Session recording impact
Session-recording tools ranked by performance impact.
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
16,635
Sites in sample
Combined across all items
0.03
Best CLS (p75)
Smartlook
The State of Web Vitals · October 2026 · 210,902 crawled 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 | 89.4% | 175 | |
| 2 | Lucky Orange | 0.04 | 80.6% | 91 | |
| 3 | Hotjar | 0.04 | 85.4% | 4,905 | |
| 4 | Crazy Egg | 0.04 | 82.0% | 210 | |
| 5 | Microsoft Clarity | 0.04 | 85.7% | 9,633 | |
| 6 | Mouseflow | 0.04 | 86.9% | 328 | |
| 7 | FullStory | 0.06 | 79.0% | 307 | |
| 8 | PostHog Replay | 0.06 | 87.7% | 313 | |
| 9 | Contentsquare | 0.08 | 79.9% | 673 |
The State of Web Vitals · October 2026 · 210,902 crawled 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% 175 0.03
PostHog Replay 0.1% 313 0.06
Mouseflow 0.2% 328 0.04
Microsoft Clarity 4.6% 9,633 0.04
Hotjar 2.3% 4,905 0.04
Crazy Egg 0.1% 210 0.04
Lucky Orange 0% 91 0.04
Contentsquare 0.3% 673 0.08
FullStory 0.1% 307 0.06
Inspectlet 0% 40 0.04
LogRocket 0% 31 0.42
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
89% of Smartlook sites pass CLS. FullStory trails 10 points behind. computed
The State of Web Vitals · October 2026 · 210,902 crawled 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 4.6%
782.4s
87163ms
860.04
721.9s
541.2s
Hotjar 2.3%
762.4s
88157ms
850.04
692.0s
511.3s
Contentsquare 0.3%
702.7s
73205ms
800.08
692.0s
571.2s
Mouseflow 0.2%
752.5s
87161ms
870.04
731.8s
601.2s
PostHog Replay 0.1%
772.5s
80178ms
880.06
672.0s
431.3s
FullStory 0.1%
712.8s
82166ms
790.06
761.8s
551.1s
Crazy Egg 0.1%
732.5s
87163ms
820.04
702.0s
491.3s
Smartlook 0.1%
782.4s
84161ms
890.03
632.3s
501.2s
Lucky Orange 0%
792.3s
88144ms
810.04
791.6s
78704ms
Inspectlet 0%
882.2s
96136ms
760.04
681.9s
381.3s
LogRocket 0%
553.1s
68225ms
620.42
482.0s
671.1s
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.
Smartlook leads on CLS: 89% of its sites pass. FullStory trails at 79%. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · phone field datacorewebvitals.io/state-of-cwv
Related signals Search (6) → JS libraries (26) → Scheduling (3) → Push notifications (5) → 210,902 crawled sites with Chrome field data, representing millions of real page loads · How we measured
210,902 crawled sites with Chrome field data, representing millions of real page loads. How we measured.