Facebook Marketplace Scam Detector

Don't get scammed on Facebook Marketplace. Before you message a seller or agree to meet up, get an instant Scam Risk Score (0-100) with a full red-flag breakdown -- right on the listing page. Facebook Marketplace scams are everywhere -- fake sellers pushing you to pay with Zelle, Venmo, or gift cards before pickup; brand-new profiles posting "too good to be true" prices; copy-pasted listings using stolen stock photos; and urgent "must sell today" pressure tactics designed to stop you from thinking twice. This scam checker catches the patterns before you become the next victim. How it works Install the extension, then simply browse Facebook Marketplace like normal. On every item listing page, a small floating badge appears showing your Scam Risk Score, color-coded green (likely safe), yellow (suspicious), or red (high risk). Click the badge to expand a full signal-by-signal breakdown explaining exactly why a listing scored the way it did. Free -- 4 scam signals: - Price Far Below Market -- flags listings priced far under typical value for the item - Newly Created Seller Profile -- flags accounts that just joined Facebook - Urgency / Pressure Language -- flags "today only," "first come," "need gone asap" tactics - Risky Payment Request -- flags Zelle, Venmo, Cash App, wire transfer, gift cards, pre-pickup deposits, and "I'll ship it" offers on local items Pro ($4.99/mo) -- unlocks 3 more signals: - Generic / Copy-Paste Description -- detects templated, boilerplate listing text - Pushes Off-Platform Contact -- detects WhatsApp/text-me/email-me pushes and phone numbers in the description - Stock-Photo + Lowball Price Combo -- detects catalog-style identical photos paired with a suspiciously low price Built for privacy. This scam checker only reads the Facebook Marketplace listing page you're already viewing in your own logged-in browser. There is no background polling, no scraping beyond what's on your screen, and no listing data is ever sent anywhere -- scoring happens entirely on your device. The only network request this extension ever makes is license validation if you activate Pro. Built for Facebook's constantly-changing layout. Facebook Marketplace uses auto-generated, unstable class names that break most scrapers within weeks. This extension never relies on class names -- it reads listings by structure, visible-text patterns, and page metadata, and gracefully shows "n/a" for any signal it can't read instead of guessing wrong.