1
At a glance the headline numbers for RUM impact
Performance impact by rum provider.
10
Providers ranked
After min-sites filter
18,042
Sites in sample
Combined across all items
0.04
Best CLS (p75)
Vercel Analytics
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Vercel Analytics | 0.04 | 87.9% | 760 | |
| 2 | Sentry | 0.04 | 87.1% | 10,720 | |
| 3 | Cloudflare Web Analytics | 0.08 | 79.5% | 3,072 | |
| 4 | SpeedCurve LUX | 0.09 | 79.2% | 56 | |
| 5 | Akamai mPulse | 0.09 | 80.4% | 281 | |
| 6 | New Relic Browser | 0.09 | 77.6% | 993 | |
| 7 | Netlify Analytics | 0.10 | 75.9% | 1,024 | |
| 8 | Elastic RUM | 0.21 | 58.9% | 79 | |
| 9 | Datadog RUM | 0.39 | 43.7% | 708 | |
| 10 | Dynatrace | 0.47 | 40.7% | 349 |
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Request metrics 0% 3 0.09
Vercel Analytics 0.4% 760 0.04
Sentry 5.6% 10,720 0.04
DebugBear 0% 16 0.08
Akamai mPulse 0.1% 281 0.09
Cloudflare Web Analytics 1.6% 3,072 0.08
SpeedCurve LUX 0% 56 0.09
New Relic Browser 0.5% 993 0.09
Netlify Analytics 0.5% 1,024 0.10
AppDynamics 0% 21 0.13
Elastic RUM 0% 79 0.21
Raygun 0% 12 0.25
Datadog RUM 0.4% 708 0.39
Dynatrace 0.2% 349 0.47
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good CLS (0.1 at p75) · one value per site
88% of Vercel Analytics sites pass CLS. Dynatrace trails 47 points behind, leaving 59% of its sites failing. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · 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
Dynatrace 0.2%
702.6s
85181ms
410.47
841.6s
75793ms
Datadog RUM 0.4%
424.8s
56285ms
440.39
523.1s
66956ms
Netlify Analytics 0.5%
762.5s
85160ms
760.10
751.8s
551.1s
Akamai mPulse 0.1%
633.0s
83170ms
800.09
622.1s
481.0s
AppDynamics 0%
602.8s
89180ms
650.13
652.1s
551.0s
SpeedCurve LUX 0%
921.7s
79188ms
790.09
921.3s
77790ms
Request metrics 0%
1002.2s
10082ms
1000.09
1001.5s
100787ms
DebugBear 0%
752.3s
80180ms
810.08
632.1s
561.1s
Sentry 5.6%
872.0s
91123ms
870.04
861.4s
77769ms
Cloudflare Web Analytics 1.6%
812.2s
87144ms
800.08
761.8s
571.2s
Vercel Analytics 0.4%
872.0s
93130ms
880.04
831.5s
79722ms
New Relic Browser 0.5%
782.4s
92136ms
780.09
711.9s
541.2s
Elastic RUM 0%
572.8s
81185ms
590.21
711.9s
67949ms
Raygun 0%
672.6s
100171ms
580.25
751.6s
83662ms
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.
Vercel Analytics leads on CLS: 88% of its sites pass. Dynatrace trails at 41%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
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