ToyViewer is a lot more than just a simple image viewer for Mac. With its assistance, you can convert pictures between various image formats, preview the photos from a directory within your Mac as a slideshow presentation, edit snapshots with minimum effort, and so much more.
You can use this program whenever you need to resize images, enhance the color tone of a picture or apply dozens of visual effects to your favorite photographs. Its settings are very simple to configure, so you can easily handle this application, even if you're a beginning computer user.
Furthermore, the built-in slideshow tool enables you to preview your photo collection in fullscreen mode, on top of other running programs. You can add transition effects, set the preferred interval of time for changing images, etc.
I also like the fact that this application can also be used for converting pictures to various formats. In addition, with just one click, you can set the loaded picture as an icon for a directory within your Mac.
In conclusion, ToyViewer proves to be a smart alternative to Preview (Mac's default image viewer) for opening and editing pictures on your computer. It's feature-rich, provides you with quality output files, and is free.