A JPEG file is an image saved in a compressed graphic format standardized by the Joint Photographic Experts Group (JPEG). It supports up to 24-bit color and is compressed using lossy compression, which may noticeably reduce the image quality if high amounts of compression are used. JPEG files are commonly used for storing digital photos and web graphics.
JPEG file open in Microsoft Windows Photos
A JPEG file also contains metadata that describes the contents of its file, such as the color space, color profile, and image dimension information. Image files saved in the JPEG format are more commonly appended with the .JPG extension than the JPEG extension.
If you come across a JPEG file on your computer you can open it with any program that supports images. There are a large amount of free and commercial image editors available for desktop and mobile platforms. You can also view it in a web browser by dragging and dropping it in the browser window.