ImgFullRes от Salomax

ImgFullRes is a tiny add-on for Firefox, which can extract images from websites.

You will find a small icon the browser's URL bar on supported sites. Click it, and the image(s) will be opened in the highest available resolution in a new tab.
Really useful on websites, which block right-clicking or only show a scaled-down version of the image.

Supported Websites:
- 1x.com
- 500px.com
- behance.net
- everydaycarry.com
- flickr.com
- fotocommunity.de
- fstoppers.com
- instagram.com
- nzz.ch
- tagesschau.de
- zeit.de