www.cdc.gov: third parties

Third-party origins serving resources to www.cdc.gov across the 735 page(s) measured in 2026-W33. 29 distinct third-party domains, 18 of them serving JavaScript (JS). Costs are medians per page the vendor appears on. · Download CSV

Third-party JavaScript is easy to add and often reduces accessibility and performance — it injects DOM the site owner never reviewed and adds load time. "Pages w/ finding" is the share of pages carrying this vendor that also had an accessibility finding: an association to investigate, not proof the vendor caused it. Third parties vary per page, so a vendor on few pages may simply not have been sampled elsewhere.