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.
7
Providers ranked
After min-sites filter
185,477
Sites in sample
Combined across all items
560ms
Best TTFB (p75)
Vercel
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by TTFB at p75, fastest first
| # | Provider | TTFB p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Vercel | 560ms | 88.3% | 981 | |
| 2 | Fastly | 867ms | 72.4% | 6,447 | |
| 3 | Cloudflare | 950ms | 69.0% | 23,815 | |
| 4 | Netlify | 1.1s | 48.2% | 343 | |
| 5 | CloudFront | 1.1s | 62.1% | 6,145 | |
| 6 | Akamai | 1.1s | 59.5% | 4,958 | |
| 7 | Origin | 1.3s | 55.9% | 142,788 |
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing TTFB per CDN which group passes the TTFB most often
CDNSitesPassing TTFBp75
Vercel 0.5% 981 560ms
Fastly 3.4% 6,447 867ms
Cloudflare 12.5% 23,815 950ms
Cloudfront 3.2% 6,145 1.1s
Akamai 2.6% 4,958 1.1s
Origin 75.1% 142,788 1.3s
Netlify 0.2% 343 1.1s
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good TTFB (800ms at p75) · one value per site
88% of Vercel sites pass TTFB. Netlify trails 40 points behind, leaving 52% of its sites failing. computed
The State of Web Vitals · Q2 2026 · 189,915 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
Akamai 2.6%
832.1s
97110ms
860.04
791.7s
601.1s
Cloudflare 12.5%
862.0s
94117ms
880.04
821.6s
69950ms
Netlify 0.2%
782.4s
75218ms
690.17
761.8s
481.1s
Origin 75.1%
822.2s
95106ms
880.03
751.8s
561.3s
Fastly 3.4%
862.0s
94103ms
880.02
831.5s
72867ms
Cloudfront 3.2%
812.3s
91136ms
780.09
771.7s
621.1s
Vercel 0.5%
822.2s
91150ms
840.05
791.7s
88560ms
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.
Vercel leads on TTFB: 88% of its sites pass. Netlify trails at 48%. computed
The State of Web Vitals · Q2 2026 · 189,915 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) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured
Chrome field data from 189,915 sites, representing millions of real page loads. How we measured.