The .iwa file extension is associated with iWork office suite for Mac and iOS. IWA files store data like style settings and metadata for iWork documents. IWA files simplify reading and editing iWork documents on iOS devices by minimizing RAM usage. They are usually stored in Index.zip bundles with Pages, Numbers, or Keynote documents.
IWA uses Snappy compression format, replacing Index.xml files storing the same content. IWA files are not meant to be directly opened. Instead, they are used internally by iWork applications like Pages, Numbers and Keynote.
You may need to update the iWork applications to open .iwa files. Only the latest versions support the current IWA format. Or scan the IWA file for viruses with antivirus software.
If Windows doesn’t recognize the .iwa extension, you’ll get a message to select an app to open the file. To convert .iwa files, open in a reader and print to a PDF printer to create a PDF version. On Windows 10, double-click the .iwa file to check if it supports the format. It will either open in the matching application.
Apple Keynote