CDN impact Shopify sites
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.
13
Providers ranked
After min-sites filter
32,979
Sites in sample
Combined across all items
1.6s
Best LCP (p75)
Google Cloud CDN
The State of Web Vitals · October 2026 · Shopify sites (8,248) · desktop field datacorewebvitals.io/state-of-cwv
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The ranking sorted by LCP at p75, fastest first
| # | Provider | LCP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Google Cloud CDN | 1.6s | 96.6% | 8,213 | |
| 2 | Cloudflare | 1.6s | 96.5% | 8,248 | |
| 3 | Akamai | 1.7s | 97.7% | 302 | |
| 4 | Fastly | 1.7s | 96.2% | 5,990 | |
| 5 | CloudFront | 1.7s | 96.0% | 4,753 | |
| 6 | Bunny CDN | 1.7s | 96.8% | 1,569 | |
| 7 | KeyCDN | 1.7s | 95.6% | 466 | |
| 8 | cdnjs | 1.8s | 95.0% | 1,458 | |
| 9 | Netlify Edge | 1.8s | 94.3% | 89 | |
| 10 | jsDelivr | 1.8s | 95.2% | 1,260 | |
| 11 | unpkg | 1.8s | 94.2% | 377 | |
| 12 | Vercel Edge | 1.9s | 94.2% | 129 | |
| 13 | Azure CDN | 1.9s | 94.0% | 125 |
The State of Web Vitals · October 2026 · Shopify sites (8,248) · desktop field datacorewebvitals.io/state-of-cwv
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Passing LCP per CDN which group passes the LCP most often
CDNSitesPassing LCPp75
Sucuri 0.1% 8 1.1s
Imperva/Incapsula 0.1% 7 1.3s
Akamai 3.7% 302 1.7s
Bunny CDN 19% 1,569 1.7s
Google Cloud CDN 99.6% 8,213 1.6s
Cloudflare 100% 8,248 1.6s
Fastly 72.6% 5,990 1.7s
CloudFront 57.6% 4,753 1.7s
KeyCDN 5.6% 466 1.7s
jsDelivr 15.3% 1,260 1.8s
cdnjs 17.7% 1,458 1.8s
Netlify Edge 1.1% 89 1.8s
unpkg 4.6% 377 1.8s
Vercel Edge 1.6% 129 1.9s
Azure CDN 1.5% 125 1.9s
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
No CDN stands out: pass rates sit between 94% and 98%. computed
The State of Web Vitals · October 2026 · Shopify sites (8,248) · desktop field datacorewebvitals.io/state-of-cwv
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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 100%
971.6s
9978ms
860.06
961.0s
97468ms
Google Cloud CDN 99.6%
971.6s
9978ms
860.06
971.0s
97465ms
Fastly 72.6%
961.7s
9981ms
840.06
961.1s
97472ms
CloudFront 57.6%
961.7s
9982ms
840.07
961.1s
96479ms
Bunny CDN 19%
971.7s
9984ms
810.08
961.1s
97486ms
cdnjs 17.7%
951.8s
9983ms
810.08
961.1s
97481ms
jsDelivr 15.3%
951.8s
9987ms
790.08
941.2s
96503ms
KeyCDN 5.6%
961.7s
10088ms
820.08
951.1s
94507ms
unpkg 4.6%
941.8s
10091ms
820.08
971.1s
97480ms
Akamai 3.7%
981.7s
9988ms
830.08
971.1s
96457ms
Vercel Edge 1.6%
941.9s
9792ms
840.06
951.1s
97453ms
Azure CDN 1.5%
941.9s
9995ms
820.07
981.2s
96481ms
Netlify Edge 1.1%
941.8s
10087ms
800.07
921.1s
97368ms
Sucuri 0.1%
1001.1s
10050ms
1000.07
100848ms
100443ms
Imperva/Incapsula 0.1%
1001.3s
10040ms
500.13
100998ms
100522ms
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.
Akamai leads on LCP: 98% of its sites pass. Azure CDN trails at 94%. computed
The State of Web Vitals · October 2026 · Shopify sites (8,248) · desktop field datacorewebvitals.io/state-of-cwv
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Related signals Marketing pixels (10) → Bot detection (8) → Forms (4) → Personalization (6) → 203,892 crawled sites with Chrome field data, representing millions of real page loads · How we measured
203,892 crawled sites with Chrome field data, representing millions of real page loads. How we measured.