To resize an image, we use the flag -resize: convert test.png -resize 300x200 test_2.png To install on CentOS and Fedora, run: yum install ImageMagick Resize an Image using Convert └ Note: For older Ubuntu versions (version 14.04 and below), you need to use apt-get instead of apt. If it is not installed, we can install it on Ubuntu and Debian with: sudo apt install imagemagick Installing ImageMagick ( convert)įirst verify if ImageMagick is already installed using: convert -version It consists of many tools with number of options for image modification, conversion, etc. Thousands of websites were affected, but the vulnerabilities were quickly mitigated and patched.Ī complete list of CVEs for ImageMagic is located at is a suite of image modification software for Linux. Nicknamed "ImageTragick," these security holes potentially allowed RCE (remote code execution) by an attacker on the server. In 2016, major security vulnerabilities were discovered in the way ImageMagick processes file names. ImageMagick documentation, including extensive examples, is on their official website. montage.jpgĮxample 5: View file metadata identify *.jpgĭisplay file data for all jpg images in the current directory. The options specify a file name label, a frame of 3 pixels, a blue background color, and the output file name montage.jpg. input.jpgĮxample 4: Create a montage of image thumbnails montage -label '%f' input.jpg output*.jpg -frame 3 -background '#2B81EE' montage.jpgĬreate an image with thumbnails of input.jpg and all output images (using the wildcard *). Swirl the image 720 degrees and resize it to 120%. input.jpgĮxample 3: Add a swirl effect, resize convert input.jpg -swirl 720 -resize 120% output3.jpg The dimensions of the final image remain the same, padded with the default color white. Use the -distort SRT (scale, rotate, translate) distortion type to scale the image 50%, and rotate it 135 degrees clockwise. input.jpgĮxample 2: Scale and rotate image data convert input.jpg -distort SRT. Reduce the image size by 25%, and save it at 92% image quality, as the file output1.jpg. Example 1: Resize image, specify image quality convert myimage.jpg -resize 25% -quality 92 output1.jpg The following are sample commands you can use with ImageMagick. If you're not using Linux or BSD, you can run these commands on macOS with XQuartz, or on Microsoft Windows with VcXsrv. The commands animate, display, and import require an X server (the X Window System) to function.
Also, the script interpreter can be accessed with magick-script.
In version 7 of ImageMagick, these tools can be accessed with the magick command, for example magick compare. Useful for situations with slow data streams, or very large images whose data processing should begin before the entire image is stored. Process image data and store it to a file as it is being streamed from an input source. This command can create a single image containing thumbnails of many images. Similar to convert, but overwrites the original image.Ĭreate an image composed of smaller images. This tool can also blur, crop, despeckle, dither, and otherwise modify the content of an image.ĭisplay the image dimensions, quality, and other image metadata. Interpret and execute scripts written in MSL, the Magick Scripting Language.Ĭonvert images from one file format to another. Commandĭisplay an image sequence as an animation.Īnalyze two images, and visualize mathematical differences between them.Ĭompose one image over another with variable transparency to create a composite image. ImageMagick's features are divided into individual tools, each with a command. Today, ImageMagick is a default component of many Linux and BSD operating systems, and is freely available for Microsoft Windows, macOS, and iOS.
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