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
0.14
Best CLS (p75)
Re:amaze
The State of Web Vitals · October 2026 · React sites (9,570) · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Re:amaze | 0.14 | 50.0% | 95 | |
| 2 | HubSpot Chat | 0.17 | 69.4% | 54 |
The State of Web Vitals · October 2026 · React sites (9,570) · desktop field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
LiveChat 0.1% 12 0.09
Zendesk Chat 0.1% 10 0.12
HubSpot Chat 0.6% 54 0.17
tawk.to 0.3% 31 0.16
Smartsupp 0.1% 7 0.11
Re:amaze 1% 95 0.14
Tidio 0.1% 13 0.26
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) · 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
Re:amaze 1%
712.4s
100121ms
500.14
100833ms
100691ms
HubSpot Chat 0.6%
633.0s
9776ms
690.17
582.5s
391.6s
tawk.to 0.3%
503.3s
100152ms
630.16
442.8s
72.3s
Tidio 0.1%
433.5s
10050ms
430.26
711.9s
571.5s
LiveChat 0.1%
562.6s
10078ms
780.09
442.1s
381.8s
Zendesk Chat 0.1%
712.9s
8667ms
710.12
712.4s
571.8s
Smartsupp 0.1%
604.1s
10057ms
600.11
603.8s
403.4s
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) · desktop 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.