What is a tracking pixel?

Tracking pixels are small, invisible images embedded in emails or web pages that collect data about user behavior. When a user opens an email or visits a web page with a tracking pixel, information such as IP address, device type, and user actions are sent back to the server. Marketers and website owners use tracking pixels to measure the effectiveness of campaigns and understand user engagement. While they help optimize marketing strategies, tracking pixels also raise privacy concerns, so their use is often regulated.