How to randomly pad files before encryption to prevent file fingerprinting?

Hi, I was planning to encrypt my files with GPG for safety before uploading them to the cloud. However, from what I understand GPG doesn't pad files/do much to prevent file fingerprinting. I was looking around for a way to reliably pad files and encrypt metadata for them but couldn't find anything. Haven't found any recommendations on the privacyguides website either. Any help would be appreciated!

Thanks