Fast.com is a simple online tool created by Netflix that allows users to test their internet speed quickly. By visiting the website, users can see their download speed in real-time without needing to install any software. The interface is straightforward, displaying results in large, easy-to-read numbers. In addition to download speed, Fast.com also provides information about upload speed and latency. Users can click on the "Show More Info" button to access these additional metrics. This tool is useful for anyone wanting to check their internet performance, whether for streaming, gaming, or general browsing.