant Center by modifying the Shopify product pages.
Is a GTIN required in the feed?
For many categories, Google requires a GTIN (EAN, UPC, etc.) if the product has an official one. Without a valid identifier, the product may be limited or disapproved. Fill in the barcode on each Shopify variant.
How often should the feed be updated?
Automatic sync via the Shopify channel is recommended (several times a day). A manual upload is only suitable for small, stable catalogs; as soon as there are promotions or variable inventory, automate.
Go further
What is Google Shopping?. Google Shopping and sales. Google Shopping Ads ranking.
E-commerce product catalog. Back to the Qstomy e-commerce glossary.
Sources: Shopify Help Center (Google channel), Google Merchant Center documentation (product data specification).
Enzo
June 4, 2026
