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
0.03
Best CLS (p75)
Uploadcare
The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Uploadcare | 0.03 | 96.7% | 64 | |
| 2 | Imgix | 0.03 | 95.5% | 312 | |
| 3 | Bunny Image Optimizer | 0.03 | 91.4% | 1,569 | |
| 4 | Akamai Image Manager | 0.04 | 90.9% | 262 |
The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices 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
Uploadcare 0.8% 64 0.03
imgix 3.8% 312 0.03
Bunny Image Optimizer 19% 1,569 0.03
Akamai Image Manager 3.2% 262 0.04
Cloudinary 0.1% 11 0.04
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
96% of imgix sites pass CLS. Akamai Image Manager trails 5 points behind. computed
The State of Web Vitals · October 2026 · Shopify sites (8,248) · 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
Bunny Image Optimizer 19%
951.8s
94135ms
910.03
951.2s
96527ms
imgix 3.8%
971.7s
95138ms
960.03
971.2s
96526ms
Akamai Image Manager 3.2%
951.8s
91145ms
910.04
951.2s
96512ms
Uploadcare 0.8%
922.0s
92154ms
970.03
941.3s
91559ms
Cloudinary 0.1%
911.9s
80172ms
910.04
1001.4s
82646ms
Thumbor 0.1%
862.4s
100151ms
1000.08
861.5s
83581ms
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: 96% of its sites pass. Akamai Image Manager trails at 91%. computed
The State of Web Vitals · October 2026 · Shopify sites (8,248) · all devices 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.