https://wccftech.com/no-chrome-extensions-websites/

On Google Chrome, developers can have users install extensions from their own websites. However, Google is now planning to enforce a new policy that will no longer allow such off-Store installations, as new extensions can only be installed from Chrome Web Store. The announcement comes amid security concerns over how users can be duped into installing malicious software.

“We continue to receive large volumes of complaints from users about unwanted extensions causing their Chrome experience to change unexpectedly,” James Wagner, Google’s Extensions Platform Product Manager, wrote. “The majority of these complaints are attributed to confusing or deceptive uses of inline installation on websites.”