Facebook tracks you across the web through the Like buttons, comment widgets, and invisible pixels embedded on millions of sites — even if you never click anything. A few browser extensions cut that reach significantly.

uBlock Origin

The essential first layer. uBlock Origin (Firefox, Chrome) blocks ads and trackers at the network level. With default filter lists enabled it already blocks most Facebook tracking pixels and social widgets on third-party sites.

Note for Chrome users: Google's Manifest V3 transition limits some uBlock Origin capabilities in Chrome. The full-featured version remains available in Firefox.

Privacy Badger

Privacy Badger by the Electronic Frontier Foundation (Firefox, Chrome) takes a different approach: instead of using a static blocklist, it learns which trackers follow you across sites and progressively blocks them. Works well alongside uBlock Origin.

Facebook Container (Firefox only)

Facebook Container is a Mozilla extension that isolates your Facebook session in a separate container tab. Facebook can't see your activity on other sites, and third-party Facebook widgets on other sites can't read your Facebook session cookies.

This is the most effective single extension specifically targeting Facebook's cross-site tracking — and it's built and maintained by Mozilla.

Built-in browser protections

Both Firefox and Brave ship with enhanced tracking protection enabled by default, which blocks many known trackers including Facebook's. If you use either browser, you already have a solid baseline — the extensions above add more granular control on top.

If you use Chrome, consider switching to Firefox for better default privacy.