Bulk image resizing and format conversion

All of us use digital cameras and download photos from the cameras, as well as the Internet. When we need to deal with a large number of image files, we can use scripts to easily perform actions on the files in bulk. A regular task we come across with photos is resizing the file. Also, format conversion from one image format to another comes to use (for example, JPEG to PNG conversion). When we download pictures from a camera, the large resolution pictures take a large size. But we may need pictures of lower sizes that are convenient to store and e-mail over the Internet. Hence, we resize it to lower resolutions. This recipe will discuss how to use scripts for image management.

Getting ready

We will use the command convert from the Imagemagick suite, which contains excellent tools for manipulating images that can work across several image formats and different constructs with rich options. Most of the GNU/Linux distributions don't come with Imagemagick...