9 Mar 2015
I have only recently learnt about this – it’s a nice trick available from the Firefox Developer Toolbar
The Developer Toolbar is NOT the same as the Web Developer menus – it’s a command-line which gives you access to a number of developer options from within Firefox.
Press SHIFT+F2 to open the Developer Toolbar.
Once the toolbar is open, you can tell Firefox to take a screenshot of the current viewport with this command:
You can pass an additional argument to get a screenshot of the entire page:
screenshot homepage.png --fullpage
All images are saved to the browser’s default download directory.