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
111ms
Best INP (p75)
Sirv
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by INP at p75, fastest first
| # | Provider | INP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Sirv | 111ms | 96.2% | 65 | |
| 2 | Bunny Image Optimizer | 113ms | 95.6% | 19,121 | |
| 3 | Akamai Image Manager | 117ms | 95.3% | 8,026 | |
| 4 | Fastly Image Optimizer | 117ms | 92.9% | 1,282 | |
| 5 | Thumbor | 137ms | 93.8% | 219 | |
| 6 | Imgix | 137ms | 90.6% | 866 | |
| 7 | ImageKit | 146ms | 84.7% | 88 | |
| 8 | Uploadcare | 160ms | 89.5% | 102 | |
| 9 | Cloudinary | 180ms | 77.3% | 577 |
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing INP per provider which group passes the INP most often
ProviderSitesPassing INPp75
Sirv 0% 65 111ms
Bunny Image Optimizer 9.1% 19,121 113ms
Akamai Image Manager 3.8% 8,026 117ms
Thumbor 0.1% 219 137ms
Fastly Image Optimizer 0.6% 1,282 117ms
imgix 0.4% 866 137ms
Uploadcare 0% 102 160ms
ImageKit 0% 88 146ms
Cloudinary 0.3% 577 180ms
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good INP (200ms at p75) · one value per site
96% of Bunny Image Optimizer sites pass INP. Cloudinary trails 19 points behind. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · 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 9.1%
822.2s
96113ms
860.05
771.7s
591.2s
Akamai Image Manager 3.8%
812.2s
95117ms
850.05
771.7s
561.2s
Fastly Image Optimizer 0.6%
881.7s
93117ms
880.02
901.2s
80727ms
imgix 0.4%
862.1s
91137ms
860.05
851.5s
74848ms
Cloudinary 0.3%
802.3s
77180ms
720.13
771.7s
591.1s
Thumbor 0.1%
842.2s
94137ms
610.20
821.6s
68934ms
Uploadcare 0%
902.0s
90160ms
870.06
881.4s
84668ms
ImageKit 0%
672.8s
85146ms
800.06
662.0s
521.2s
Sirv 0%
772.5s
96111ms
830.05
672.2s
471.5s
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: 96% of its sites pass. Cloudinary trails at 77%. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices 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.