Chat & messaging impact React sites

Performance impact by chat provider.

Field data PhoneDesktopAll Scope All sites October 2026 edition · Phone field outcomes · React sites only
Metric LCP INP CLS
React Scoped to 9,570 sites out of 210,902 analyzed (frameworks) Compare with all sites →
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
121ms
Best INP (p75)
Re:amaze
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by INP at p75, fastest first

# Provider INP p75 Passing Sites
1 Re:amaze 121ms 88.9%
95
2 HubSpot Chat 146ms 91.2%
54
The State of Web Vitals · October 2026 · React sites (9,570) · phone field datacorewebvitals.io/state-of-cwv
3

Passing INP per provider which group passes the INP most often

ProviderSitesPassing INPp75
tawk.to 0.3% 31 100% 157ms
Zendesk Chat 0.1% 10 100% 146ms
Smartsupp 0.1% 7 100% 124ms
HubSpot Chat 0.6% 54 91% 146ms
Re:amaze 1% 95 89% 121ms
LiveChat 0.1% 12 88% 128ms
Tidio 0.1% 13 78% 165ms
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good INP (200ms at p75) · one value per site
The State of Web Vitals · October 2026 · React sites (9,570) · 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
Re:amaze 1%
891.5s
89121ms
790.09
981.0s
89677ms
HubSpot Chat 0.6%
643.3s
91146ms
810.04
502.7s
391.5s
tawk.to 0.3%
415.0s
100157ms
770.10
353.5s
252.3s
Tidio 0.1%
553.0s
78165ms
820.03
462.4s
361.6s
LiveChat 0.1%
563.2s
88128ms
670.13
562.9s
382.0s
Zendesk Chat 0.1%
433.0s
100146ms
570.15
432.5s
431.5s
Smartsupp 0.1%
831.9s
100124ms
830.01
831.4s
501.0s
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) · phone 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