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
431ms
Best TTFB (p75)
Vercel
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by TTFB at p75, fastest first
| # | Provider | TTFB p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Vercel | 431ms | 89.8% | 981 | |
| 2 | Netlify | 713ms | 84.3% | 343 | |
| 3 | Cloudflare | 973ms | 68.1% | 23,815 | |
| 4 | Akamai | 1.0s | 65.2% | 4,958 | |
| 5 | CloudFront | 1.1s | 64.3% | 6,145 | |
| 6 | Fastly | 1.1s | 62.2% | 6,447 | |
| 7 | Origin | 1.1s | 61.5% | 142,788 |
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing TTFB per CDN which group passes the TTFB most often
CDNSitesPassing TTFBp75
Vercel 0.5% 981 431ms
Netlify 0.2% 343 713ms
Cloudflare 12.5% 23,815 973ms
Akamai 2.6% 4,958 1.0s
Cloudfront 3.2% 6,145 1.1s
Fastly 3.4% 6,447 1.1s
Origin 75.1% 142,788 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
90% of Vercel sites pass TTFB. Origin trails 29 points behind, leaving 39% of its sites failing. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · 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
Akamai 2.6%
891.9s
9963ms
800.08
851.4s
651.0s
Cloudflare 12.5%
881.9s
9971ms
800.08
841.4s
68973ms
Netlify 0.2%
782.4s
90104ms
780.08
871.4s
84713ms
Origin 75.1%
862.0s
9963ms
780.09
811.6s
611.1s
Fastly 3.4%
871.9s
9864ms
790.09
861.4s
621.1s
Cloudfront 3.2%
842.1s
9782ms
720.12
811.6s
641.1s
Vercel 0.5%
901.9s
9890ms
800.08
901.3s
90431ms
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: 90% of its sites pass. Origin trails at 61%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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.