App Data\Local\Chromium on your old machine, copy it to your new one and uncompress (in the same place), install Chromium, profit.
With the migration to a new computer, I’ve managed to keep all my Chromium settings. The steps I did are the following:
On the old computer
Note the chromium version you’ve installed
Note: this might be huge! To reduce it, clean the
Note the plugins (optional) - this might be useful if you have plugins depending on external apps like 1Password
On the new computer
Download and install Chromium. Ideally, the same version as on the desktop.
Important: Don’t launch it!
Copy the archived
Chromiumfrom the old computer to the new one
Uncompress it in your new