In the Drupal web development process deleting unnecessary bytes from image files is very useful. Smush.it uses image optimization methods that are specific for each format, which means that images are optimized without changing their face and quality.
There are both flash-multiupload or URL upload available in its interface.
After data are processed by Smush.it, the report will appear on the screen
All optimized images can later be saved in a ZIP file.
As the report shows, optimization of our image has been performed, which is a tremendous result as long as all images had prior been optimized by another program.