I am discussing about Mozilla Firefox Add-ons that can able to take screenshots easily from your Firefox browser without use of any image editor software or screenshot toolkit.
How to use Abduction Firefox plugin to take snapshots easily:
Install Abduction Firefox extension in your Mozilla Firefox browser.Now restart Firefox and whenever you wish to take screenshots of any webpage, Just hit the right click from your mouse & you will see the options as shown in image provided here.
Generally you see the options by clicking right mouse button will be seen, but excepts those option, you will see an extra option because of installed plugin in Firefox browser.That option will be save Page As Image.Just click on that option and you will see option to capture screenshot of webpage.
The option will carry an pop-up window that shows you following options.
After finishing your image selection, you just need to select the Save selection button & the you will be asked to save image in your local drive of your computer.You can host your images online too.
Related : Create your own Chrome extension