Senf is a free browser extension designed to assist users in identifying articles on news sites that have been reported for propaganda or spin. It works in conjunction with its companion extension, "SponSpin," to alert users about such articles and provides links to the original news sources.

When browsing news websites like spiegel.de, Senf offers two methods for users to identify propaganda links. Users can click on news links to see if they have been reported, or they can quickly hover their mouse cursor over the links to trigger alerts with relevant forum links. Additionally, users can browse directly from the forum to access original articles with Senf's assistance. Senf emphasizes that it does not collect any personally identifiable information, ensuring user privacy and security.