The term "jpg" refers to a popular image file format known as JPEG, which stands for Joint Photographic Experts Group. This format is widely used for digital images due to its ability to compress file sizes while maintaining reasonable quality. It is particularly favored for photographs and web images, making it a standard choice for online content. Jpg files use lossy compression, meaning some image data is discarded to reduce file size. This compression allows for faster loading times on websites and easier storage on devices. However, repeated editing and saving of a jpg can lead to a decrease in image quality over time.