![]() Here is the outcome image (convert-crop-img4. But note that the +repage is needed to remove the virtual canvas of 400x299+0+16, because PNG output supports virtual canvas. So you can do: convert barn.jpg -gravity center -crop 3: 2 +repage barncrop3to2.png. $ convert -crop 50%x50%+$OFFSETX+$OFFSETY convert-crop-img1.jpg convert-crop-img4.jpg Recent versions of Imagemagick (since 6.9.9-34) have an aspect crop. $ OFFSETY=$(identify -format '%' convert-crop-img1.jpg) $ OFFSETX=$(identify -format '%' convert-crop-img1.jpg) convert input.jpg -resize 25x25 -gravity center -crop 25x25+0+0 +repage result.jpg but need IM v6.3.8-3 or higher. For cropping the center, -extent with -gravity Center will work. ![]() Here is the outcome image (convert-crop-img3.jpg):Ĭrop image using both target width,height and offset in percentageĬrop the image to target size 50%x50% with crop starting point at x=25%,y=25% Usage questions are like 'How do I use ImageMagick to create drop shadows'. 72 You would use the area-fill ( ) geometry modifier on the -resize operation to unify the down-scale. $ convert -crop 50%x50%+100+50 convert-crop-img1.jpg convert-crop-img3.jpg Here is the outcome image (convert-crop-img2.jpg):Ĭrop image using target width,height in percentageĬrop the image to target size 50%x50% with crop starting point at x=100,y=50 $ convert -crop 240x160+100+50 convert-crop-img1.jpg convert-crop-img2.jpg Here are two results with slightly different resize arguments. ![]() convert image -crop 1200x1200+0+0 +repage -resize 600圆00 -background white -gravity center -extent 600圆00 result. convert input.jpg -resize 100x100 \ -gravity Center \ -extent 100x100 \ output. Here is your command in command line Imagemagick with proper resetting of the virtual canvas after the crop. Crop image using target width,height and offset in pixelĬrop the image to target size 240×160 with crop starting point at x=100,y=50 2 Answers Sorted by: 72 You would use the area-fill ( ) geometry modifier on the -resize operation to unify the down-scale. This tutorial is performed on Mac (OS X Yosemite) with Imagemagick version 6.9.2-7. We’ll be using the following image (convert-crop-img1.jpg width,height=480×320) for the purpose of this tutorial. ![]() This can be useful in automation and also doing bulk operation on images. Imagemagick convert is pretty handy tool to manipulate images and can be used to crop an image. Resize and crop images to fill their grid cells before tiling: montage image1.png image2.jpg imageN.png -geometry +0+0 -resize 640x480 -gravity center. ![]()
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