Is it possible to crypt files already in Dropbox without reupload?

Hello ,

I would like to learn is it possible to crypt files without reupload them to Dropbox. I may be same account or different one,

Thank you

No.

Rclone does the encryption so no matter the backend, it requires an upload.

is there any way to do it like server-side copy or move ?

Zero way.

It requires a reupload as rclone is doing the encryption.

hello and welcome to forum,

if you do not want to use local internet connection,
then rent a cheap cloud vm or seedbox, run rclone on that.

The problem is , it's about 2pb files, it will take too much time