I don't know, but syncing was never a problem for by tools. Use bitwarden, lastpass or some other available, good working tools and don't waste your time like that
+1 for Bitwarden, if you have to go the open-source/self-hosted route.
pass and browserpass if you want to go the web route.
I'm also a fan of Bitwarden. It's e2e encrypted, so they never get to see yr password. The Browser plugins are opensource and an open source server impl exists (but since it's e2e is not essential for security).
Bitwarden is one of the best pieces of software I use regularly. Anecdotally, I've had awesome success with it and love the dev behind it.