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
2.1s
Best LCP (p75)
Imgix
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by LCP at p75, fastest first
| # | Provider | LCP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Imgix | 2.1s | 83.3% | 92 | |
| 2 | Akamai Image Manager | 2.4s | 76.9% | 2,234 | |
| 3 | Fastly Image Optimizer | 2.5s | 73.1% | 61 | |
| 4 | Bunny Image Optimizer | 2.6s | 72.7% | 5,212 |
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop field datacorewebvitals.io/state-of-cwv
3
Passing LCP per provider which group passes the LCP most often
ProviderSitesPassing LCPp75
imgix 0.1% 92 2.1s
Thumbor 0% 11 2.0s
Akamai Image Manager 3.5% 2,234 2.4s
Fastly Image Optimizer 0.1% 61 2.5s
Bunny Image Optimizer 8.2% 5,212 2.6s
ImageKit 0% 8 2.7s
Cloudinary 0.1% 42 2.6s
Sirv 0% 6 2.9s
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good LCP (2.5s at p75) · one value per site
No provider stands out: pass rates sit between 73% and 77%. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · 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
Bunny Image Optimizer 8.2%
732.6s
9965ms
750.10
642.2s
331.8s
Akamai Image Manager 3.5%
772.4s
10062ms
810.08
691.9s
361.7s
imgix 0.1%
832.1s
10064ms
730.12
681.9s
441.5s
Fastly Image Optimizer 0.1%
732.5s
9581ms
750.10
572.2s
261.7s
Cloudinary 0.1%
632.6s
10063ms
850.10
652.0s
331.6s
Thumbor 0%
802.0s
10049ms
1000.03
601.8s
501.4s
ImageKit 0%
672.7s
10085ms
750.09
502.0s
01.6s
Sirv 0%
502.9s
10056ms
750.16
502.5s
252.0s
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 LCP: 77% of its sites pass. Bunny Image Optimizer trails at 73%. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop 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.