I am a software engineer and designer from Japan.
MobWeb.Goody allows you to capture the entire web page on your mobile phone and save the image in an album or share. As easy as one two three, simply enter the website's URL you wish to capture and with a press of a button and you'll have the whole page screen shot image in portrait view whether it's public or protected (authentication page).
MobWeb.Goody for iPad easily captures the web page displayed on your browser for both portrait and landscape mode. You can switch features from capturing a whole page (support vertical scroll) to visible region of a page. Apart from just saving as jpeg images, you can also save in lossless PNG format that retains clarity/sharpness of image and text. Furthermore, this page capture app works on protected (authenticated) pages.