What is the difference between a pixel and a cookie?

A pixel or tracking pixel is a transparent graphic embedded in a web page or an email to collect data from users. A cookie is a small piece of data stored on a user’s device by the user’s web browser when they visit a website. 

Key differences between pixels and cookies:

FunctionPixels are used for tracking user behaviour and collecting data about their interactions with web content.Cookies are used for storing user-specific information such as login details and preferences, as well as tracking and profiling user behaviour.
StoragePixels are not stored on the user’s device but are instead embedded in web content. Cookies are stored on the user’s device by the web browser.
User controlPixels cannot be directly controlled by users, as they are embedded in web content. Users can control cookies through browser settings or cookie consent banners.