Snapchat Dark Mode is a display option that changes the app’s interface from a bright white theme to a darker, black or gray theme. It’s designed to reduce eye strain, especially in low-light settings, and can also save some battery on devices with OLED screens. To enable it, go to your device’s settings or Snapchat’s app settings, look for “App Appearance” or “Theme,” and select “Dark Mode.” Once activated, the app interface will switch to the darker colors automatically.