Full ScreenShot ?

How we can capture Full page screenshot firefox and chrome extenison capture the images but Dont capture parallex images. Or parallex section. How can we get get full screen snapshot .

Help Needed

I am using Awesome Screenshot Firefox Add-on and it works perfectly fine with parallax images. Just make sure if you have appear-in-view type of effects on the page to scroll down before you capture the page so they are visible on the screenshot.

its appers but when i capture the parallex background image is blank.