To quickly see the size of a webpage in MB used the network tab in Google Chrome developer tools.
🤨 TIP, browse page using "Guest" - it is important to browse the page as the person visiting because if you browse a page that you have previously viewed you may see a cached version.
🤨 TIP, to find MB in Google Chrome, use view to find developer > developer tools and select the network tab - MB is shown at the bottom of the screen. If it is not shown refresh the page.
Feel very welcome to make suggestions about how to find the total size of a webpage in megabytes with a comment.