Glossary

What is a product feed? E-commerce definition

June 4, 2026

The product feed (flux produits) is an automated file or stream that transmits data from your product catalog to a third-party platform according to its rules: Google Merchant Center, Meta Catalog, comparison sites, 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

Why the product feed matters in e-commerce

Structure and quality of a product feed

Product feed on Shopify

Points of attention for a reliable feed

In brief

Associated terms, FAQ, and going further

Definition: feed, catalog, export, channel

The product feed is a formatted view of the catalog, optimized for a channel that does not directly read your Shopify store.

Common attributes (Google Shopping).

id: unique variant identifier (SKU). title: product title (length and protected keywords). description: descriptive text.

link: product page URL. image_link: main image (public URL). price: and sale_price: incubation 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 + namespace g:). 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. Shopping feed: vs Google Shopping: the feed feeds Merchant Center; Shopping is the consuming advertising surface.

Product feed: vs structured schema.org data: the feed goes to Google Merchant; the schema enriches the HTML page for SEO. Static feed: vs automatic sync: uploaded file vs Shopify channel connection. Product feed: vs sales channel: the feed powers ad discovery; the channel also manages ordering and stock.

Why the product feed matters in e-commerce

Without a clean feed, your products will not appear (or will appear poorly) in Google Shopping, Performance Max campaigns, or dynamic Meta catalogs.

Ads visibility: foundation of product ads (acquisition). Ad quality: accurate title, image, and price = better relevance. Platform compliance: approved vs. disapproved products (Google policies).

Up-to-date stock and price: avoid ads for 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 budget on non-delivered ads.

Structure and quality of a product feed

Google feed workflows on Shopify are structured around several complementary elements.

Complete Shopify catalogue (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. Launch of Shopping / PMax campaigns.

Common Merchant Center errors.

Missing GTIN: EAN missing 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, etc. 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: syncs Merchant Center, products approved 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 watermark. Descriptive titles (brand + type + key attribute). GTIN completed when mandatory (EAN on variants).

VAT-inclusive price consistent with the product page (synchronized promos). Stock tracked if active 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 done in Shopify, not by editing the XML manually (except in the case of a master external PIM).

Points of attention for a reliable feed

Shopify source of truth: updated prices, stock, and images before syncing. Dedicated feed titles: if the app allows it (product page SEO ≠ 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: active vs. disapproved product rate.

Align landing page: feed URL = live product page, no 404.

In brief

Product feed: = catalogue data flux formatted for Google, Meta, comparison engines. Key attributes: id, title, price, image, availability, gtin, link. Distinct from CSV catalogue export, source catalogue, HTML schema.

Challenges: Shopping ads, remarketing, compliance, up-to-date inventory/pricing. Shopify: Google, Meta, Markets channels, feed apps; correct at the source.

Associated terms, FAQ, and going further

Associated Terms

Product catalog: feed source. Catalog export: generic extraction, not a channel feed. Google Merchant Center: Google feed destination.

Google Shopping: ads surface powered by the feed. Sales channel: multichannel catalog sync.

FAQ

Product feed and catalog export: response?

The catalog export is a generic file (CSV backup, ERP). The product feed respects 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 reported in Merchant Center by modifying the Shopify listings.

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 rejected. Enter the barcode on each Shopify variant.

How often should the feed be updated?

The automatic sync via 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 stock, automate.