Every step below is from an official source
Switch from Google Password Manager to Proton Pass
What to do at Google Password Manager before you leave, what Proton Pass needs when you join, and everything else the switch touches. Your full plan is built in your browser and stays there.
Official sources reviewed . How we review sources
At Google Password Manager, before you leave
Export passwords from Chrome on a computerBefore
In Chrome, go to More > Passwords and autofill > Google Password Manager > Settings. Scroll to Export passwords and select Download file.
Delete the exported password fileAfter
If you don't delete the password file, anyone who uses the device can open it and see your passwords.
At Proton Pass, when you join
Import a LastPass CSV in the browser extensionDuring
Export your LastPass vault as a .csv file. In the Proton Pass browser extension, go to Settings, then the Import tab, choose LastPass as the provider, add the file and click Import.
How to import from LastPass to Proton PassProton. ReviewedImport your Chrome passwordsDuring
Export your Chrome passwords as a .csv file. In the Proton Pass extension, go to Settings, then Import, choose Chrome as the provider and upload the file.
How to import to Proton Pass from ChromeProton. ReviewedFind the guide for your old managerBefore
Proton Pass's import tool works with most major password managers. Proton has separate guides for 1Password, Bitwarden, Dashlane, LastPass, Chrome, Safari and others.
Import passwords to Proton PassProton. Reviewed
Then: everything else the switch affects
The steps above are what Google Password Manager and Proton Pass say. Your full checklist adds the accounts, codes, payments and devices that depend on your password manager, in a safe order. It's built from your answers, in your browser.