TrackJS on new websites

1. TrackJS appeared on about 29 new sites in the last 30 days.^[1]
2. Almost all new TrackJS sites also use jQuery.

The line is the 7-day average share of new sites that use TrackJS, since 10 September.

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	Sentry	4.7%	96.8%
2	–	Datadog	0.1%	2.0%
3	–	Rollbar	0.1%	1.4%
4	–	Bugsnag	<0.1%	0.9%
5	▼1	LogRocket	<0.1%	0.2%
…
9	–	TrackJS	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Error Tracking tool. TrackJS is typically used alongside Sentry rather than instead of it. All 35 in Error Tracking

Tool	Sites with both	vs all new sites	Bar
PlatformaLP	39	65507x
LivePerson	50	29212x
Creatium	50	25450x
particles.js	33	115x
Modernizr	36	17x

Tools that turn up far more often on TrackJS sites than on new sites in general, and how many times as common each one is there.

1 of the 90 sites using TrackJS are product launches we list individually. The other 89 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

Site	Found	Also detected
Kupi.com kupi.com · Russia	Oct 3

Watches, exports and the API give you all 90 sites using TrackJS, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.