Pearl Crescent Page Saver: Firefox extension
I just installed the Pearl Crescent extension recently.
At this point I would say “recommended”. It adds 2 commands to your context menu. “Save visible portion of page”, and “Save entire page”.
I’ve used SnagIt in the past to do this type stuff, but for just taking a quick capture, it’s somewhat cumbersome. And my primary use case is taking captures of web pages.
The killer feature of SnagIt is that it can automatically scroll down and capture an entire web page. This extension does the same thing, and does it much quicker.