CDN impact WordPress sites
Time to first byte by CDN provider, measured in real-user Chrome data.
1
At a glance the headline numbers for CDN impact
Time to first byte by CDN provider, measured in real-user Chrome data.
15
Providers ranked
After min-sites filter
86,899
Sites in sample
Combined across all items
1.9s
Best FCP (p75)
Akamai
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop field datacorewebvitals.io/state-of-cwv
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The ranking sorted by FCP at p75, fastest first
| # | Provider | FCP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Akamai | 1.9s | 68.9% | 2,240 | |
| 2 | Azure CDN | 2.0s | 68.1% | 109 | |
| 3 | Imperva/Incapsula | 2.0s | 73.3% | 65 | |
| 4 | Vercel Edge | 2.0s | 65.5% | 322 | |
| 5 | jsDelivr | 2.0s | 66.6% | 3,345 | |
| 6 | KeyCDN | 2.1s | 64.0% | 275 | |
| 7 | Fastly | 2.1s | 65.5% | 23,146 | |
| 8 | Cloudflare | 2.1s | 64.8% | 26,661 | |
| 9 | Bunny CDN | 2.2s | 63.9% | 5,227 | |
| 10 | CloudFront | 2.2s | 63.0% | 13,885 | |
| 11 | Google Cloud CDN | 2.2s | 63.4% | 4,408 | |
| 12 | cdnjs | 2.2s | 62.6% | 4,956 | |
| 13 | unpkg | 2.4s | 57.2% | 1,999 | |
| 14 | Netlify Edge | 2.5s | 57.4% | 165 | |
| 15 | Sucuri | 2.7s | 52.6% | 96 |
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop field datacorewebvitals.io/state-of-cwv
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Passing FCP per CDN which group passes the FCP most often
CDNSitesPassing FCPp75
Imperva/Incapsula 0.1% 65 2.0s
Akamai 3.5% 2,240 1.9s
Azure CDN 0.2% 109 2.0s
jsDelivr 5.3% 3,345 2.0s
Fastly 36.6% 23,146 2.1s
Vercel Edge 0.5% 322 2.0s
Cloudflare 42.1% 26,661 2.1s
KeyCDN 0.4% 275 2.1s
Bunny CDN 8.3% 5,227 2.2s
Google Cloud CDN 7% 4,408 2.2s
CloudFront 21.9% 13,885 2.2s
cdnjs 7.8% 4,956 2.2s
Netlify Edge 0.3% 165 2.5s
unpkg 3.2% 1,999 2.4s
Sucuri 0.2% 96 2.7s
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good FCP (1.8s at p75) · one value per site
69% of Akamai sites pass FCP. Unpkg trails 12 points behind, leaving 43% of its sites failing. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop field datacorewebvitals.io/state-of-cwv
4
All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75
LCP
INP
CLS
FCP
TTFB
Cloudflare 42.1%
742.5s
10063ms
770.10
652.1s
341.8s
Fastly 36.6%
742.6s
10065ms
760.10
662.1s
341.8s
CloudFront 21.9%
722.6s
10066ms
750.11
632.2s
321.8s
Bunny CDN 8.3%
732.6s
9965ms
750.10
642.2s
331.8s
cdnjs 7.8%
722.6s
10063ms
760.10
632.2s
331.8s
Google Cloud CDN 7%
722.6s
10068ms
750.11
632.2s
331.8s
jsDelivr 5.3%
762.5s
10063ms
800.09
672.0s
351.7s
Akamai 3.5%
772.4s
10062ms
810.08
691.9s
361.7s
unpkg 3.2%
682.8s
9966ms
760.10
572.4s
302.0s
Vercel Edge 0.5%
762.4s
10070ms
680.13
662.0s
361.7s
KeyCDN 0.4%
702.6s
10061ms
660.12
642.1s
171.8s
Netlify Edge 0.3%
662.8s
10071ms
770.10
572.5s
332.1s
Azure CDN 0.2%
822.3s
9883ms
780.09
682.0s
391.7s
Sucuri 0.2%
613.2s
10057ms
750.10
532.7s
262.2s
Imperva/Incapsula 0.1%
802.3s
10063ms
770.10
732.0s
481.4s
60%95%+ passing Cell: pass rate, small number = p75 · faded rows: under 100 sites
One row per CDN, one column per vital - the cell is the share of sites passing, the small number the p75. No toggling needed to see where the category actually differs.
Akamai leads on FCP: 69% of its sites pass. Netlify Edge trails at 57%. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop field datacorewebvitals.io/state-of-cwv
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Related signals Marketing pixels (10) → Bot detection (8) → Forms (4) → Personalization (6) → 203,892 crawled sites with Chrome field data, representing millions of real page loads · How we measured
203,892 crawled sites with Chrome field data, representing millions of real page loads. How we measured.