What is JPG? What Opens a JPG? File Format List
File Extensions: JPGFile Format
JPEG bitmap
JPG is a file extension for a lossy
graphics file. The
extension is used interchangeably with JPG. JPEG stands for Joint Photographic
Experts Group who created the standard. JPG files have 2 sub-formats, JPG/Exif (often used in
digital cameras and photographic equipment), and JPG/JFIF (often used on the World Wide Web).
The JPEG standard specifies the codec, which defines how an image is compressed into a stream of
bytes and decompressed back into an image, but not the file format used to contain that stream. The
Exif and JFIF standards define the commonly used formats for interchange of JPEG-compressed
A JPG file consists of a sequence of segments, each beginning with a marker, each of which
begins with a 0xFF byte followed by a byte indicating what kind of marker it is. Some markers
consist of
others are followed by two bytes indicating the length of
marker-specific payload data that follows.
JPG files can be opened by most image editing software, from Microsoft Paint to
Adobe Photoshop.
image/jpeg
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