An HDMI splitter is a device that allows you to connect one HDMI source, like a Blu-ray player or gaming console, to multiple displays, such as TVs or monitors. This means you can share the same video and audio signal across different screens without needing multiple sources. These splitters come in various configurations, typically supporting two or more outputs. They are useful for presentations, home theaters, or gaming setups where you want to display the same content on different screens simultaneously. Most HDMI splitters support high-definition resolutions, ensuring quality performance across all connected devices.