Preview of google drive files without login

Question

How we can get preview of google drive files in web without login into google account. In current scenario only public files are visible through embed link, we need to show

Answer 1

I think "Publish" is what is you need. The file can still be "Private".

Publish and embed Google Docs, Sheets, Slides & Forms To make a document, spreadsheet, or presentation, available for a large audience to see, publish a file. After you publish your file, you’ll have a URL that you can send to anyone or embed into your website.

Answer 2

Here in lies the difference between the term "public" and "private". The way google authentication works is that any data that is public is free for anyone to see. If you set the file to public anyone can open it without being logged in or authenticated to Google.

Private files on the other hand you must have permission to access. There is no way to preview a file you do not have permissions to access. There is no workaround for this.