Last updated: 2026-05-29
Marketplace Lens is a browser extension that filters Facebook Marketplace listings locally in your browser. This policy explains exactly what it does and does not do with data.
Nothing. Marketplace Lens has no backend server and no analytics. The developer never receives your settings, your browsing, your location, or any other data.
Your filter preferences — including your chosen center location (a ZIP code or
“City, ST” you type) and its resolved coordinates — are saved using the
browser’s chrome.storage.sync API. This data lives in your own browser and,
if you have Chrome/Brave sync enabled, in your own Google account. It is never
transmitted to the developer.
To enforce a strict mile radius, the extension converts place names into coordinates (“geocoding”). For this, and only this, it sends limited text to two free, no-account third-party services:
geocoding-api.open-meteo.com) — receives the
city/state text of listings and of your chosen center.api.zippopotam.us) — receives a US ZIP code when you set
your center as a ZIP.These requests contain only place names or ZIP codes. They do not include your identity, your Facebook account, your browsing history, or any listing details beyond the location string. Results are cached locally to minimize requests. Use of these services is subject to their own privacy policies.
The extension also reads and modifies the content of Facebook Marketplace pages you visit (to hide listings and to set Facebook’s own filter URL parameters). This processing happens entirely in your browser; nothing from those pages is sent to the developer.
Questions or concerns: open an issue at
https://github.com/realbcole/marketplace-lens/issues.
Material changes to this policy will be reflected here with an updated date.