No official standalone application is available for download on Windows. Because Keynote is exclusive to Apple’s ecosystem, you cannot install a native .exe file on a PC.
While the iCloud version is highly capable, there are a few limitations for Windows users compared to the Mac app: YouTube·How To Mark download apple keynote for windows
To edit an existing .key file, drag and drop it into the browser window. No official standalone application is available for download
: You can play your slideshow directly in the browser's Slide Show mode . To save a copy to your PC, click the "More" (three dots) icon and select Download a Copy to save it as a Keynote, PDF, or PowerPoint file. Key Differences Between Web and Desktop Versions download apple keynote for windows