1. Open RegEdit from the Start menu and create the following Registry Key

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome*URLBlocklist*

2. For each URL you want to block just create a new String value, named by a number.

Example

Name: 1 Value: https://*.google.com

3. Set the command line flag --install-url-blocklist-handlers. Right click Chrome's shortcut, go to Properties, then to the Shortcut tab, and append the switch to the end of the Target value.

4. Restart your Chrome or Chromium based Browser.

All google.com subdomains will now be blocked.

For more patterns check the info:

• https://www.chromium.org/administrators/url-blocklist-filter-format

For more command line switches:

• https://peter.sh/experiments/chromium-command-line-switches/