This is a good extension, I like that I didn't need to agree to all my viewing history, etc being made available to them. This might still be the case but at least I didn't have to agree to it...

Unlike the screen capture that comes with Firefox it will try to do all sizes of pages, not matter how long. But the larger the page the longer it takes, so be patient, also it might miss parts. Depending on where this happens it might not be a problem, but if the web page is quite long it might be better to do it in 2 or more sections. Then you can always put them all together in an image app.

I like that I can edit the image before saving, so I can cut out what I don't want and also I like that I can paste in the site address so I can find the page later if I need to. And lastly it lets you provide the filename, not all screen capture extensions let you do that. On the whole a good effort.