table of contents
VIPSTHUMBNAIL(1) | General Commands Manual | VIPSTHUMBNAIL(1) |
NAME¶
vipsthumbnail - make thumbnails of image filesSYNOPSIS¶
vipsthumbnail [flags] imagefile1 imagefile2 ...DESCRIPTION¶
vipsthumbnail(1) processes each imagefile in turn, shrinking each image to fit within a 128 by 128 pixel square. The shrunk image is written to a new file named tn_imagefile.jpg. This program is typically faster and uses less memory than other image thumbnail programs.$ vipsthumbnail fred.png jim.tif
$ vipsthumbnail --size=64 -o thumbnails/%s.png fred.jpg
OPTIONS¶
- -s N, --size=N
- Set the output thumbnail size to N x N
pixels. The image is shrunk so that it just fits within this area, Images
which are smaller than this are expanded.
- -o FORMAT, --output=FORMAT
- Set the output format string. The input filename has any
file type suffix removed, then that value is substitued into FORMAT
replacing %s. The default value is tn_%s.jpg meaning JPEG
output, with tn_ prepended. You can add format options too, for
example tn_%s.jpg:20 will write JPEG images with Q set to 20.
- -p I, --interpolator=I
- Resample with interpolator I. Use vips --list
classes to see a list of valid interpolators. The default is
bilinear.
- -n, --nosharpen
- By default, vipsthumbnail(1) will sharpen thumbnails
slightly to make them look more pleasing. This option disables this
sharpening.
- -e PROFILE, --eprofile=PROFILE
- Export thumbnails with this ICC profile. Images are only
colour-transformed if there is both an output and an input profile
available. The input profile can either be embedded in the input image or
supplied with the --iprofile option.
- -i PROFILE, --iprofile=PROFILE
- Import images with this ICC profile, if no profile is
embdedded in the image. Images are only colour-transformed if there is
both an output and an input profile available. The output profile should
be supplied with the --oprofile option.
- -l, --nodelete
- Don't delete the profile from the output image. Since all
output images will generally have the same profile,
vipsthumbnail(1) will usually delete it. This option leaves the
profile inside the image.
- -v, --verbose
- vipsthumbnail(1) normally runs silently, except for
warning and error messages. This option makes it print a list of the
operations it performs on each image.
RETURN VALUE¶
returns 0 on success and non-zero on error.SEE ALSO¶
header(1)13 May 2010 |