![]() ![]() If set to true, the resized images will maintain aspect ratio by overflowing their dimensions as necessary, rather than treating them as maximum-size constraints. verĭetermines whether images should cover the area specified by the width and height options. However, you must compile ImageMagick with the WebP option. Unlike GraphicsMagick, ImageMagick supports the WebP format. imageMagick('img.png').autoOrient().write/path, callback) ImageMagick Options. The value that you want the image to be scaled to. Then use imageMagick the same way youd normally use gm. Can be used for layered formats such as PNG. See gm background documentation options.flattenĬombines image layers into one. Possible values: none to keep transparency, beige to set beige background, #888 for gray.ĭefine background color (default is white), for example when converting SVG images to PNGs. Set to true when using ImageMagick instead of GraphicsMagick. JPEG) do not support more than one image and are saved to separate files. By default, all images of an image sequence are stored in the same file. For details look for parameter -interlace with the type value set to join images into a single multi-image file. Set to true to create interlaced images (scanline interlacing) from PNG, GIF or JPEG files For details look for parameter +profile "*" in the gm profile documentation. ![]() Therefore this is probably wanted inĬases where thumbnails are generated for web preview purposes. Print this may decrease image size drastically. untouched camera data or images optimized for Set to true to enforce removal of all embedded profile data like icc, exif, iptc, xmpĪnd so on. In other words, regardless of the resulting size of the actual image cropped, the canvas and offset of the image. This flag will tell crop to adjust the Virtual Canvas information of the returned image so that it is relative to the area cropped. Possible values: for 4:2:2, for 4:1:1ĭefine chroma subsampling options.noProfile From ImageMagick version 6.2.4-5, you can add a new special flag to the '-crop' argument. Set to true to apply a slight unsharp mask after resizing. Catrom is very good for reduction, while hermite is good for enlargement). Set the filter to use when resizing (e.g. Possible values: Point, Box, Triangle, Hermite, Hanning, Hamming, Blackman, Gaussian, Quadratic, Cubic, Catrom, Mitchell, Lanczos, Bessel, Sinc Override the output format of the processed file. Adding content to image, for example text, shape, other image (watermark), etc. ![]() Ranges from 0 (really bad) to 1 (almost lossless). Resize / crop images Apply filters to image, for example color, contrast, brightness, etc. options.qualityĭetermines the output quality of the resized image. Doesn't have any effect, if options.crop is false. When cropping images this sets the image gravity. Possible values: NorthWest, North, NorthEast, West, Center, East, SouthWest, South, SouthEast options.cropĭetermines whether images will be cropped after resizing to exactly match options.width and options.height. If set to false (default), image will be copied instead of resized if it would be upscaled by resizing. The gm executable returns the exit code 0 to indicate success, or 1 to indicate failure. All of the utilities are provided as sub-commands of a single gm executable. options.upscaleĭetermines whether images will be upscaled. So far I haven't found a way to do it, the closest I've come up with is to run it in -trim info:- mode, capture the output and recalculate the crop using a manual crop but I'd really prefer a one step process. GraphicsMagicks gm provides a suite of utilities for creating, comparing, converting, editing, and displaying images. 4 Answers Sorted by: 61 Assuming that you always know the size of your image you can do it like this: convert original.jpg -crop 640圆20+0+0 cropped.jpg With the -crop operator you specify the size of the cut out image and the offset from the upper left corner of the old image. options.heightĭefault value: 0 (only if width is defined)Ī number value that is passed as pixel or percentage value to imagemagick. dest ( 'dist' ) ) ) API imageResize(options) options.widthĭefault value: 0 (only if height is defined)Ī number value that is passed as pixel or percentage value to imagemagick. (indeed when IM opens the file on Q16 environment it only sees it as 8-bits)īut then one can change the number of colors:Ĭonvert rose24.bmp -colors 16 rose16colors.Const gulp = require ( 'gulp' ) const imageResize = require ( 'gulp-image-resize' ) gulp. Then opened it in another program and converted it to 24-bits bmp (rose24.bmp) I took the rose: image and converted to 16-bit png. Perhaps I do not understand your problem. ![]()
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