Estimate data used browsing the web.
General web browsing is dominated by page weight, which has grown to a median of roughly 2.2 MB for desktop pages — mostly images, fonts and third-party scripts. Multiplying page count by page weight gives daily traffic, and because advertising and tracking scripts commonly account for a third or more of that weight, content blocking produces a measurable rather than notional saving.
Browsing data with content blocking
Effective page weight = page weight x (1 - blocked share); monthly GB = pages per day x effective weight x active days / 1024
The HTTP Archive median is around 2.2 MB for desktop and 2.0 MB for mobile. News and retail sites frequently exceed 5 MB, while text-focused documentation sites can be under 200 KB.
Measurements commonly land between 25 and 50 percent on ad-supported sites, and higher on news sites. Sites with little third-party content see almost no reduction, so treat 35 percent as a mixed-browsing average.
Because a page loads once and then sits idle, while a video stream transfers continuously. An hour of reading might be 30 MB; an hour of HD video is around 2 GB, roughly seventy times more.