1
At a glance the headline numbers for Image CDNs impact
Performance impact by image_cdn provider.
9
Providers ranked
After min-sites filter
27,273
Sites in sample
Combined across all items
111ms
Best INP (p75)
Sirv
The State of Web Vitals · Q2 2026 · 189,915 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 | 95.7% | 57 | |
| 2 | Bunny Image Optimizer | 113ms | 95.7% | 17,162 | |
| 3 | Akamai Image Manager | 116ms | 95.5% | 7,236 | |
| 4 | Fastly Image Optimizer | 118ms | 92.8% | 1,142 | |
| 5 | Thumbor | 133ms | 94.7% | 188 | |
| 6 | Imgix | 136ms | 91.1% | 805 | |
| 7 | ImageKit | 148ms | 84.1% | 79 | |
| 8 | Uploadcare | 154ms | 88.1% | 92 | |
| 9 | Cloudinary | 183ms | 76.4% | 512 |
The State of Web Vitals · Q2 2026 · 189,915 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% 57 111ms
Bunny Image Optimizer 9% 17,162 113ms
Akamai Image Manager 3.8% 7,236 116ms
Thumbor 0.1% 188 133ms
Fastly Image Optimizer 0.6% 1,142 118ms
imgix 0.4% 805 136ms
Uploadcare 0% 92 154ms
ImageKit 0% 79 148ms
Cloudinary 0.3% 512 183ms
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 20 points behind. computed
The State of Web Vitals · Q2 2026 · 189,915 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
ImageKit 0%
673.1s
84148ms
800.05
682.0s
501.2s
Sirv 0%
762.5s
96111ms
800.09
652.2s
431.5s
Akamai Image Manager 3.8%
812.2s
95116ms
850.05
771.7s
571.2s
Bunny Image Optimizer 9%
822.2s
96113ms
860.05
761.7s
591.2s
imgix 0.4%
862.0s
91136ms
870.05
851.5s
75821ms
Thumbor 0.1%
842.2s
95133ms
600.21
841.6s
65960ms
Fastly Image Optimizer 0.6%
881.7s
93118ms
870.02
911.2s
81720ms
Uploadcare 0%
882.0s
88154ms
860.06
871.4s
82701ms
Cloudinary 0.3%
792.4s
76183ms
710.14
761.8s
591.1s
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 76%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals Search (6) → Font services (4) → Personalization (6) → CDN (16) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured
Chrome field data from 189,915 sites, representing millions of real page loads. How we measured.