The State of Web Vitals

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
27,247
Sites in sample
Combined across all items
1.9s
Best LCP (p75)
Imgix
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by LCP at p75, fastest first

# Provider LCP p75 Passing Sites
1 Imgix 1.9s 92.3%
805
2 Akamai Image Manager 2.0s 86.9%
7,230
3 Uploadcare 2.0s 92.9%
92
4 Bunny Image Optimizer 2.0s 85.5%
17,146
5 Fastly Image Optimizer 2.1s 82.3%
1,139
6 Thumbor 2.2s 82.4%
188
7 Cloudinary 2.4s 79.6%
512
8 Sirv 2.4s 80.0%
57
9 ImageKit 2.8s 69.2%
78
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
3

Passing LCP per provider which group passes the LCP most often

ProviderSitesPassing LCPp75
Uploadcare 0% 92 93% 2.0s
imgix 0.4% 805 92% 1.9s
Akamai Image Manager 3.8% 7,230 87% 2.0s
Bunny Image Optimizer 9% 17,146 86% 2.0s
Thumbor 0.1% 188 82% 2.2s
Fastly Image Optimizer 0.6% 1,139 82% 2.1s
Sirv 0% 57 80% 2.4s
Cloudinary 0.3% 512 80% 2.4s
ImageKit 0% 78 69% 2.8s
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

92% of imgix sites pass LCP. Cloudinary trails 12 points behind. 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
Bunny Image Optimizer 9%
862.0s
9970ms
760.10
811.6s
621.1s
Akamai Image Manager 3.8%
872.0s
9969ms
780.09
841.5s
621.1s
Fastly Image Optimizer 0.6%
822.1s
9986ms
710.12
801.6s
631.2s
imgix 0.4%
921.9s
9782ms
790.08
901.3s
77747ms
Cloudinary 0.3%
802.4s
9794ms
740.11
791.7s
631.1s
Thumbor 0.1%
822.2s
9581ms
630.17
841.5s
70860ms
Uploadcare 0%
932.0s
9795ms
840.08
931.3s
84581ms
ImageKit 0%
692.8s
9791ms
800.07
731.8s
541.2s
Sirv 0%
802.4s
9681ms
400.26
702.0s
361.4s
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.

imgix leads on LCP: 92% of its sites pass. Cloudinary trails at 80%. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals Search (5) → Font services (4) → Personalization (5) → CDN (15) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured