CDN impact
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
347,010
Sites in sample
Combined across all items
2.1s
Best LCP (p75)
Google Cloud CDN
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by LCP at p75, fastest first
| # | Provider | LCP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Google Cloud CDN | 2.1s | 85.1% | 34,465 | |
| 2 | KeyCDN | 2.1s | 85.1% | 1,307 | |
| 3 | jsDelivr | 2.1s | 83.9% | 14,565 | |
| 4 | cdnjs | 2.2s | 82.3% | 18,880 | |
| 5 | Fastly | 2.2s | 82.3% | 90,115 | |
| 6 | Bunny CDN | 2.2s | 82.3% | 19,200 | |
| 7 | Azure CDN | 2.2s | 82.7% | 907 | |
| 8 | Cloudflare | 2.2s | 81.5% | 91,586 | |
| 9 | Akamai | 2.2s | 81.2% | 8,164 | |
| 10 | CloudFront | 2.2s | 81.2% | 56,531 | |
| 11 | Vercel Edge | 2.3s | 81.3% | 3,180 | |
| 12 | Imperva/Incapsula | 2.3s | 78.7% | 523 | |
| 13 | unpkg | 2.4s | 76.4% | 6,211 | |
| 14 | Netlify Edge | 2.5s | 75.5% | 1,165 | |
| 15 | Sucuri | 2.7s | 70.2% | 211 |
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing LCP per CDN which group passes the LCP most often
CDNSitesPassing LCPp75
Google Cloud CDN 16.3% 34,465 2.1s
KeyCDN 0.6% 1,307 2.1s
jsDelivr 6.9% 14,565 2.1s
Azure CDN 0.4% 907 2.2s
Fastly 42.7% 90,115 2.2s
Bunny CDN 9.1% 19,200 2.2s
cdnjs 9% 18,880 2.2s
Cloudflare 43.4% 91,586 2.2s
Vercel Edge 1.5% 3,180 2.3s
CloudFront 26.8% 56,531 2.2s
Akamai 3.9% 8,164 2.2s
Imperva/Incapsula 0.2% 523 2.3s
unpkg 2.9% 6,211 2.4s
Netlify Edge 0.6% 1,165 2.5s
Sucuri 0.1% 211 2.7s
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good LCP (2.5s at p75) · one value per site
85% of Google Cloud CDN sites pass LCP. Sucuri trails 15 points behind, leaving 30% of its sites failing. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices 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 43.4%
822.2s
95116ms
860.05
761.8s
591.2s
Fastly 42.7%
822.2s
94118ms
860.05
771.7s
611.1s
CloudFront 26.8%
812.2s
94122ms
840.05
771.7s
611.1s
Google Cloud CDN 16.3%
852.1s
94123ms
880.04
831.5s
73843ms
Bunny CDN 9.1%
822.2s
96113ms
860.05
771.7s
591.2s
cdnjs 9%
822.2s
96112ms
850.05
761.8s
601.2s
jsDelivr 6.9%
842.1s
95115ms
860.04
781.7s
621.1s
Akamai 3.9%
812.2s
95118ms
850.05
771.7s
571.2s
unpkg 2.9%
762.4s
93122ms
840.06
702.0s
531.4s
Vercel Edge 1.5%
812.3s
91143ms
850.05
791.7s
80700ms
KeyCDN 0.6%
852.1s
95127ms
860.05
821.6s
70953ms
Netlify Edge 0.6%
762.5s
84160ms
760.10
741.8s
541.1s
Azure CDN 0.4%
832.2s
90147ms
830.07
771.7s
631.0s
Imperva/Incapsula 0.2%
792.3s
92125ms
790.10
731.9s
68979ms
Sucuri 0.1%
702.7s
98104ms
800.08
622.3s
401.7s
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.
Google Cloud CDN leads on LCP: 85% of its sites pass. Sucuri trails at 70%. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
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Related signals Marketing pixels (10) → Bot detection (8) → Forms (4) → Personalization (6) → 210,902 crawled sites with Chrome field data, representing millions of real page loads · How we measured
210,902 crawled sites with Chrome field data, representing millions of real page loads. How we measured.