Screengrab! can save an entire document, not just what you can see on screen. Screengrab! will happily capture just a frame too.

Here’s an example whynot!
A wide sample page

How?
Select “Complete Page/Frame” from the menu. To capture a frame, access the menu by right-clicking in the frame.

A bit of background
Why is this handy? Well, if you’ve ever needed a full-size screenshot of a web-page, you’ll know the pain of doing multiple Print Screens and pastes into Paint or Photoshop. Pressing one button is lots easier.

This sort of thing is particularly useful for web designers and theme developers.

Older versions of Screengrab! (pre 0.92) did this by capturing a portion of the page, scrolling a little, capturing the next portion, scrolling some more and so on. The effect was actually quite cool (if I do say so myself) and the implementation was insanely clever (again, patting myself on the back). This all required Java to work.

The newer versions of Screengrab! just use the Canvas element to do it. Basically you can just politely ask for the image. This doesn’t require much clever coding really, so it’s less impressive than before.