Essentially they all do the same thing, but not all applications can open each type of file. The main issue for Keynote users is that PowerPoint is unable to read .key formats and therefore makes ...

There are two very useful online file converters called Zamzar and Cloudconvert that can convert .key to .pptx file format within moments. You will get a download ...

When you double-click on a file in Windows, it will automatically open a default program that is configured to manage these types of files. It is common, though, want or need to use a different ...