How to compress image files?

Web developers and designers usually have to optimize a number of images. So individually optimizing the images one by one is a pathetic process as the task is time taking and mundane. Why only web developers, even casual users can optimize multiple images at a time before uploading it on the web fast. It would be better if there was a way to optimize them simultaneously. Here is a convenient way how to compress image files inside a folder using command line.  (more…)