When you use Lite mode, some of your web traffic may go through Google servers before being downloaded to your device. If the page is loading slowly, Google servers may simplify it so that less data gets downloaded to your device. Most of the time, your pages will look and work the same.
If you’re using Lite mode, keep in mind that:
Currently Google’s Lite mode (formerly Chrome’s Data Saver) is only available for Android devices.
If you’re on a page that was simplified, you can go back to the original page without changing your settings. To see the original page, at the top, tap Lite and then Load original page.
The feature is certainly much more useful on mobile: It can save you money if you’re on a tight data plan, in addition to speeding up page loads and beefing up security. Chances are that browsing on the desktop is already quite speedy for most people, and Google’s Safe Browsing feature is already built into Chrome for Windows, Mac, and Linux.