vital-scans open quality ledger

www.cdc.gov: third parties

Third-party origins serving resources to www.cdc.gov across the 767 page(s) measured in 2026-W29. 30 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.

Third-party vendors on www.cdc.gov, 2026-W29 — sortable.
Vendor (registrable domain) Pages Median bytes Median requests Median load Pages w/ finding
googletagmanager.com JS 765 149 KB 1 3 ms 100%
google-analytics.com JS 765 0 KB 1 18 ms 100%
altmetric.com JS 104 169 KB 4 271 ms 100%
cloudfront.net JS 104 1 KB 1 23 ms 100%
dimensions.ai JS 56 662 KB 6 327 ms 100%
google.com JS 27 23 KB 1 0 ms 100%
googleapis.com JS 23 0 KB 1 0 ms 100%
gstatic.com JS 21 52 KB 2 0 ms 100%
ytimg.com 20 66 KB 1 0 ms 100%
youtube-nocookie.com JS 18 1.1 MB 8 579 ms 100%
noembed.com 18 1 KB 1 25 ms 100%
doubleclick.net JS 10 1 KB 4 365 ms 100%
facebook.net JS 8 234 KB 2 108 ms 100%
googleadservices.com 8 1 KB 1 64 ms 100%
facebook.com 8 0 KB 1 33 ms 100%
powerbigov.us JS 4 7.5 MB 37 2658 ms 100%
usgovcloudapi.net 4 59 KB 5 0 ms 100%
ggpht.com 4 4 KB 1 0 ms 100%
azure.com 4 2 KB 1 0 ms 100%
youtube.com JS 3 1.1 MB 8 545 ms 100%
powerbi.com 3 15 KB 1 0 ms 100%
go-mpulse.net new JS 2 58 KB 2 0 ms 100%
akstat.io new 2 0 KB 1 0 ms 100%
govdelivery.com new JS 1 233 KB 9 1064 ms 100%
bootstrapcdn.com JS 1 215 KB 2 86 ms 100%
jquery.com JS 1 30 KB 1 194 ms 100%
jsdelivr.net JS 1 8 KB 1 188 ms 100%
usajobs.gov new 1 1 KB 2 211 ms 100%
2o7.net new 1 0 KB 2 116 ms 100%
akamaihd.net new 1 0 KB 4 0 ms 100%