Users of earlier versions of the supported browsers recommended by Turnitin are encouraged to upgrade to the latest version of those browsers which are: Internet Explorer (IE) 8 or higher, Google Chrome 23 or higher, Mozilla Firefox 15 or higher, and Safari 5 or higher. Please visit Turnitin's Requirements page for more details.
The following are the recommended OS (Operating System) for both Windows and Mac: Windows 8.1 or higher, MAC OS X v10.6.8 or higher.
Please note that while users may be able to access Turnitin using an unsupported version of Internet Explorer (or another unsupported browser), we will not be able to resolve any issues that may occur for those users.* We also suggest that you also ensure that your internet connection speed is adequate as well by going to SpeedTest.net, to test it accordingly.
* A note from Turnitin.com's website.