Original-size WordPress images uploaded in 2026 and served on top 1M pages have a median of 71.8 KB, against 17.7 KB for 2020 uploads still in use and 26.5 KB for 2024 uploads.
Source: PageSpeed Matters. HTTP Archive top 1M crawl, Sept 2026, mobile. Per-request medians.
Survivorship applies: only older images still in use are counted.
Source: WordPress Upload Size: Images Doubled in Weight in One Year - PageSpeed Matters