Difference between revisions of "JPEG"

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(See also: Exif.)
(JPEG metadata.)
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'''JPEG''' files consist of a well defined header, some [[metadata]], and a well defined footer.
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The '''Joint Photographic Experts Group''' ('''JPEG''') format is a commonly-used lossy [[image format]].
  
The header is usually, in hex <tt>FFd8</tt>.
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== Format ==
  
== See also ==
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JPEG files consist of a well defined header, some [[metadata]], and a well defined footer. The header is usually <tt>FFd8</tt> (hex).
  
* [[Exif]]
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Common file extensions are .jpg, .jpeg, .JPG, .JPE, and .jfif.
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== Metadata ==
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JPEG files can contain lots of [[metadata]] in [[Exif]] format:
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The [[jhead]] command line tool can be used to extract that metadata.
  
 
== Externals Links ==
 
== Externals Links ==
  
* [http://en.wikipedia.org/wiki/JPEG Wikipedia article on JPEG]
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* [http://en.wikipedia.org/wiki/JPEG Wikipedia: JPEG]

Revision as of 06:00, 30 March 2006

The Joint Photographic Experts Group (JPEG) format is a commonly-used lossy image format.

Format

JPEG files consist of a well defined header, some metadata, and a well defined footer. The header is usually FFd8 (hex).

Common file extensions are .jpg, .jpeg, .JPG, .JPE, and .jfif.

Metadata

JPEG files can contain lots of metadata in Exif format:


The jhead command line tool can be used to extract that metadata.

Externals Links