Dropbox Browser Encryption

Hi, folks!

I'm looking to encrypt all my files on the cloud using Cryptomator. I'm understanding the basics of it and have successfully done so for Dropbox files saved on my PC. However, the bulk of it are on the cloud and are collectively too large to save outside of it. Is there a way to transfer all of these into a Cryptomator drive just using the browser?

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Thank you.

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