3) Put a check mark in the Use keyboard shortcuts to zoom checkbox so that zoom becomes enabled on your Mac. Now that you have zoom enabled on your Mac, you're free to try it out. Using zoom on your Mac. There are a number of keyboard shortcuts you can use to play with zoom on your Mac. If you have upgraded your Mac OS X to Yosemite, you will find that there are plenty of changes to the user interface. One of them is the behavior of the green maximize button on every window. In previous versions of OS X, clicking the green button will maximize the window to fit the document width.
Do you want to zoom screen contents on Windows based computer? QZoom is an easy to use screen zoom and operation tool like the one in Mac OS X. It allows you to zoom in and out display screen to see finer details. It zooms every elements on the screen, even a Youtube video playing on the computer.
How to Zoom using QZoom
It sits on the system tray and you can click right click icon to open 'Settings' dialog box. You can use mouse scroll to zoom in/out screen. You can also set keyboard shortcuts to zoom in/out screen. Hit the ESC key to return to normal screen display.
Demo & Downoad QZoom
Following video shows how to use QZoom program to zoom in or out the screen display.
Os X Zoom Screen Capture
This cool program is available in both install-able version and portable version(no install). Download QZoom installer – QZoom portable and zoom to any part of the screen like in MAC OSX with ease for viewing finer details.