Dossier is a free Chrome add-on designed for gamers who use Faceit, enabling users to mark other players with emojis based on their past performance. This tool enhances the social gaming experience by allowing players to categorize their interactions with others through a simple emoji system. Users can easily access a drop-down menu filled with various emojis, making it straightforward to assign a visual cue to a player's profile that reflects their play style.

The add-on operates solely through local storage, ensuring that all emoji assignments are saved directly on the user's device. This means that choices made with Dossier are not synchronized across different computers and are not stored online, providing a degree of privacy and control over how users choose to remember their gaming encounters. Overall, Dossier serves as a practical tool for organizing player interactions on Faceit.