Thumbalizr allows you to create thumbnails of any websites you want. All you need to do is enter the URL of the website and hit the thumb it button. Thumbalizr will then generate the thumbnail instantly with size options (width) of 150, 320, 640, 800 and 1024. You can even customize the width yourself by typing into the textfield provided.
This thumbnail generator is very convenient tool, especially for those who want to create thumbnails on the fly for blogging or presentation.
Add Thumbalizr to Firefox browser
If you expect yourself to perform thumbnail generating very often, drag “Thumbalize this” bookmarklet to your Firefox browser, generate thumbnail of any website with one click. Click here for more information.