Your website is now ad copy: check Meta's "Detected offers" before Black Friday

What was found

On Nov. 6, Meta advertising specialist Bram Van der Hallen posted on LinkedIn that "Meta may now automatically detect offers from your website and use them in your Meta ads. Even when you have turned off this option for your original ad." PPC Land reviewed the screenshots he shared, and Social Media Today followed up.

• Where the setting lives. Commerce Manager → Settings → Offer merchandising.
• The main switch. Under "All ads," a checkbox called "Detected offers": "Display offers detected from your website and ads."
• Two more for shop ads. Under "Ads leading to shop or product browsing": "Sale events" and "Seasonal event names."
• Meta's own notice. When you duplicate an ad: "eligible promotions can appear with your new ad, even though promotions are turned off for your original ad."

What isn't known yet, per PPC Land: whether these boxes are on by default, when the setting appeared, and whether every advertiser sees the page or only those with a shop or catalog. PPC Land says it could not find Meta documentation for these settings.

Why it matters right now

Black Friday is Nov. 27 and Cyber Monday is Nov. 30. Retailers commonly run several offers at once at this time of year: sitewide sales, email-only codes, loyalty discounts. Refreshing creative usually means copying ads. That's exactly when an offer meant for one audience can show up somewhere else, under your brand name.

A 10-minute check

1. 01Open the settingIn Commerce Manager, go to Settings → Offer merchandising.
2. 02Decide on "Detected offers"It sits under "All ads." If you don't want Meta adding offers it finds, untick it.
3. 03Check shop adsIf you run shop or product-browsing ads, review "Sale events" and "Seasonal event names" too.
4. 04Preview every copyAfter duplicating an ad, check the preview for offers you didn't add.
5. 05Clean up your siteRemove expired codes and old promo banners that an automated system could still read.

The bigger lesson

Ad platforms now read your website to write parts of your ads. That makes your site a source of truth for automated systems, not just for visitors. The same goes for search engines and AI assistants: whatever your pages say about prices, offers and claims can be pulled into places you never see. Keep it accurate, current and consistent.

That's how we run paid media on Meta, Google and YouTube, SEO and GEO for AI answers as one system. For Shopify stores, see how AI shopping agents read your store.

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