JPEG is a popular file format for digital images due to its ability to compress the image data without significantly compromising the visual quality. It is widely used in digital photography and on the internet, as it strikes a good balance between image quality and file size. JPEG files can be easily shared and viewed on various devices and platforms. However, it is a lossy compression format, meaning that some data is lost during compression, which can result in a slight reduction in image quality compared to uncompressed formats.