![]() The software mainly consists of a number of command-line interface utilities for manipulating images. The vulnerability did not affect ImageMagick distributions that included a properly configured security policy. The security flaw was due to ImageMagick calling backend tools without first properly checking to ensure path and file names are free of improper shell commands. Security researchers at Cloudflare observed use of the vulnerability in active hacking attempts. In May 2016, it was reported that ImageMagick had a vulnerability through which an attacker can execute arbitrary code on servers that use the application to edit user-uploaded images. It was freely released in 1990 when DuPont agreed to transfer copyright to ImageMagick Studio LLC, still currently the project maintainer organization. ImageMagick was created in 1987 by John Cristy when working at DuPont, to convert 24-bit images (16 million colors) to 8-bit images (256 colors), so they could be displayed on most screens at the time. It is widely used in open-source applications. ImageMagick was created by John Cristy in 1987, it can read and write over 200 image file formats. ImageMagick, invoked from the command line as magick, is a free and open-source cross-platform software suite for displaying, creating, converting, modifying, and editing raster images. Linking from code with a different licence ![]() They offer a tool which is able to optimize your images for 5-10% smaller file size without to lower the grade of quality."Magick (software)" redirects here. If you’re looking to down-size another 5-10%, you should try a free service from Yahoo. The results after the photo compression is very similar and the file size is between 85KB (fireworks) and 95KB (Photoshop). Original image and compressed copiesĬheck the images below and note that the quality for the compressed images (file 2-5) is very similar. Using the following command the file is down-sized using an 80% quality (file size after conversion is 89KB): convert original_100.jpg -quality 80 imagemagick_80.jpg Sure this method works different from the other methods but the good point is that you can use this code in your PHP scripts or just from the command line of your web server. Our last option is ImageMagick a Linux command line tool. If you use GIMP to down-size your photos from your digital camera you should check the option “Strip EXIF”, removing the photo’s meta data will make the file smaller for another ~10KB. The editor has also a “Safe for web” function and we used and 86% quality for our export file which becomes a size of 87KB. If you need a free editor you should try Gimp, an Image editor which many functions like the other commercial products mentioned before. GIMP (free Image Editor)īoth Adobe products are not free and are only available for Windows or Mac. We did an export with 80% quality and the compressed version has a file-size of 85KB. ![]() Adobe Fireworksįireworks is my favorite web image editor because of the unique feature to have bitmap and vector elements in a single file. The result is a smaller file with a file-size of 95KB. ![]() In our example we used the preset “High Quality” which is equal to 60% quality. If you use the “Save for web…” function it’s possible to create a web optimized version from your image that is small enough and has a quality which is good enough for your website. For this article we compare 4 ways to compress our example photo (original file-size 393KB): Adobe Photoshop Your favorite image editor should have some function to down-size your images. If you build your website, you should compress your photos, banners and most other web elements. There is also some other reason why you should care about file sizes: Bandwidth, if your website has many visitors, every saved KB of bandwidth you save will lower web hosting expenses. Google will not remove “slower” websites, but together with all the other ranking factors is your website’s speed something you should think about. Update: Since 2011 is the page speed an criteria how Google ranks websites. In this article we show several ways to compress photos and JPEG images for your website. One of the “slow” parts of your website are the images. Even if internet connections becoming faster and faster, it’s still important to keep your website as fast as possible. ![]()
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