The State of Web Vitals

Session recording impact

Session-recording tools ranked by performance impact.

Field data PhoneDesktopAll Scope All sites Q2 2026 edition · Phone field outcomes
Metric LCP INP CLS
1

At a glance the headline numbers for Session recording impact

Session-recording tools ranked by performance impact.

9
Providers ranked
After min-sites filter
14,812
Sites in sample
Combined across all items
0.03
Best CLS (p75)
Smartlook
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by CLS at p75, fastest first

# Provider CLS p75 Passing Sites
1 Smartlook 0.03 90.3%
162
2 Lucky Orange 0.04 79.6%
78
3 Mouseflow 0.04 86.7%
304
4 Crazy Egg 0.04 82.8%
185
5 Hotjar 0.04 85.5%
4,462
6 Microsoft Clarity 0.04 85.1%
8,476
7 PostHog Replay 0.06 87.4%
283
8 Contentsquare 0.08 79.9%
591
9 FullStory 0.09 76.3%
271
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
3

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75
Smartlook 0.1% 162 90% 0.03
PostHog Replay 0.1% 283 87% 0.06
Mouseflow 0.2% 304 87% 0.04
Hotjar 2.3% 4,462 86% 0.04
Microsoft Clarity 4.5% 8,476 85% 0.04
Crazy Egg 0.1% 185 83% 0.04
Contentsquare 0.3% 591 80% 0.08
Lucky Orange 0% 78 80% 0.04
FullStory 0.1% 271 76% 0.09
Inspectlet 0% 39 76% 0.04
LogRocket 0% 28 61% 0.41
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

90% of Smartlook sites pass CLS. FullStory trails 14 points behind. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone 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
Microsoft Clarity 4.5%
782.4s
88162ms
850.04
721.9s
541.2s
Hotjar 2.3%
762.4s
89156ms
860.04
692.0s
511.3s
Contentsquare 0.3%
702.7s
75201ms
800.08
682.0s
581.2s
Mouseflow 0.2%
752.5s
87162ms
870.04
741.8s
591.2s
PostHog Replay 0.1%
772.5s
82174ms
870.06
672.0s
421.3s
FullStory 0.1%
663.0s
81171ms
760.09
741.9s
551.1s
Crazy Egg 0.1%
712.6s
86167ms
830.04
682.0s
481.3s
Smartlook 0.1%
792.4s
85159ms
900.03
642.3s
471.3s
Lucky Orange 0%
802.3s
91137ms
800.04
801.6s
78704ms
Inspectlet 0%
882.2s
96136ms
760.04
681.9s
381.3s
LogRocket 0%
593.1s
75196ms
610.41
502.0s
671.0s
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.

Smartlook leads on CLS: 90% of its sites pass. FullStory trails at 76%. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
Related signals Search (5) → JS libraries (23) → Scheduling (3) → Push notifications (5) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured