Image Downloader for Instagram™ is a lite add-on that let you easily download desired images from instagram website.
Simply add the add-on to your browser and open instagram page. Once the add-on is active (toolbar icon is dark grey) you will see a download icon next to any image (on top left corner side). Please click on the icon to download the image to your machine.
Please note that download location is the default location for download in your browser. This add-on will capture and download the highest resolution image to your machine.
In order to report bugs, please fill the bug report form in the add-on's homepage (http://mybrowseraddon.com/image-downloader-for-instagram.html).