Session recording impact: 8 providers ranked | The State of Web Vitals 2026

LCP INP CLS

At a glance the headline numbers for Session recording impact

Session-recording tools ranked by performance impact.

Providers ranked

After min-sites filter

7,824

Sites in sample

Combined across all items

0.04

Best CLS (p75)

Smartlook

The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv

The ranking sorted by CLS at p75, fastest first

#	Provider	CLS p75	Passing	Sites
1	Smartlook	0.04	93.0%	88
2	FullStory	0.05	83.6%	146
3	PostHog Replay	0.06	87.0%	166
4	Hotjar	0.06	84.5%	2,379
5	Microsoft Clarity	0.06	84.6%	4,465
6	Crazy Egg	0.06	82.6%	93
7	Mouseflow	0.07	86.1%	169
8	Contentsquare	0.08	80.9%	318

The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75

Smartlook 0.1% 88 93% 0.04

PostHog Replay 0.2% 166 87% 0.06

Mouseflow 0.2% 169 86% 0.07

Microsoft Clarity 4.7% 4,465 85% 0.06

Hotjar 2.5% 2,379 85% 0.06

FullStory 0.2% 146 84% 0.05

Crazy Egg 0.1% 93 83% 0.06

Lucky Orange 0% 38 82% 0.07

Contentsquare 0.3% 318 81% 0.08

Inspectlet 0% 15 80% 0.09

LogRocket 0% 16 63% 0.19

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

87% of PostHog Replay sites pass CLS. Contentsquare trails 6 points behind. computed

The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv

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 4.7%

802.3s

92141ms

850.06

741.8s

541.2s

Hotjar 2.5%

792.3s

93136ms

850.06

731.9s

541.3s

Contentsquare 0.3%

742.5s

85168ms

810.08

741.8s

591.1s

Mouseflow 0.2%

802.3s

94136ms

860.07

751.8s

591.2s

PostHog Replay 0.2%

762.5s

88148ms

870.06

642.0s

431.4s

FullStory 0.2%

832.2s

91124ms

840.05

831.5s

66947ms

Crazy Egg 0.1%

722.6s

89137ms

830.06

771.8s

521.3s

Smartlook 0.1%

742.5s

92138ms

930.04

642.3s

511.2s

Lucky Orange 0%

842.0s

97102ms

820.07

841.5s

76731ms

LogRocket 0%

633.1s

93169ms

630.19

562.3s

561.1s

Inspectlet 0%

1001.9s

93135ms

800.09

931.1s

79633ms

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: 87% of its sites pass. Contentsquare trails at 81%. computed

The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv

Related signals Search (4) → JS libraries (22) → Scheduling (3) → Push notifications (4) → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured