simple image transformations (cropping, flipping), and creating, deconstructing. For me, this means I put it first in the command so I don’t forget the order. Quick installation of gifsicle Architecture: amd64 Version: 1.92-2. It’s important to note that according to the documentation, “Cropping takes place before any rotation, flipping, resizing, or positioning.” That means if you want to do anything else (like resize, flip, etc.), realize that cropping takes place first. Cropping an image now automatically recalculates the output logical screen. Leaving us with the following: gifsicle -crop 105,0+270x270 resize-gif.gif > resize-gif-cropped.gif Explore Tumblr Posts and Blogs tagged as Gifsicle with no restrictions. We can apply that to our command line input above, adding a 105px offset in the x1 parameter of the crop option. You can find that with this simple formula: ((total longest side) - (total desired length)) / 2 To keep that crop in the center, then, I’ll need 105px offset. The greater than sign tells it to take the original file (i.e., “resize-gif.gif”) and save the cropped version as “resize-gif-cropped.gif” in the same directory.Īlmost right…but it’s offset to the top right-hand corner, so we’re not getting the middle of the gif cropped to a 1:1 square. gifsicle -crop 0,0+270x270 resize-gif.gif > resize-gif-cropped.gif Next, we provide the cropped dimension: 270x270 as our width and height respectively. For now, let’s just work on getting it to crop the image. Here are a few easy methods for resizing a GIF with gifsicle: Scaling of an image - 50 gifsicle -scale 0.5 -i animation.gif > animation-smaller.
0,0 will start the crop from the top right-hand corner (i.e., x1 = 0 and y1 = 0). The first two tell it where to start the crop from. The crop option takes four parameters: x1, y1 + width x height. Modify all frames of a GIF using specific transformation options. Numbers 1, 3, and 4 are self-explanatorry, so let’s focus on #2. gifsicle -b path/to/input.gif -delete 0-9 20.
GIFSICLE CROP INSTALL
On a Mac, you can install gifsicle using Home-brew with the following command: brew install gifsicle 2. Here’s a simple step-by-step guide to using it. I recently needed to crop a gif to a square and found this command-line tool for working with gifs called gifsicle.
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