When browsing websites on your Windows Phone, you might want to Save the picture to the library or Share an Image on the webpage to your friends via twitter, Facebook, email or SMS.
How to Save or Share Picture from a Webpage in Windows Phone?
To Save or Share Images from a Webpage in Windows Phone, just tap and hold on the Image .
This will open a context menu to display 2 options
1. Share Picture
2. Save Picture
Tap on the necessary menu options to Share or Save Picture