The ability to preview files created with Open Document format in the Proton Drive App on Android or web based app.

Open Document formats usually end in .odt (Documents), .ods (Spreadsheets), .odp (Presentations). These documents can be created by LibreOffice, Microsoft Office, and other open source Office alternatives.

Part of the target market for Proton products includes people who actively avoid products like Microsoft Office or Google Docs (which produces Microsoft office formats) in favor of Open Source alternatives like LibreOffice which produce an open source standard format.

Proton should support these formats natively for previews of such documents in email and proton drive.

Here is the desired user experience:

Files are created on workstation (could be windows or Mac or GNU/Linux.)

Files are created with LibreOffice or suite that supports open source document format.

Files are copied to Proton drive in native open format for a variety of reasons.

When file needs to be referenced by the owner on the mobile or web in Proton Drive, the user attempts to open the file.

The file should open and preview the contents of the file in the app or on the website.

The current behavior when attempting to preview the file is a message that states:

"Preview for this file type is not supported. (Option to download) "

I don't want to download the file for yet another unsecured copy of the file. I just want to preview it in the app.

There is no desire to edit it in the app. Just preview like a text files or a PDF.

Thank you.