1
At a glance the headline numbers for Image CDNs impact
Performance impact by image_cdn provider.
9
Providers ranked
After min-sites filter
31,058
Sites in sample
Combined across all items
1.9s
Best LCP (p75)
Imgix
The State of Web Vitals · November 2026 · 215,609 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by LCP at p75, fastest first
| # | Provider | LCP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Imgix | 1.9s | 91.4% | 878 | |
| 2 | Akamai Image Manager | 2.0s | 86.8% | 8,198 | |
| 3 | Uploadcare | 2.0s | 93.6% | 103 | |
| 4 | Bunny Image Optimizer | 2.0s | 85.6% | 19,599 | |
| 5 | Fastly Image Optimizer | 2.1s | 81.8% | 1,319 | |
| 6 | Thumbor | 2.2s | 82.6% | 223 | |
| 7 | Cloudinary | 2.2s | 81.5% | 582 | |
| 8 | Sirv | 2.4s | 80.6% | 67 | |
| 9 | ImageKit | 2.8s | 69.6% | 89 |
The State of Web Vitals · November 2026 · 215,609 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing LCP per provider which group passes the LCP most often
ProviderSitesPassing LCPp75
Uploadcare 0% 103 2.0s
imgix 0.4% 878 1.9s
Akamai Image Manager 3.8% 8,198 2.0s
Bunny Image Optimizer 9.1% 19,599 2.0s
Thumbor 0.1% 223 2.2s
Fastly Image Optimizer 0.6% 1,319 2.1s
Cloudinary 0.3% 582 2.2s
Sirv 0% 67 2.4s
ImageKit 0% 89 2.8s
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
94% of Uploadcare sites pass LCP. Cloudinary trails 12 points behind. computed
The State of Web Vitals · November 2026 · 215,609 crawled sites · desktop 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 9.1%
862.0s
9970ms
760.10
811.6s
621.1s
Akamai Image Manager 3.8%
872.0s
9969ms
780.09
831.5s
621.1s
Fastly Image Optimizer 0.6%
822.1s
9986ms
720.12
801.5s
631.2s
imgix 0.4%
911.9s
9782ms
790.09
891.3s
76762ms
Cloudinary 0.3%
822.2s
9891ms
750.11
801.6s
631.1s
Thumbor 0.1%
832.2s
9686ms
630.18
841.6s
71859ms
Uploadcare 0%
942.0s
9895ms
840.08
941.2s
86576ms
ImageKit 0%
702.8s
9885ms
770.08
701.8s
561.3s
Sirv 0%
812.4s
9780ms
420.25
712.0s
381.4s
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.
Uploadcare leads on LCP: 94% of its sites pass. Cloudinary trails at 82%. computed
The State of Web Vitals · November 2026 · 215,609 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals Search (6) → Font services (4) → Personalization (6) → CDN (16) → 215,609 crawled sites with Chrome field data, representing millions of real page loads · How we measured
215,609 crawled sites with Chrome field data, representing millions of real page loads. How we measured.