How to import Chromium Browser-Data to Chrome

Do a copy of your ~/.config/chromium directory to your ~/.config/google-chrome directory.

You can also do a symlink, like this:

ln -s ~/.config/chromium ~/.config/google-chrome

That will use the chromium config as the "authoritative"/"master" config directory, with chrome just looking into chromium.

It's also a wise decision to quit Chromium and/or Chrome so that you don't have any issues with config directories.

The answer is almost the same for all browsers.

In Chromium, go to Bookmarks/Bookmarks Manager (NOT to "Import bookmarks and settings")- "Organize": "Export bookmarks to HTML file" and save your bookmarks as html file. Then in Google Chrome (or very similarly in any other browser) go to Bookmarks manager and in the same way import bookmarks from the HTML file that you just saved. Save your bookmarks as html from time to time and import them when you need them in new browsers.

Shortcut to access bookmarks manager: Shift-Ctrl-O.