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 | 746 | 153 KB | 1 | 3 ms | 100% |
| google-analytics.com JS | 746 | 0 KB | 1 | 17 ms | 100% |
| altmetric.com JS | 66 | 179 KB | 4 | 321 ms | 100% |
| cloudfront.net JS | 66 | 1 KB | 1 | 19 ms | 100% |
| dimensions.ai JS | 37 | 662 KB | 6 | 262 ms | 100% |
| google.com JS | 26 | 23 KB | 1 | 0 ms | 100% |
| gstatic.com JS | 23 | 52 KB | 2 | 0 ms | 100% |
| googleapis.com JS | 23 | 0 KB | 1 | 0 ms | 100% |
| ytimg.com | 21 | 76 KB | 1 | 0 ms | 100% |
| youtube-nocookie.com JS | 19 | 1.1 MB | 8 | 484 ms | 100% |
| noembed.com | 18 | 1 KB | 1 | 35 ms | 100% |
| doubleclick.net JS | 6 | 1 KB | 5 | 384 ms | 100% |
| powerbigov.us JS | 4 | 17.9 MB | 77 | 7405 ms | 100% |
| facebook.net JS | 4 | 246 KB | 2 | 245 ms | 100% |
| usgovcloudapi.net | 4 | 101 KB | 9 | 0 ms | 100% |
| powerbi.com | 4 | 30 KB | 2 | 0 ms | 100% |
| azure.com | 4 | 4 KB | 2 | 0 ms | 100% |
| googleadservices.com | 4 | 1 KB | 1 | 67 ms | 100% |
| facebook.com | 4 | 0 KB | 1 | 113 ms | 100% |
| youtube.com JS | 3 | 1.1 MB | 8 | 449 ms | 100% |
| go-mpulse.net JS | 3 | 58 KB | 2 | 0 ms | 100% |
| akstat.io | 3 | 0 KB | 1 | 0 ms | 100% |
| jquery.com JS | 2 | 23 KB | 2 | 50 ms | 100% |
| ggpht.com | 2 | 4 KB | 1 | 0 ms | 100% |
| akamaihd.net | 2 | 0 KB | 4 | 0 ms | 100% |
| bootstrapcdn.com JS | 1 | 215 KB | 2 | 90 ms | 100% |
| jsdelivr.net JS | 1 | 8 KB | 1 | 96 ms | 100% |
| office.net | 1 | 2 KB | 3 | 0 ms | 100% |