Image CDNs impact

Performance impact by image_cdn provider.

Field data PhoneDesktopAll Scope All sites Q2 2026 edition · Desktop field outcomes
Metric LCP INP CLS
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 99% 86ms
Bunny Image Optimizer 9% 17,162 99% 70ms
Akamai Image Manager 3.8% 7,236 99% 69ms
imgix 0.4% 805 97% 82ms
ImageKit 0% 79 97% 93ms
Cloudinary 0.3% 512 97% 94ms
Uploadcare 0% 92 97% 95ms
Sirv 0% 57 96% 80ms
Thumbor 0.1% 188 95% 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