Portable air compressors are compact devices that compress air for various uses, such as inflating tires, powering pneumatic tools, or providing air for spray painting. They are designed to be lightweight and easy to transport, making them ideal for both home and on-the-go applications. Many models come with built-in storage for hoses and accessories, enhancing convenience. These compressors typically run on electricity or batteries, allowing for versatility in different settings. Users can find models with varying pressure outputs and tank sizes, catering to different needs. Popular brands include DeWalt, Makita, and Bostitch, each offering a range of features to suit various tasks.