How to take snapshots of sites

We all have taken screen shots of our computer desktops,sites etc.. you can also take screenshots of sites using mozilla add ons . That many of you might know already .But there is a drawback in using mozila to take screenshots of websites as mozila dont allow you to crop the photo , so for someone who wish to take a photo of desired size , it will be a tedious job for sure...isnt it. Well all your problem ends here . By using google crome and an extension of it , now you can take screen shots of any website or page and crop it to your desired size and shape.. You can see the screen shot of the extension along with this post... So from now on taking snaps of the website will be a click away..But this extension only works with Google chrome only
I have included the downloading link for the extension below.. feel free to use it.

download the extension from here