July 29, 2009, 12:31 pm

I found myself spending a ton of time adding drop shadows to images. Using a simple command I was able to create drop shadows in seconds.
convert screenshot.jpg \( +clone -background black -shadow 60×5+0+5 \) +swap -background white -layers merge +repage shadow.jpg
Note: You must have Imagemagick installed for this command to work. Debian/Ubuntu users can use apt-get install imagemagick.
February 11, 2009, 9:02 am

Most digital cameras will insert metadata into images. This metadata is stored using the exchangeable image file format (EXIF) and can contain camera specifications, exposure settings, thumbnails, GPS coordinates and more. This article outlines the command line tools you can use for reading and removing EXIF metadata from JPEG images.
Continue reading ‘Read & Remove EXIF Data From the Command Line’ »
October 13, 2008, 8:38 am

ImageMagick is a powerful command line image processing package with a number of features you could install it using the following command :
sudo apt-get install imagemagick or sudo yum install imagemagick
After installation is over to convert say sample.pdf to sample.png issue the following command
convert sample.pdf sample.png
or
convert sample.pdf sample.jpg
Now if sample.pdf has multiple pages ImageMagick would convert each individual page into a separate file for example : 1st page as sample-0.png , 2nd page as sample-1.png and so on .
Source
March 3, 2008, 4:29 pm

ImageMagick is a software suite used for image manipulation and display, supporting many image formats. ImageMagick software mainly uses command line interface for image manipulation. You can use this software to do tasks such as rotate, scale, resize, flip, shear, display and many more. You can do the image manipulation job much faster using command line interface and it is easier to use.
Now, I will walk you through the steps to install ImageMagick software suite.
Continue reading ‘Manage Images with ImageMagick’ »