Difference between revisions of "JPG"
m |
|||
| Line 2: | Line 2: | ||
|extension = .jpg, .jpeg, .jpe | |extension = .jpg, .jpeg, .jpe | ||
|compression = Variable, generally not further compressible, distorts image greatly depending on the set value of compression | |compression = Variable, generally not further compressible, distorts image greatly depending on the set value of compression | ||
| − | |bitdepth = 24 | + | |bitdepth = ~24 |
|suitable = No}} | |suitable = No}} | ||
'''JPG''', or '''JPEG''' ('''Joint Photographic Experts Group''') is a common file format designed to store images such as photographs while keeping a small file size. It was designed to store images with a lot of color detail, such as photographs. It uses lossy compression, which generates noticeable 8x8 "blocks" in low-detail areas; it is useless and damaging as a continuous working format, especially for [[sprite]]s or [[pixel art]]. | '''JPG''', or '''JPEG''' ('''Joint Photographic Experts Group''') is a common file format designed to store images such as photographs while keeping a small file size. It was designed to store images with a lot of color detail, such as photographs. It uses lossy compression, which generates noticeable 8x8 "blocks" in low-detail areas; it is useless and damaging as a continuous working format, especially for [[sprite]]s or [[pixel art]]. | ||
| − | JPEG can produce extremely small file sizes, generally lower than [[PNG | + | JPEG can produce extremely small file sizes, generally lower than [[PNG]], even when the source image has a lot of detail. Despite being a lossy format, it does support a limited amount of lossless editing, such as 90º rotations. |
| − | JPEG has been considered a very frowned upon format, and even often replaces GIF and Indexed PNG | + | JPEG has been considered a very frowned upon format, and even often replaces GIF and Indexed PNG on images, due to it being such a previously popular image format. Even with its compression, [[GIF]] or indexed [[PNG]] images may be smaller than JPEG when few palette colors are used. |
[[Category:Image Formats]] | [[Category:Image Formats]] | ||
Revision as of 02:32, 3 October 2009
|
| JPG | |
|---|---|
| File extensions | .jpg, .jpeg, .jpe |
| Compression | Variable, generally not further compressible, distorts image greatly depending on the set value of compression |
| Max bit depth | ~24 |
| Suitable working format | No |
JPG, or JPEG (Joint Photographic Experts Group) is a common file format designed to store images such as photographs while keeping a small file size. It was designed to store images with a lot of color detail, such as photographs. It uses lossy compression, which generates noticeable 8x8 "blocks" in low-detail areas; it is useless and damaging as a continuous working format, especially for sprites or pixel art.
JPEG can produce extremely small file sizes, generally lower than PNG, even when the source image has a lot of detail. Despite being a lossy format, it does support a limited amount of lossless editing, such as 90º rotations.
JPEG has been considered a very frowned upon format, and even often replaces GIF and Indexed PNG on images, due to it being such a previously popular image format. Even with its compression, GIF or indexed PNG images may be smaller than JPEG when few palette colors are used.
