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
69ms
Best INP (p75)
Akamai Image Manager
The State of Web Vitals · Q2 2026 · 189,915 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% | 7,236 | |
| 2 | Bunny Image Optimizer | 70ms | 98.9% | 17,162 | |
| 3 | Sirv | 80ms | 96.4% | 57 | |
| 4 | Imgix | 82ms | 97.3% | 805 | |
| 5 | Thumbor | 82ms | 94.9% | 188 | |
| 6 | Fastly Image Optimizer | 86ms | 99.2% | 1,142 | |
| 7 | ImageKit | 93ms | 97.1% | 79 | |
| 8 | Cloudinary | 94ms | 97.1% | 512 | |
| 9 | Uploadcare | 95ms | 97.1% | 92 |
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing INP per provider which group passes the INP most often
ProviderSitesPassing INPp75
Fastly Image Optimizer 0.6% 1,142 86ms
Bunny Image Optimizer 9% 17,162 70ms
Akamai Image Manager 3.8% 7,236 69ms
imgix 0.4% 805 82ms
ImageKit 0% 79 93ms
Cloudinary 0.3% 512 94ms
Uploadcare 0% 92 95ms
Sirv 0% 57 80ms
Thumbor 0.1% 188 82ms
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 95% and 99%. computed
The State of Web Vitals · Q2 2026 · 189,915 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
ImageKit 0%
702.8s
9793ms
800.07
731.8s
541.3s
Sirv 0%
802.4s
9680ms
400.26
702.0s
361.4s
Akamai Image Manager 3.8%
872.0s
9969ms
780.09
841.5s
621.1s
Bunny Image Optimizer 9%
862.0s
9970ms
760.10
811.6s
621.1s
imgix 0.4%
921.9s
9782ms
790.08
901.3s
77748ms
Thumbor 0.1%
822.2s
9582ms
630.17
841.5s
70860ms
Fastly Image Optimizer 0.6%
822.1s
9986ms
710.12
801.5s
631.2s
Uploadcare 0%
932.0s
9795ms
840.08
931.3s
84587ms
Cloudinary 0.3%
802.4s
9794ms
740.11
791.7s
631.1s
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.
Akamai Image Manager leads on INP: 99% of its sites pass. Thumbor trails at 95%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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.