1
At a glance the headline numbers for Chat & messaging impact
Performance impact by chat provider.
2
Providers ranked
After min-sites filter
149
Sites in sample
Combined across all items
0.07
Best CLS (p75)
Re:amaze
The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Re:amaze | 0.07 | 80.9% | 95 | |
| 2 | HubSpot Chat | 0.10 | 77.8% | 54 |
The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Smartsupp 0.1% 7 0.02
Re:amaze 1% 95 0.07
HubSpot Chat 0.6% 54 0.10
Tidio 0.1% 13 0.14
tawk.to 0.3% 31 0.19
Zendesk Chat 0.1% 10 0.18
LiveChat 0.1% 12 0.12
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
The State of Web Vitals · October 2026 · React sites (9,570) · 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
Re:amaze 1%
941.4s
9397ms
810.07
991.0s
89656ms
HubSpot Chat 0.6%
653.2s
96120ms
780.10
592.6s
421.6s
tawk.to 0.3%
553.8s
100146ms
690.19
483.0s
302.2s
Tidio 0.1%
503.6s
100125ms
750.14
422.3s
331.6s
LiveChat 0.1%
583.1s
100107ms
500.12
582.6s
461.9s
Zendesk Chat 0.1%
403.0s
100137ms
600.18
502.5s
401.2s
Smartsupp 0.1%
712.3s
100137ms
860.02
711.7s
571.6s
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.
The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv
Related signals Customer data platforms (6) → Font services (4) → A/B testing (12) → RUM (14) → 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.