How to Spot Fake Product Photos on Facebook Marketplace and Craigslist

A man in Denver found what looked like an incredible deal: a 2022 MacBook Pro listed on Facebook Marketplace for $400, roughly half the going rate. The listing had four clean, well-lit photos of the laptop from different angles. The seller said he was moving out of state and needed it gone fast. The buyer sent $400 through a peer-to-peer payment app. The laptop never arrived. The seller's account vanished. When he later ran the listing photos through an AI image detector, every single one came back as AI-generated. The laptop in those pictures never existed.

Fake product listings on Facebook Marketplace, Craigslist, and OfferUp have surged as AI image generation tools become more accessible. Scammers no longer need to steal photos from legitimate listings or photograph items they don't own. They can generate realistic product photos from scratch in seconds. Our AI Image Detector helps you spot these fakes before you send money to a stranger.

Why Fake Listings Are Harder to Spot Now

In the past, scammers typically stole photos from real listings, retail websites, or manufacturer pages. Buyers could catch these by doing a reverse image search. AI-generated product images changed the game. These images are unique — they won't appear anywhere else on the internet. They look professional and realistic. And they can be generated for any product in seconds.

This is why visual detection tools are essential. Our AI Image Detector identifies the subtle patterns and artifacts that AI generators leave behind, even in photos that look perfectly real at first glance.

Common Items Targeted by Fake Listings

Scammers focus on items where buyers are motivated by a deal and willing to pay before seeing the product:

• Electronics: Laptops, gaming consoles, smartphones, tablets, and high-end headphones
• Designer goods: Handbags, shoes, watches, and sunglasses from luxury brands
• Vehicles: Cars, trucks, and motorcycles listed at below-market prices
• Furniture: High-end pieces like standing desks and ergonomic chairs
• Sneakers and streetwear: Limited-edition releases and collaboration pieces
• Power tools: Expensive brands listed at steep discounts

If a price looks too good for any of these categories, that alone warrants a photo check.

How to Screenshot Suspicious Listings

Capture the listing photos properly so the detector has good material:

1. Open the listing and tap on each product photo individually to view it at full size.
2. Screenshot each photo separately. Don't screenshot the listing overview where images appear as small thumbnails — low resolution reduces detection accuracy.
3. Save all photos from the listing. A scammer might mix one real photo with several AI-generated ones.
4. Include photos from different angles, since AI-generated image sets often have inconsistencies between angles.
5. Save directly if possible rather than screenshotting. On many platforms you can long-press on an image to save it.

How to Upload to the AI Image Detector

Once you have the listing images saved:

1. Open our AI Image Detector on your phone or computer.
2. Upload the first product photo by tapping the upload area or dragging the image in.
3. Wait for the analysis. The detector examines the image for signs of AI generation, digital manipulation, and stock photo characteristics.
4. Review the results, noting the confidence score and any flagged areas.
5. Repeat for each additional photo in the listing.

Visual Red Flags the Detector Catches

Signs of AI-Generated Product Photos

• Too-perfect lighting: Real photos taken by sellers in their homes have uneven lighting, shadows from overhead fixtures, and color casts from walls. AI-generated images often have studio-perfect lighting with no imperfections.
• Clean, generic backgrounds: Real sellers photograph items on their kitchen table, bed, or floor. There's usually some clutter or visible room in the background. AI images tend to have smooth, featureless backgrounds.
• Impossible reflections: On electronics and glossy surfaces, AI generators often produce reflections that don't match any realistic environment.
• Text and logo distortions: AI struggles with rendering text and brand logos accurately. Look for warped lettering, misspelled brand names, or logos that are close but not right.
• Texture inconsistencies: Materials like leather, fabric, and brushed metal have complex patterns. AI versions may have textures that repeat unnaturally or shift abruptly.
• Missing fine details: Ports, buttons, stitching, serial numbers, and other small details are often blurred, simplified, or absent in AI-generated images.

Signs of Stolen or Stock Photos

• White or studio backgrounds: If every photo shows the product on pure white with professional lighting, it's likely a stock photo, not one taken by the seller.
• Watermark remnants: Scammers sometimes poorly remove watermarks from stock photo sites. The detector can identify removal traces.
• Inconsistent quality: If some photos are high-res and professional while others are lower quality, the professional ones may be stolen from another source.

Other Red Flags Beyond the Photos

Combine photo analysis with these behavioral checks:

• The price is significantly below market value with a vague reason like "moving" or "need gone today."
• The seller refuses to meet in person or let you inspect the item before paying.
• They insist on payment through apps with no buyer protection, like Zelle or CashApp.
• The account is new with little history or no other listings.
• They pressure you to decide quickly, claiming multiple interested buyers.

Check It With Our AI Image Detector

Buying from strangers online always involves some risk, but you don't have to go in blind. The next time you find a deal that seems almost too good on Facebook Marketplace or Craigslist, take a few seconds to screenshot the listing photos. Upload them to our AI Image Detector and find out whether you're looking at real photos of a real item — or AI-generated images designed to separate you from your money. Check before you buy from strangers online.