1
At a glance the headline numbers for Image CDNs impact
Performance impact by image_cdn provider.
4
Providers ranked
After min-sites filter
7,599
Sites in sample
Combined across all items
105ms
Best INP (p75)
Akamai Image Manager
The State of Web Vitals · October 2026 · WordPress sites (63,295) · all devices 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 | 105ms | 98.5% | 2,234 | |
| 2 | Imgix | 106ms | 98.7% | 92 | |
| 3 | Bunny Image Optimizer | 107ms | 98.0% | 5,212 | |
| 4 | Fastly Image Optimizer | 117ms | 93.5% | 61 |
The State of Web Vitals · October 2026 · WordPress sites (63,295) · all devices field datacorewebvitals.io/state-of-cwv
3
Passing INP per provider which group passes the INP most often
ProviderSitesPassing INPp75
Thumbor 0% 11 113ms
ImageKit 0% 8 145ms
Sirv 0% 6 121ms
imgix 0.1% 92 106ms
Akamai Image Manager 3.5% 2,234 105ms
Bunny Image Optimizer 8.2% 5,212 107ms
Cloudinary 0.1% 42 116ms
Fastly Image Optimizer 0.1% 61 117ms
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 98% and 99%. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · 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 8.2%
682.8s
98107ms
870.05
582.3s
311.9s
Akamai Image Manager 3.5%
702.7s
99105ms
870.04
602.2s
321.8s
imgix 0.1%
692.9s
99106ms
900.03
552.5s
301.9s
Fastly Image Optimizer 0.1%
662.7s
94117ms
820.05
572.5s
291.9s
Cloudinary 0.1%
553.2s
97116ms
810.04
562.3s
312.2s
Thumbor 0%
442.9s
100113ms
670.17
442.5s
221.9s
ImageKit 0%
752.4s
100145ms
880.02
632.0s
141.5s
Sirv 0%
832.5s
100121ms
830.02
672.3s
171.6s
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.
Akamai Image Manager leads on INP: 99% of its sites pass. Bunny Image Optimizer trails at 98%. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · all devices field datacorewebvitals.io/state-of-cwv
Related signals Search (6) → Font services (4) → Personalization (6) → CDN (16) → 203,892 crawled sites with Chrome field data, representing millions of real page loads · How we measured
203,892 crawled sites with Chrome field data, representing millions of real page loads. How we measured.