https://thenextweb.com/syndication/2019/12/16/the-pros-and-cons-of-how-google-chrome-encrypts-dns-activity/

Thanks to the expansion of HTTPS, the secure version of the original HTTP protocol, most internet traffic is encrypted today, improving your privacy and protecting your browsing data from the wary eyes of eavesdroppers. Major browsers like Google Chrome and Firefox warn you if you visit an unencrypted website.

But while progress has been great, not all of your internet traffic is encrypted. The domain name system (DNS), the protocol used to convert domain names (e.g., google.com) to IP addresses (e.g., 74.125.157.99), still remains in plain text, which can reveal much about your browsing habits.