Apple's Preview application can open entire folders of images, but this feature should be used cautiously.

How to open files on a Chromebook The Files app makes it easier to find and open files on ChromeOS. Like other operating systems, you only need to double-click a file to open it most times.

That means, for example, you can do things like clicking on a document file via the Chrome OS file manager and open it with LibreOffice -- without even starting a Linux session.