Download speed refers to the rate at which data is transferred from the internet to your device. It is usually measured in megabits per second (Mbps). A higher download speed means that files, videos, and web pages load faster, providing a smoother online experience. Factors affecting download speed include your internet service provider (ISP), the type of connection (like fiber optic or DSL), and network congestion. Additionally, the performance of your device and the distance from the Wi-Fi router can also impact how quickly you can download content.