Be sure to check the output of Irfanview carefully, as it sometimes breaks images when used with Wine.
Side note: mogrify can be used to execute most (if not all) convert operations in batch, while overwriting original files.Īs Trevor noted in the comments, you can use the -path option to output converted files to a new directory without overwriting the original files: mogrify -trim -path trimmed_folder/ *.png To keep the originals use the -path option or do a backup copy of all images in the directory before proceeding with the mogrify command. Please note that unlike convert and batch operation with find and convert, mogrify overwrites all files. While find allows for much greater control where output files will be placed, it is also possible to do the same with ImageMagick's mogrify: mogrify -trim *.pngĪnd if you want to crop colors near the corner colors (adjust the percentage based on the results you are observing): mogrify -trim -fuzz 10% *.png ImageMagick Batch Trim (find)Ībove command for ImageMagick Trim can also be used to batch process images combined with the find command: find. Use the option +repage to remove a canvas (if applicable). Note: The -fuzz option must precede -trim because options' order matters for convert command to work as expected. fuzz 10%) also removes colors near the corner colors. The additional option -fuzz (which takes a percentage as an argument, e.g. Usage: convert input.png -trim output.png The -chop 0x25 states that I want to cut 25 pixels from the height.The command line option trim used together with convert, or mogrify lets you trim borders of the same color as the corners of an image. The -gravity south option states that I want the crop to start at the bottom of my image. If you prefer to covert all images of a folder, change directory to the folder and useĬonvert myPhoto.jpg -gravity Center -crop 200x200+0+0 +repage newPhoto.jpg To avoid overrides the original image files, create a new folder, copy the images and backup in that folder.įor resize a single image to a height of 600px with the same aspect ratio, you could run this command:Ĭonvert input.png -geometry 圆00 output.png
#Imagemagick crop center install
configure make make test make -n install
#Imagemagick crop center download
Go to: and download the required/missing delegate library.“convert: no decode delegate for this image format “ When trying to convert jpeg images, it came up with this error message: Set the DYLD LIBRARYPATH environment variable:Įxport DYLDLIBRARY PATH=”$MAGICK_HOME/lib/ If the bin subdirectory of the extracted package is not already in your executable search path, add it to your PATH environment variable. Set the MAGICK_HOME environment variable to the path where you extracted the ImageMagick files.Įxport MAGICK_HOME=”$HOME/ImageMagick-6.9.1" The port command downloads ImageMagick and many of its delegate libraries.
Part of the problem is that MacPorts binaries are installed in /opt/local/bin, so you will need to manually adapt your shell’s environment to work with MacPorts: I’ll post it here as a future reference for myself and perhaps it will help others as well.Īfter the installation, if you got an error: Mogrify is a command of the ImageMagick package and allows us to perform many operations on multiple images. I have found ImageMagick very useful to scales and crop the images. 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. One of the tasks I perform today is batch cropping a lot of pictures.
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