FireShot is a Firefox extension that creates screenshots of web pages.

Unlike other extensions, this plugin provides a set of editing and annotation tools, which let users quickly modify captures and insert text and graphical annotations. Such functionality will be especially useful for web designers, testers and content reviewers. It's possible to choose whether entire web page or only visible part of this page should be captured. Screenshots can be saved to disk (PNG, JPEG, BMP), copied to clipboard, e-mailed and sent to external editor for further processing.

Adds the ability to take a screenshot of web page (entire of visible part), edit it, add annotations and save (PNG, JPEG, BMP), copy to clipboard, send to external editor or e-mail it.

Some of these newest features include:

• Screenshot can be uploaded to server for resizing, commenting and blogging.
• Added Undo/Redo feature
• Added "Resume editing"� option
• Line width can be specified
• Improved page extents detection mechanism (now supports GMail, E-Bay and other frame-based sites)
• Improved memory management routines and error handling messages.
• Added MS Outlook support
• Working folder can be set up and periodically erased.

For more info visit Firefox FireShot extension

Source: Firefox Facts