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
123ms
Best INP (p75)
Sirv
The State of Web Vitals · October 2026 · 210,902 crawled sites · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by INP at p75, fastest first
| # | Provider | INP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Sirv | 123ms | 95.2% | 65 | |
| 2 | Bunny Image Optimizer | 133ms | 92.9% | 19,121 | |
| 3 | Akamai Image Manager | 137ms | 92.2% | 8,026 | |
| 4 | Fastly Image Optimizer | 137ms | 89.9% | 1,282 | |
| 5 | Thumbor | 155ms | 87.2% | 219 | |
| 6 | ImageKit | 160ms | 81.1% | 88 | |
| 7 | Imgix | 161ms | 86.2% | 866 | |
| 8 | Uploadcare | 183ms | 84.5% | 102 | |
| 9 | Cloudinary | 216ms | 71.6% | 577 |
The State of Web Vitals · October 2026 · 210,902 crawled sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing INP per provider which group passes the INP most often
ProviderSitesPassing INPp75
Sirv 0% 65 123ms
Bunny Image Optimizer 9.1% 19,121 133ms
Akamai Image Manager 3.8% 8,026 137ms
Fastly Image Optimizer 0.6% 1,282 137ms
Thumbor 0.1% 219 155ms
imgix 0.4% 866 161ms
Uploadcare 0% 102 183ms
ImageKit 0% 88 160ms
Cloudinary 0.3% 577 216ms
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good INP (200ms at p75) · one value per site
93% of Bunny Image Optimizer sites pass INP. Cloudinary trails 21 points behind, leaving 28% of its sites failing. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · phone 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%
812.2s
93133ms
880.03
751.8s
591.2s
Akamai Image Manager 3.8%
792.3s
92137ms
870.03
741.8s
551.2s
Fastly Image Optimizer 0.6%
851.9s
90137ms
870.02
871.4s
77780ms
imgix 0.4%
842.1s
86161ms
850.05
841.5s
74830ms
Cloudinary 0.3%
772.4s
72216ms
700.16
741.8s
551.1s
Thumbor 0.1%
822.3s
87155ms
720.11
781.7s
72872ms
Uploadcare 0%
892.1s
85183ms
840.08
841.5s
82714ms
ImageKit 0%
672.7s
81160ms
870.03
612.1s
551.3s
Sirv 0%
822.4s
95123ms
880.02
652.1s
511.3s
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: 93% of its sites pass. Cloudinary trails at 72%. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · phone 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.