IMAGEMAGICK RESIZE DOWNLOAD

Otherwise, look for it in your favorite package manager, or download it directly from the ImageMagick website.

IMAGEMAGICK RESIZE INSTALL

If you use Homebrew on a Mac, you can install it like this: brew install imagemagick

IMAGEMAGICK RESIZE WINDOWS

It’s also available on desktop systems (Mac, Windows and Linux).

It is widely supported by content management systems (CMS) such as WordPress and Drupal, integrated with task runners such as Grunt, and used on its own to automate image editing - including resizing. ImageMagick has been around for almost 25 years and is a full-fledged command-line image editor. A bunch of tools out there do this, including GD and GraphicsMagick, but ImageMagick strikes a good balance between power and availability in hosting environments. This is where automated image resizing comes in handy. But what about a large website with a lot of images? An online store, for example, might have hundreds or thousands of image assets, and having to create different sizes of each of these is an enormous task. Responsive images to the rescue! Right? Well, yes, but first we have to generate our responsive image assets, and we have to make sure those assets look good and have a small enough footprint to improve the website’s performance.įor a very small website, saving a few different sizes of each image directly in our image editor is trivial - Photoshop even provides a handy “Save for Web” option that keeps file sizes low. (Image: HTTP Archive) ( View large version) The average web page is 2,099 KB, 1,310 KB of which comes from images. Improving web performance and giving a better experience to our users is our job as developers and designers. Even on a fast connection, a 2 MB website can wreak havoc on your users’ data plans and cost them real money. At the same time, millions of people are accessing the Internet on 3G-or-worse connections that make a 2 MB website a horror show to use. Remember, when uploading files you need to set the form’s enctype attribute to “multipart/form-data”.Īn upload script handles the image upload and resizing the image if required.The average web page is about 2 MB in size, and about two thirds of that weight is from images. 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.

IMAGEMAGICK RESIZE CODE

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. The ImageMagick extension performs image processing using the ImageMagick library.

Imagemagick resize