Snapito is described as 'Full page screenshots' and is an website in the Photos & Graphics category. There are more than 10 alternatives to Snapito, not only websites but also apps for a variety of platforms, including Mac, Windows, Google Chrome, Firefox and Linux. The best alternative is ShareX, which is both free and Open Source. Other great sites and apps similar to Snapito are Greenshot (Freemium, Open Source), Spectacle (Free, Open Source), GoFullPage (Formerly Full Page Screen Capture) (Freemium, Open Source) and FireShot (Freemium).
ShareX is a free and open source program that lets you capture or record any area of your screen and share it with a single press of a key. It also allows uploading images, text or other types of files to over 80 supported destinations.
Spectacle is a simple application for capturing desktop screenshots. It can capture images of the entire desktop, a single monitor, the currently active window, the window currently under the mouse, or a rectangular region of the screen.