[SalesForce] Content Document download URL params

I spend hours to find a way to control download behavior of pdf-files (when to download and when to show inline) and did not find anything.

What I got so far:

the main thing that do all files magic is

/sfc/servlet.shepherd/ ….

1. We can download file by:

   • ContentVersion Id – /sfc/servlet.shepherd/version/download/<VERSION>
   • ContentDocument Id – /sfc/servlet.shepherd/document/download/<DOCUMENT>
   • Zip archive by Ids separated by slash – /sfc/servlet.shepherd/version/download/<VERSION 1>/<VERSION 2>?

2. For some reason in salesforce download links we can find the following parameter operationContext=S1 OR operationContext=CHATER, which seems do nothing

3. Also servlet.shepherd can show preview image of pdf /sfc/servlet.shepherd/version/renditionDownload?rendition=SVGZ&versionId=<VERSION>, where ?rendition= can be:

   • SVGZ
   • THUMB120BY90
   • THUMB240BY180
   • THUMB720BY480

All these options are not covered by official documentation and I feel there could be much more features. Does anybody know other options? Is there any documentation explaining all possible options?

UPD:
Added option with multiple files download as a zip provided by @cropredy