How to open Mac Keynote presentations on Ubuntu?
How to open Mac Keynote presentations on Ubuntu? Can it be imported to Impress?
Create an iCloud account (https://www.icloud.com). Its free. Upload the keynote presentation. Once uploaded, you can click on the file and "download a copy" the file as either a PDF, PPT. or a key file.
There is an online conversion service at http://www.zamzar.com/ (assuming that your file does not contain confidential information ...)