Guidelines · WSG 3.5
Treat third parties the same as first parties
Third-party requests are frequently the majority of a page and the least reviewed part of it. They also load their own dependencies, so the cost is not what you measured when you added the tag.
How to satisfy it
- Inventory every tag and delete the ones nobody reads reports from.
- Load analytics and chat after the page is interactive, never render-blocking.
- Self-host small, stable assets instead of pulling a whole CDN library.
- Re-measure after adding any tag: the vendor snippet is rarely the whole payload.
Measured pages failing this guideline
From the 60 most recently measured pages. Each links to its full report.
- unstructured.io9 third-party domains account for 19.69 MB (93% of the page).2.36 g CO₂e · 21.15 MB · about 9.84 MB recoverable
- www.nytimes.com22 third-party domains account for 11.79 MB (79% of the page).1.69 g CO₂e · 14.83 MB · about 5.89 MB recoverable
- www.migros.com.tr10 third-party domains account for 7.33 MB (88% of the page).0.972 g CO₂e · 8.37 MB · about 3.66 MB recoverable
- www.flickr.com11 third-party domains account for 5.88 MB (100% of the page).0.665 g CO₂e · 5.90 MB · about 2.94 MB recoverable
- www.cnn.com33 third-party domains account for 4.97 MB (31% of the page).1.79 g CO₂e · 15.89 MB · about 2.48 MB recoverable
- www.smithsonianmag.com39 third-party domains account for 3.97 MB (89% of the page).0.410 g CO₂e · 4.46 MB · about 1.98 MB recoverable
- eliasfarhan.ch12 third-party domains account for 3.80 MB (50% of the page).0.689 g CO₂e · 7.59 MB · about 1.90 MB recoverable
- www.byhand.ai5 third-party domains account for 3.29 MB (99% of the page).0.305 g CO₂e · 3.34 MB · about 1.64 MB recoverable
- openai.com5 third-party domains account for 3.13 MB (37% of the page).0.778 g CO₂e · 8.53 MB · about 1.56 MB recoverable
- forum.donanimhaber.com50 third-party domains account for 2.88 MB (64% of the page).0.510 g CO₂e · 4.48 MB · about 1.44 MB recoverable
- www.netcup.com8 third-party domains account for 2.64 MB (96% of the page).0.253 g CO₂e · 2.75 MB · about 1.32 MB recoverable
- thenewcuriosityshop.substack.com3 third-party domains account for 2.57 MB (97% of the page).0.247 g CO₂e · 2.64 MB · about 1.29 MB recoverable