www.cdc.gov: third parties
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.
| Vendor (registrable domain) | Pages | Median bytes | Median requests | Median load | Pages w/ finding |
|---|---|---|---|---|---|
| googletagmanager.com JS | 441 | 151 KB | 1 | 2 ms | 100% |
| google-analytics.com JS | 441 | 0 KB | 1 | 16 ms | 100% |
| altmetric.com JS | 66 | 166 KB | 4 | 240 ms | 100% |
| cloudfront.net JS | 66 | 1 KB | 1 | 12 ms | 100% |
| dimensions.ai JS | 18 | 662 KB | 6 | 362 ms | 100% |
| gstatic.com JS | 16 | 103 KB | 4 | 0 ms | 94% |
| google.com JS | 15 | 46 KB | 2 | 0 ms | 100% |
| googleapis.com | 15 | 0 KB | 2 | 0 ms | 93% |
| ytimg.com | 14 | 80 KB | 2 | 0 ms | 100% |
| youtube-nocookie.com JS | 13 | 1.1 MB | 8 | 576 ms | 100% |
| noembed.com | 12 | 1 KB | 1 | 40 ms | 100% |
| powerbigov.us JS | 3 | 7.2 MB | 36 | 2860 ms | 100% |
| usgovcloudapi.net | 3 | 73 KB | 5 | 0 ms | 100% |
| powerbi.com | 3 | 15 KB | 1 | 0 ms | 100% |
| ggpht.com | 3 | 4 KB | 1 | 0 ms | 100% |
| azure.com | 3 | 2 KB | 1 | 0 ms | 100% |
| youtube.com JS | 2 | 5.4 MB | 41 | 9822 ms | 100% |
| doubleclick.net JS | 2 | 1 KB | 17 | 134 ms | 100% |
| socrata.com JS | 1 | 25.2 MB | 36 | 5851 ms | 0% |
| cloudflare.com | 1 | 373 KB | 3 | 100 ms | 0% |
| facebook.net JS | 1 | 133 KB | 2 | 21 ms | 100% |
| fontawesome.com | 1 | 58 KB | 1 | 46 ms | 0% |
| tylertech.com | 1 | 3 KB | 2 | 508 ms | 0% |
| googleadservices.com | 1 | 1 KB | 1 | 34 ms | 100% |
| facebook.com | 1 | 0 KB | 1 | 38 ms | 100% |