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
16,737
Sites in sample
Combined across all items
0.06
Best CLS (p75)
PostHog Replay
The State of Web Vitals · October 2026 · 212,308 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | PostHog Replay | 0.06 | 85.6% | 316 | |
| 2 | Lucky Orange | 0.07 | 79.6% | 91 | |
| 3 | Smartlook | 0.10 | 75.8% | 175 | |
| 4 | Microsoft Clarity | 0.10 | 76.0% | 9,700 | |
| 5 | Crazy Egg | 0.11 | 74.4% | 211 | |
| 6 | Mouseflow | 0.11 | 71.6% | 330 | |
| 7 | Contentsquare | 0.11 | 73.5% | 677 | |
| 8 | Hotjar | 0.11 | 74.9% | 4,929 | |
| 9 | FullStory | 0.20 | 66.4% | 308 |
The State of Web Vitals · October 2026 · 212,308 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
PostHog Replay 0.1% 316 0.06
Lucky Orange 0% 91 0.07
Microsoft Clarity 4.6% 9,700 0.10
Smartlook 0.1% 175 0.10
Hotjar 2.3% 4,929 0.11
Crazy Egg 0.1% 211 0.11
Contentsquare 0.3% 677 0.11
Inspectlet 0% 40 0.11
Mouseflow 0.2% 330 0.11
LogRocket 0% 31 0.13
FullStory 0.1% 308 0.20
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
86% of PostHog Replay sites pass CLS. FullStory trails 20 points behind, leaving 34% of its sites failing. computed
The State of Web Vitals · October 2026 · 212,308 crawled 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
Microsoft Clarity 4.6%
852.1s
9882ms
760.10
811.6s
601.1s
Hotjar 2.3%
852.1s
9978ms
750.11
791.6s
571.2s
Contentsquare 0.3%
782.4s
96100ms
740.11
791.7s
631.1s
Mouseflow 0.2%
872.1s
9982ms
720.11
811.6s
641.1s
PostHog Replay 0.1%
832.1s
9993ms
860.06
821.6s
611.1s
FullStory 0.1%
702.8s
8997ms
660.20
771.8s
571.1s
Crazy Egg 0.1%
842.2s
9981ms
740.11
801.7s
611.1s
Smartlook 0.1%
832.1s
9873ms
760.10
771.7s
441.3s
Lucky Orange 0%
822.0s
10077ms
800.07
781.8s
77733ms
Inspectlet 0%
861.8s
9572ms
730.11
821.3s
671.1s
LogRocket 0%
682.6s
95119ms
680.13
771.8s
68858ms
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.
PostHog Replay leads on CLS: 86% of its sites pass. FullStory trails at 66%. computed
The State of Web Vitals · October 2026 · 212,308 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
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212,308 crawled sites with Chrome field data, representing millions of real page loads. How we measured.