- #IMAGE RESIZING SCRIPT FOR MAC HOW TO#
- #IMAGE RESIZING SCRIPT FOR MAC INSTALL#
- #IMAGE RESIZING SCRIPT FOR MAC CODE#
Thus far, we’ve been converting a file and saving it to a brand new file. I say it’s only “okay” because users have grown more accustomed to being able to select the region of their uploaded image to serve as their avatar, so assuming they want the crop to the center of the image could cause a bit of a stir.Īlso, depending on your needs, you can adjust the gravity to grab align differently, or even crop a size that doesn’t marry up exactly with the scaled dimensions. Obviously you don’t want to stretch or squash a user’s profile picture, so cropping it to a square is an okay solution: $ convert original.png -resize 100x100^ -gravity center -extent 100x100 new.png A good use case for this is user avatars. Sometimes you want to not only resize the image and fill the area, as well as keep it’s aspect ratio, but also crop it so there’s nothing overlapping. Resize to specific dimensions and keep the aspect ratio One of the two dimensions (either width or height) will be scaled exactly, while the other will be scaled proportionately and may overlap: $ convert original.png -resize 100x100^ new.png The flip side, is that you can append ^ to the dimensions to tell ImageMagick that you’d like to resize the image to fill the dimensions, potentially overlapping on one side. What it will do is resize the image to fit within those dimensions. This won’t actually resize the image to the exact dimensions specified. To keep the aspect ratio, simply omit the bang: $ convert original.png -resize 100x100 new.png Resize to specific dimensions and keep aspect ratio To resize an image to specific dimensions, without maintaining the original image’s aspect ratio, include a bang ! at the end of the dimensions: $ convert original.png -resize 100x100! new.png
#IMAGE RESIZING SCRIPT FOR MAC HOW TO#
That said, it’s still good to know how to resize this way, if nothing else, so we know what to avoid when punching in commands late at night. Images end up looking distorted, unless the original aspect ratio was already pretty close to 1:1. Resizing to specific dimensions without preserving the aspect ratio tends to not be a desired thing to do.
Resize to specific dimensions, ignoring the aspect ratio
If not, you should head over to multicolor.io and snag an image or two from there. I’m going to assume you already have an image handy (JPG, PNG, etc.) to work with.
#IMAGE RESIZING SCRIPT FOR MAC CODE#
If you’re looking for more information on installation, you can checkout the Install-*.txt files available in the ImageMagick code repository.
#IMAGE RESIZING SCRIPT FOR MAC INSTALL#
Thanks to it’s popularity though, you should be able to install it from your favorite package manager (like apt or brew). The ImageMagick library is quite popular, but doesn’t usually come installed by default. In addition to being able to leverage it’s power from many popular programming languages, you can also use it directly from the command-line thanks to the library’s supplied executables like mogrify and convert. If you’ve ever done programmatic image manipulation (especially in PHP) you have probably encountered the ImageMagick library or it’s major fork, GraphicsMagick.
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