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18.4 Saving Images
No image function is as important as File > Save. It is better to save too often than too
rarely. Use File > Save as to save the image with a new filename. It is a good idea to
save image stages under different names or make backups in another directory so you
can easily restore a previous state.
When saving for the first time or using Save as, a dialog opens in which to specify the
filename and type. Enter the filename in the field at the top. For Save in folder, select
the directory in which to save the file from a list of commonly used directories. To use
a different directory or create a new one, open Browse for other folders. It is recom-
mended to leave Select File Type set to By Extension. With that setting, The GIMP de-
termines the file type based on the extension appended to the filename. The following
file types are frequently useful:
XCF
This is the native format of the application. It saves all layer and path information
along with the image itself. Even if you need an image in another format, it is
usually a good idea to save a copy as XCF to simplify future modifications. Infor-
mation about layers is available in
Section 18.5.6, “Layers” (page 240).
PAT
This is the format used for The GIMP patterns. Saving an image in this format en-
ables using the image as a fill pattern in The GIMP.
JPG
JPG or JPEG is a common format for photographs and Web page graphics without
transparency. Its compression method enables reduction of file sizes, but information
is lost when compressing. It may be a good idea to use the preview option when
adjusting the compression level. Levels of 85% to 75% often result in an acceptable
image quality with reasonable compression. Saving a backup in a lossless format,
like XCF, is also recommended. If editing an image, save only the finished image
as JPG. Repeatedly loading a JPG then saving can quickly result in poor image
quality.
GIF
Although very popular in the past for graphics with transparency, GIF is less often
used now because of license issues. GIF is also used for animated images. The
format can only save indexed images. See
Section 18.5.7, “Image Modes” (page 240)
232 KDE User Guide