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
1.1s
Best FCP (p75)
Google Cloud CDN
The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices field datacorewebvitals.io/state-of-cwv
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The ranking sorted by FCP at p75, fastest first
| # | Provider | FCP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Google Cloud CDN | 1.1s | 95.6% | 8,213 | |
| 2 | Cloudflare | 1.1s | 95.4% | 8,248 | |
| 3 | Fastly | 1.2s | 95.0% | 5,990 | |
| 4 | CloudFront | 1.2s | 94.7% | 4,753 | |
| 5 | Azure CDN | 1.2s | 93.5% | 125 | |
| 6 | Bunny CDN | 1.2s | 95.1% | 1,569 | |
| 7 | cdnjs | 1.2s | 94.2% | 1,458 | |
| 8 | Netlify Edge | 1.2s | 94.3% | 89 | |
| 9 | Akamai | 1.2s | 93.5% | 302 | |
| 10 | KeyCDN | 1.2s | 95.6% | 466 | |
| 11 | unpkg | 1.3s | 93.8% | 377 | |
| 12 | jsDelivr | 1.3s | 92.8% | 1,260 | |
| 13 | Vercel Edge | 1.3s | 94.4% | 129 |
The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices field datacorewebvitals.io/state-of-cwv
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Passing FCP per CDN which group passes the FCP most often
CDNSitesPassing FCPp75
Sucuri 0.1% 8 1.0s
Imperva/Incapsula 0.1% 7 1.1s
Google Cloud CDN 99.6% 8,213 1.1s
KeyCDN 5.6% 466 1.2s
Cloudflare 100% 8,248 1.1s
Bunny CDN 19% 1,569 1.2s
Fastly 72.6% 5,990 1.2s
CloudFront 57.6% 4,753 1.2s
Vercel Edge 1.6% 129 1.3s
Netlify Edge 1.1% 89 1.2s
cdnjs 17.7% 1,458 1.2s
unpkg 4.6% 377 1.3s
Akamai 3.7% 302 1.2s
Azure CDN 1.5% 125 1.2s
jsDelivr 15.3% 1,260 1.3s
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good FCP (1.8s at p75) · one value per site
No CDN stands out: pass rates sit between 93% and 96%. computed
The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices 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%
961.7s
96124ms
940.02
951.1s
96513ms
Google Cloud CDN 99.6%
961.7s
96124ms
940.02
961.1s
96512ms
Fastly 72.6%
951.7s
95130ms
930.03
951.2s
96523ms
CloudFront 57.6%
951.8s
95133ms
930.03
951.2s
96530ms
Bunny CDN 19%
951.8s
94135ms
910.03
951.2s
96527ms
cdnjs 17.7%
941.8s
95134ms
910.04
941.2s
96528ms
jsDelivr 15.3%
931.8s
93143ms
910.04
931.3s
95538ms
KeyCDN 5.6%
951.8s
93145ms
930.03
961.2s
94543ms
unpkg 4.6%
931.9s
93146ms
900.04
941.3s
96531ms
Akamai 3.7%
941.8s
89150ms
910.04
941.2s
96515ms
Vercel Edge 1.6%
921.9s
89152ms
930.03
941.3s
97532ms
Azure CDN 1.5%
931.8s
90153ms
920.04
941.2s
95545ms
Netlify Edge 1.1%
931.9s
95131ms
930.03
941.2s
95524ms
Sucuri 0.1%
1001.6s
10093ms
1000.02
1001.0s
100490ms
Imperva/Incapsula 0.1%
1001.4s
10078ms
830.00
1001.1s
100490ms
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.
Google Cloud CDN leads on FCP: 96% of its sites pass. jsDelivr trails at 93%. computed
The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices 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.