1
At a glance the headline numbers for Image CDNs impact
Performance impact by image_cdn provider.
4
Providers ranked
After min-sites filter
2,207
Sites in sample
Combined across all items
0.02
Best CLS (p75)
Imgix
The State of Web Vitals · October 2026 · Shopify sites (8,248) · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Imgix | 0.02 | 95.3% | 312 | |
| 2 | Uploadcare | 0.03 | 93.9% | 64 | |
| 3 | Bunny Image Optimizer | 0.03 | 91.6% | 1,569 | |
| 4 | Akamai Image Manager | 0.03 | 90.1% | 262 |
The State of Web Vitals · October 2026 · Shopify sites (8,248) · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Thumbor 0.1% 7 0.08
imgix 3.8% 312 0.02
Uploadcare 0.8% 64 0.03
Bunny Image Optimizer 19% 1,569 0.03
Akamai Image Manager 3.2% 262 0.03
Cloudinary 0.1% 11 0.02
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
95% of imgix sites pass CLS. Akamai Image Manager trails 5 points behind. computed
The State of Web Vitals · October 2026 · Shopify sites (8,248) · 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
Bunny Image Optimizer 19%
941.8s
90153ms
920.03
951.3s
96533ms
imgix 3.8%
971.8s
91150ms
950.02
961.2s
97543ms
Akamai Image Manager 3.2%
921.8s
88164ms
900.03
931.3s
97515ms
Uploadcare 0.8%
902.1s
88174ms
940.03
921.4s
92577ms
Cloudinary 0.1%
1001.7s
86176ms
880.02
1001.4s
88513ms
Thumbor 0.1%
832.4s
100171ms
1000.08
831.6s
80627ms
60%95%+ passing Cell: pass rate, small number = p75 · faded rows: under 100 sites
One row per provider, 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.
imgix leads on CLS: 95% of its sites pass. Akamai Image Manager trails at 90%. computed
The State of Web Vitals · October 2026 · Shopify sites (8,248) · phone field datacorewebvitals.io/state-of-cwv
Related signals Search (6) → Font services (4) → Personalization (6) → CDN (16) → 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.