That's a great usecase! Is your browsing data encrypted?
New Other Stuff Nostr app just dropped :
https://chromewebstore.google.com/detail/oblisk-sync/jbjbhombfpkgggbghnjgdigbkflocmlk
Still in beta and not public on the web store.
Try it out and tell your friends.
Discussion
Thank you! Yes, all the data that is saved is encrypted with your nostr private key that never leaves your browser.