Facebook Dimmer is a Chrome add-on designed to help users reduce their time spent on Facebook. The program operates by gradually dimming the Facebook interface the longer you stay on the site. If you haven't visited Facebook for four hours, it appears normal. However, as time passes, the site becomes dimmer until it eventually becomes entirely invisible. To restore full visibility, users must wait for another four hours.

This tool offers a passive way to discourage excessive Facebook usage by visually reducing its appeal over time. By implementing this gradual dimming effect, Facebook Dimmer aims to promote healthier online habits without being overly intrusive.