GooglePreview is a free addon which lets you insert image thumbnails of the websites page whose search results are being shown in the google search. [ as shown in the image below ]
Adding thumbnails images to the google search results seems very useful to me, as it give me a glimpse of the website which I am going to visit, previously we have posted about another google chrome addon which lets you preview the google search results without clicking.
Install GooglePreview Addon To Add Thumbnails To Google Search Results In Google Chrome
Filed in: useful google chrome addons