Most of the times, the images shown are smaller than the original. You have to actually enter the website and open the image to see it in full size.
Bring back the view image button for Google image search results
View Image Button (for Google™ Search) is an extension that lets you add a button to the Google image search page to view images directly
The toolbar button serves as an ON|OFF switch to quickly add or remove the button
Please note that clicking the view image button will open the image in a new tab
Moreover, this extension tries to find and open the image in the maximum available resolution (please wait for the image to completely load and render before pressing the view image button)
To report bugs, please fill out the bug report form on the add-on's homepage