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
0.01
Best CLS (p75)
Fastly
The State of Web Vitals · Q1 2026 · 94,910 sites · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Item | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Fastly | 0.01 | 88.7% | 3,357 | |
| 2 | No CDN (origin) | 0.01 | 89.6% | 72,501 | |
| 3 | Akamai | 0.02 | 88.2% | 2,663 | |
| 4 | Cloudflare | 0.02 | 88.5% | 12,431 | |
| 5 | Vercel | 0.04 | 84.1% | 538 | |
| 6 | CloudFront | 0.08 | 79.0% | 3,241 | |
| 7 | Netlify | 0.21 | 67.2% | 175 |
The State of Web Vitals · Q1 2026 · 94,910 sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per item which group passes the CLS most often
ItemSitesPassing CLSp75
No CDN (origin) 76.4% 72,501 0.01
Fastly 3.5% 3,357 0.01
Cloudflare 13.1% 12,431 0.02
Akamai 2.8% 2,663 0.02
Vercel 0.6% 538 0.04
CloudFront 3.4% 3,241 0.08
Netlify 0.2% 175 0.21
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
90% of No CDN (origin) sites pass CLS. Netlify trails 23 points behind, leaving 33% of its sites failing. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · phone 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%
812.2s
92125ms
900.01
751.8s
571.2s
Cloudflare 13.1%
862.0s
91137ms
890.02
811.6s
69946ms
Fastly 3.5%
852.0s
91122ms
890.01
811.6s
73854ms
CloudFront 3.4%
792.3s
87156ms
790.08
751.8s
621.1s
Akamai 2.8%
822.2s
95128ms
880.02
771.7s
591.1s
Vercel 0.6%
802.3s
85170ms
840.04
761.8s
88618ms
Netlify 0.2%
702.6s
70232ms
670.21
681.9s
461.1s
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.
No CDN (origin) leads on CLS: 90% of its sites pass. Netlify trails at 67%. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · phone 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.