A plate compactor is a construction tool used to compress soil, gravel, or asphalt. It features a heavy, flat plate that vibrates to create a downward force, helping to compact the material beneath it. This process is essential for preparing surfaces for foundations, driveways, and walkways. These machines come in various sizes and types, including gas-powered and electric models. Operators typically walk behind the compactor, guiding it over the area to ensure even compaction. Proper use of a plate compactor improves stability and reduces the risk of settling or shifting in the finished surface.