1
At a glance the headline numbers for Image CDNs impact
Performance impact by image_cdn provider.
7
Providers ranked
After min-sites filter
14,356
Sites in sample
Combined across all items
68ms
Best INP (p75)
Akamai Image Manager
The State of Web Vitals · Q1 2026 · 94,910 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 | 68ms | 99.0% | 3,876 | |
| 2 | Bunny Image Optimizer | 69ms | 98.8% | 9,022 | |
| 3 | Thumbor | 78ms | 93.0% | 96 | |
| 4 | Imgix | 79ms | 97.3% | 432 | |
| 5 | Fastly Image Optimizer | 85ms | 100.0% | 596 | |
| 6 | Cloudinary | 94ms | 98.0% | 280 | |
| 7 | Uploadcare | 95ms | 100.0% | 54 |
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing INP per provider which group passes the INP most often
ProviderSitesPassing INPp75
Uploadcare 0.1% 54 95ms
Fastly Image Optimizer 0.6% 596 85ms
Akamai Image Manager 4.1% 3,876 68ms
Bunny Image Optimizer 9.5% 9,022 69ms
Cloudinary 0.3% 280 94ms
imgix 0.5% 432 79ms
ImageKit 0% 40 99ms
Thumbor 0.1% 96 78ms
Sirv 0% 30 83ms
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 97% and 100%. computed
The State of Web Vitals · Q1 2026 · 94,910 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 9.5%
862.0s
9969ms
770.10
821.5s
621.1s
Akamai Image Manager 4.1%
872.0s
9968ms
780.09
831.5s
621.1s
Fastly Image Optimizer 0.6%
842.1s
10085ms
730.11
781.7s
591.3s
imgix 0.5%
931.8s
9779ms
800.07
891.3s
79709ms
Cloudinary 0.3%
772.4s
9894ms
700.13
771.7s
631.1s
Thumbor 0.1%
832.0s
9378ms
620.19
851.3s
79705ms
Uploadcare 0.1%
912.3s
10095ms
750.10
921.4s
71858ms
ImageKit 0%
552.9s
9499ms
760.07
671.9s
471.3s
Sirv 0%
772.4s
9183ms
310.24
692.1s
331.6s
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.
Fastly Image Optimizer leads on INP: 100% of its sites pass. imgix trails at 97%. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals Search (4) → Font services (4) → Personalization (5) → CDN (15) → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured
Chrome field data from 94,910 sites, representing millions of real page loads. How we measured.