How do I open an apple keynote file in windows?

The following websites can convert the .key to PDF online:

• https://cloudconvert.com/key-to-pdf (tested on 2019-02-01)
• http://www.zamzar.com (tested on 2013-08-15)

Also, the .key is a zip archive: if you unzip you may be able to see a thumbnail for each slide.

There is now a keynote viewer for the browser using icloud. If you have a Apple device, you can make an icloud account, and upload the file to your account. then go to icloud's website and play it on any browser.

Since it is a proprietary format, you will need to use KeyNote to open it.

You obviously can't export the file as anything since you would need to open it first in order to export it ;-)

I know that Keynote files can be "played" in QuickTime on a Mac, but I don't know how feasible that is in Windows. Worth a try.

Creating an apple account is free and Key note is also free to use with that on ICloud. So we just needed to go to https://www.icloud.com create a user, log in with that and we have the abilities online on the browser