Why has browsing the internet become so resource intensive and what can you do to bring your old PC back up to date?

Question

Browsers

Working for a dozen years at a moderately productive computer and did not notice how the Internet has become a new "benchmark" for an office computer! 1800 MHz CPU and 2 GB of RAM are no longer enough for comfortable browsing, and on the old Celeron with a frequency of up to GHz, page browsing generally turns into hell.
What's the matter? Is it possible to disable something else in order to normally use the Internet from an old computer?

Answer 1

Well, here you need to clarify whether you are using new browsers or the tenth Opera is still on your computer)))) If modern, then you can consider that you have received an answer to your question. Modern browsers are very gluttonous. Yes, and some sites contain a lot of javascript code, which slows down the page itself and surfing the site. It also loads a lot of images, fonts and CSS code, which slow down the page loading. In any browser in developer mode, open the Network tab and see what and how it loads

Answer 2

Look at first how many resources the rest of the processes in the system are eating. Secondly, tell the OS how much free RAM, disk and processor utilization.
Install a lightweight distribution like Linux Mint or Calculate of some kind =)
I also saw all sorts of stripped-down Windows XP on trackers for a long time, if Linux is not acceptable for your task.