1
At a glance the headline numbers for CDN performance
Performance breakdown by cdn.
7
Items ranked
After min-sites filter
94,906
Sites in sample
Combined across all items
0.02
Best CLS (p75)
Fastly
The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Item | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Fastly | 0.02 | 88.6% | 3,357 | |
| 2 | No CDN (origin) | 0.03 | 88.3% | 72,501 | |
| 3 | Akamai | 0.04 | 86.5% | 2,663 | |
| 4 | Cloudflare | 0.04 | 88.2% | 12,431 | |
| 5 | Vercel | 0.05 | 83.8% | 538 | |
| 6 | CloudFront | 0.09 | 77.9% | 3,241 | |
| 7 | Netlify | 0.15 | 70.7% | 175 |
The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing CLS per item which group passes the CLS most often
ItemSitesPassing CLSp75
Fastly 3.5% 3,357 0.02
No CDN (origin) 76.4% 72,501 0.03
Cloudflare 13.1% 12,431 0.04
Akamai 2.8% 2,663 0.04
Vercel 0.6% 538 0.05
CloudFront 3.4% 3,241 0.09
Netlify 0.2% 175 0.15
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good CLS (0.1 at p75) · one value per site
89% of Fastly sites pass CLS. Netlify trails 18 points behind, leaving 29% of its sites failing. computed
The State of Web Vitals · Q1 2026 · 94,910 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
No CDN (origin) 76.4%
822.2s
95106ms
880.03
761.8s
561.2s
Cloudflare 13.1%
862.0s
94116ms
880.04
821.5s
69951ms
Fastly 3.5%
862.0s
94103ms
890.02
831.5s
72871ms
CloudFront 3.4%
812.3s
91135ms
780.09
781.7s
631.1s
Akamai 2.8%
832.1s
97109ms
870.04
791.7s
601.1s
Vercel 0.6%
832.2s
90153ms
840.05
791.7s
89578ms
Netlify 0.2%
742.5s
79177ms
710.15
751.8s
471.1s
60%95%+ passing Cell: pass rate, small number = p75 · faded rows: under 100 sites
One row per item, 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.
Fastly leads on CLS: 89% of its sites pass. Netlify trails at 71%. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals CMS (10) → Frameworks (11) → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured
Chrome field data from 94,910 sites, representing millions of real page loads. How we measured.