vipsthumbnail(1) [debian man page]
VIPSTHUMBNAIL(1) General Commands Manual VIPSTHUMBNAIL(1) NAME
vipsthumbnail - make thumbnails of image files SYNOPSIS
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 writ- ten to a new file named tn_imagefile.jpg. This program is typically faster and uses less memory than other image thumbnail programs. For example: $ vipsthumbnail fred.png jim.tif will read image files fred.png and jim.tif and write thumbnails to the files tn_fred.jpg and tn_jim.jpg. $ vipsthumbnail --size=64 -o thumbnails/%s.png fred.jpg will read image file fred.jpg and write a 64 x 64 pixel thumbnail to the file thumbnails/fred.png. On Unix machines, vips will create temporary files in "/tmp" by default. Use the environment variable TMPDIR to change this location. On Windows, vips uses GetTempPath() to pick a location, see the MS documentation. Use the --vips-disc-threshold command-line switch, or the IM_DISC_THRESHOLD environment variable, to make vipsthumbnail use memory rather than temporary files. 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 replac- ing %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 avail- able. 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 VIPSTHUMBNAIL(1)
Check Out this Related Man Page
sips(1) BSD General Commands Manual sips(1) NAME
sips -- scriptable image processing system. SYNOPSIS
sips [image-query-functions] imagefile ... sips [profile-query-functions] profile ... sips [image-modification-functions] imagefile ... [--out result-file-or-dir] sips [profile-modification-functions] profile ... [--out result-file-or-dir] DESCRIPTION
This tool is used to query or modify raster image files and ColorSync ICC profiles. Its functionality can also be used through the "Image Events" AppleScript suite. FUNCTIONS
Profile query functions: -g key --getProperty key Output the property value for key to stdout. -X tag tagFile --extractTag tag tagFile Write a profile tag element to tagFile. -v --verify Verify any profile problems and log output to stdout. Image query functions: -g key --getProperty key Output the property value for key to stdout. -x profile --extractProfile profile Get the embedded profile from image and write it to profile. Profile modification functions: -s key value --setProperty key value Set a property value for key to value. -d key --deleteProperty key Remove a property value for key. --deleteTag tag Remove the tag element from a profile. --copyTag srcTag dstTag Copy the srcTag element of a profile to dstTag. --loadTag tag tagFile Set the tag element of a profile to the contents of tagFile. --repair Repair any profile problems and log output to stdout. Image modification functions: -s key value --setProperty key value Set a property value for key to value. -d key --deleteProperty key Remove a property value for key. -e profile --embedProfile profile Embed profile in image. -E profile --embedProfileIfNone profile Embed profile in image only if image doen't have a profile. -m profile --matchTo profile Color match image to profile. -M profile intent --matchToWithIntent profile intent Color match image to profile with rendering intent perceptual | relative | saturation | absolute. --deleteColorManagementProperties Delete color management properties in TIFF, PNG, and EXIF dictionaries. -r degreesCW --rotate degreesCW -f horizontal|vertical --flip horizontal|vertical -c pixelsH pixelsW --cropToHeightWidth pixelsH pixelsW Crop image to fit specified size. -p pixelsH pixelsW --padToHeightWidth pixelsH pixelsW Pad image with pixels to fit specified size. --padColor hexcolor Use this color when padding. White=FFFFFF, Red=FF0000, Default=Black=000000 -z pixelsH pixelsW --resampleHeightWidth pixelsH pixelsW Resample image at specified size. Image apsect ratio may be altered. --resampleWidth pixelsW Resample image to specified width. --resampleHeight pixelsH Resample image to specified height. -Z pixelsWH --resampleHeightWidthMax pixelsWH Resample image so height and width aren't greater than specified size. -i --addIcon Add a Finder icon to image file. OPTIONS
The commands --getProperty, --setProperty, and --deleteProperty can use one of the following keys as a parameter. Special property keys: all binary data allxml binary data Image property keys: dpiHeight float dpiWidth float pixelHeight integer (read-only) pixelWidth integer (read-only) typeIdentifier string (read-only) format string jpeg | tiff | png | gif | jp2 | pict | bmp | qtif | psd | sgi | tga formatOptions string default | [low|normal|high|best|<percent>] | [lzw|packbits] space string (read-only) samplesPerPixel integer (read-only) bitsPerSample integer (read-only) creation string (read-only) make string model string software string (read-only) description string copyright string artist string profile binary data hasAlpha boolean (read-only) Profile property keys: description utf8 string size integer (read-only) cmm string version string class string (read-only) space string (read-only) pcs string (read-only) creation string platform string quality string normal | draft | best deviceManufacturer string deviceModel integer deviceAttributes0 integer deviceAttributes1 integer renderingIntent string perceptual | relative | saturation | absolute creator string copyright string md5 string (read-only) Darwin May 31, 2019 Darwin