Marketplace Atlas icon

Marketplace Atlas

A Chrome Extension that overlays Facebook Marketplace results with a map.

Manifest V3 OpenStreetMap No API key required

What is this?

Marketplace Atlas is a Chrome browser extension that overlays Facebook Marketplace search results with an interactive map. See exactly where listings are located without leaving the Marketplace page, and filter results by title or location at a glance.

🛒 Install from the Chrome Web Store

See it in action

Marketplace Atlas showing free items mapped across Los Angeles
Find free stuff near you! Search "free" and instantly see every giveaway plotted on the map — grab the best ones before anyone else.
Marketplace Atlas mapping Mac Studio Ultra listings
Hunt down hard-to-find tech. Rare gear shows up in unexpected places. The map reveals listings you'd never find just scrolling a list.
Marketplace Atlas mapping RTX 5090 GPU listings
Spot the best deal closest to you. Compare prices and distance at a glance — skip the long drives and go straight to the best value nearby.
Marketplace Atlas mapping garden trellis listings
Shop local for home and garden. From furniture to garden supplies, see exactly which neighbors are selling what — and how far away they are.

Use it

  1. Open Facebook Marketplace in Chrome.
  2. Search or browse until the listings you want appear.
  3. Click the Marketplace Atlas icon to show the map overlay.
  4. Use Facebook's left panel to change the search or filters.
  5. Click Refresh map after Facebook loads new results.
  6. Click Show my location to center the map on you (location permission required).
  7. Exact title match is on by default — turn it off to map every visible result.
Facebook does not expose stable public markup for Marketplace results, so the scraper prefers each listing link's accessibility label and falls back to visible text. If Facebook changes the page structure, the extension may need selector updates. Geocoding uses OpenStreetMap Nominatim, is rate-limited, and is cached locally for reuse.