I’m building an application that needs to prevent users from downloading certain files and folders through the Google Drive API. I’ve been looking through the documentation but can’t seem to find a way to disable downloads programmatically.
I noticed there’s a capabilities.CanDownload property but it appears to be read-only. I also checked the permissions settings but none of them seem to control download access specifically.
Has anyone managed to restrict file downloads via the API? Any help would be great.
The Google Drive API has inherent limitations when it comes to preventing downloads completely. I’ve worked with similar requirements and found that the most effective approach is implementing application-level restrictions rather than relying on the API alone. You can control file access by managing permissions more strategically - share files with view-only access and revoke permissions dynamically based on your application logic. Another method I’ve used successfully is serving files through your own application as a proxy rather than giving users direct Drive URLs. This way you maintain control over who can access what and when. The trade-off is increased complexity in your backend architecture, but it gives you the granular control that the Drive API doesn’t natively support. Keep in mind that technically savvy users can still find workarounds, so this works best for general access control rather than high-security scenarios.
Unfortunately, the Google Drive API doesn’t provide a direct method to disable downloads for files once they’re uploaded. The CanDownload capability you mentioned is indeed read-only and reflects the current state rather than allowing you to modify it. What you might want to consider is using Google Drive’s sharing restrictions at the organizational level if you’re working within a Google Workspace environment. Administrators can set policies that prevent downloading, printing, or copying for certain file types. Alternatively, I’ve seen developers work around this by storing sensitive files in a different cloud storage service that offers more granular access controls, then using the Drive API only for metadata and file organization. This approach requires more architecture planning but gives you the download control you’re looking for.
actually you can kinda do this by setting viewer permissions and using the copyRequiresWriterPermission flag to true when sharing files. wont completely block downloads but makes it harder for users to grab copies. also check if your using workspace admin console - theres some DLP settings there that might help restrict file access