There are lots of Free websites that let you take screenshot of a particular Webpage/Website. But all of these take some time while queueing up the job. Also the features, thumbnail size options are limited.
Here is the Solution – FireShot — Firefox plugin which is very flexible, let’s you choose size of the target image and automatically uploads to a free Image hosting instantly.
When Installed, It sits in the right corner of Statusbar and gives you alot of options to chose from for capture. You can capture and Edit, Upload, save, print, copy to clipboard, Email for the Visible area or the Entire Page.
Also, you have option to include or exlude flash components. When you are including them, you can mention time offset too. Helpful for animated flash.
If you are saving image, you can choose between Jpeg and PNG file formats and corresponding image quality between 1 and 100, bigger the no., higher the size.