![]() Of course we’ll need to create an HTML form with which users can upload photos: Īs soon as the user hits the upload button a POST request will be sent to a script which will handle the file upload process and show the uploaded image to the user for cropping. Now that you’re familiar with the two methods, we’re good to go. The new dimensions are less than or equal to the specified dimensions. For example, a call to thumbnailImage(400, 400, true) on a 1200×768px image will produce a 400×200px version. We can also pass a third argument known as bestfit If this is set true, the image will be resized in such a way that the new dimensions can be contained within the height and width specified. If either the width or height argument to thumbnailImage() is set as 0, the aspect ratio is maintained. The above code produces a 200×200px version of image. The thumbnailImage() method simply accepts the height and width of the resized image and can be used as follows: thumbnailImage(200, 200) Finally, writeImage() saves the result back to disk for us. ![]() In this case the code will produce a cropped image of size 400×400px starting at 30px from the top and 10px in from the left of the original image. Then we call cropImage() with appropriate arguments. We create an Imagick object first, passing to its constructor the filename of our image. The first two arguments indicate the height and width of the cropped region, and the last two indicate the X and Y coordinates of the top-left corner of the cropped area. The cropImage() method accepts four arguments. Since we’re going to create an image cropper, we’ll mostly be using the two methods: cropImage() and thumbnailimage(). It offers a simple object-oriented interface to use the API you just need to create an instance of the Imagick class and then call the appropriate methods to start manipulating the images. ImageMagick provides a lot of API methods through which you can manipulate an image. Let us know if you need help.The ImageMagick extension performs image processing using the ImageMagick library. You can do this in your shell/perl script. If for some reason you still need to know the longer side, I usually use the identity function to retrieve image information first. If, for example, you wanted each image to have a maximal width of 800, then you can just make the height portion of the scale option an unreasonable high number for you images.Īs you can see, by setting the height to a number larger than a feasible proportional height, you get all images sized to 200 pixels in width regardless of orientation. If this is what you are looking for, then you don't need to know which size is longer. Note that if you use an option such as resize 800x800, it will resize images as follows: Provide the desired sizes and I'll paste an example in here. ![]() Give me an example of two different images in a folder, including width and height. maxdepth 0 -iname "*.jpg" -print0 | xargs -0 mogrify -path /tmp/thumbs -thumbnail 120x120 -quality 75 -format png Upgrade if you need to use a different directory as well as a different image format for your output.įind. *Before IM v6.3.4-3 the "-format" and "-path" settings were mutually exclusive. The above statement will leave the original JPG files alone, and write PNGs beside them. maxdepth 0 -iname "*.jpg" -print0 | xargs -0 mogrify -format png maxdepth 0 -iname "*.jpg" -print0 | xargs -0 mogrify -resize 800圆00 -quality 75įind. NOTE! Mogrify is a dangerous command because it operates on the original files! Test your commands on COPIES of your files.įind. maxdepth 0 -iname "*.jpg" -print0 | xargs -0 -I ![]() -l is deprecated in preference for -L 1.įind.Use -maxdepth 0 to avoid descending into subdirectories.Use -print0 (and -0) to avoid problems with filenames containing Carriage Returns. ![]()
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