1
At a glance the headline numbers for Image CDNs impact
Performance impact by image_cdn provider.
9
Providers ranked
After min-sites filter
30,346
Sites in sample
Combined across all items
69ms
Best INP (p75)
Akamai Image Manager
The State of Web Vitals · October 2026 · 210,902 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by INP at p75, fastest first
| # | Provider | INP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Akamai Image Manager | 69ms | 98.8% | 8,026 | |
| 2 | Bunny Image Optimizer | 70ms | 98.9% | 19,121 | |
| 3 | Sirv | 80ms | 96.6% | 65 | |
| 4 | Imgix | 82ms | 97.2% | 866 | |
| 5 | ImageKit | 85ms | 97.6% | 88 | |
| 6 | Fastly Image Optimizer | 86ms | 98.9% | 1,282 | |
| 7 | Thumbor | 86ms | 95.6% | 219 | |
| 8 | Cloudinary | 92ms | 97.5% | 577 | |
| 9 | Uploadcare | 96ms | 97.4% | 102 |
The State of Web Vitals · October 2026 · 210,902 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing INP per provider which group passes the INP most often
ProviderSitesPassing INPp75
Bunny Image Optimizer 9.1% 19,121 70ms
Fastly Image Optimizer 0.6% 1,282 86ms
Akamai Image Manager 3.8% 8,026 69ms
ImageKit 0% 88 85ms
Cloudinary 0.3% 577 92ms
Uploadcare 0% 102 96ms
imgix 0.4% 866 82ms
Sirv 0% 65 80ms
Thumbor 0.1% 219 86ms
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good INP (200ms at p75) · one value per site
No provider stands out: pass rates sit between 96% and 99%. computed
The State of Web Vitals · October 2026 · 210,902 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
730.12
801.5s
631.2s
imgix 0.4%
921.9s
9782ms
790.09
891.3s
76761ms
Cloudinary 0.3%
812.2s
9892ms
750.10
801.6s
631.1s
Thumbor 0.1%
822.2s
9686ms
630.17
841.6s
71860ms
Uploadcare 0%
942.0s
9796ms
850.07
941.2s
86581ms
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.
Bunny Image Optimizer leads on INP: 99% of its sites pass. Thumbor trails at 96%. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals Search (6) → Font services (4) → Personalization (6) → CDN (16) → 210,902 crawled sites with Chrome field data, representing millions of real page loads · How we measured
210,902 crawled sites with Chrome field data, representing millions of real page loads. How we measured.