You could have downloaded page2png 1.2.1 for Mac from our software library for free. Page2png for Mac relates to Design & Photo Tools. The actual developer of this free Mac application is Matthew Hipkin.
From the developer:
Originally a Qt5 based application page2png captures a website and saves it as a PNG image, you can specify whether you want the entire page (regardless of your screen resolution) or a certain size.
Main features:
- Cross platform
- Uses Webkit rendering engine
- Easy to use
You may want to check out more software for Mac, such as Cuadro or Resize Now, which might be similar to page2png.