JS API to Save as PDF (Word, PowerPoint, Excel) similar to Document.SaveAs2

For Excel, also being able to select what sheets to use and if the user set a Print area that should be accounted for. This seems to be possible with VSTO addins.

lindalu-MSFT 
This would be a great extension, being able to create a specific version of PDF. Government agencies usually require PDF/A format, so not being able to create such a PDF (while the app can do that) is a showstopper for many use cases in the new web/js add-in world.

lafepb that is correct, thank you. But getFileAsync-API does not include options. For example, when saving as a PDF I cannot select pages to include or the print quality which are available in VSTO addins.

If I am not misunderstanding your request, that already exists in the getFileAsync-API: https://docs.microsoft.com/en-us/javascript/api/office/office.document?view=word-js-1.3#getFileAsync_fileType__callback_