prepareTransition on new websites

1. prepareTransition appeared on about 110 new sites in the last 30 days.^[1]
2. Almost all new prepareTransition sites also use Shopify.

The line is the 7-day average share of new sites that use prepareTransition, since 3 October. It starts at our first detection.

#	Movement	Tool	Share of all sites	Share of category[3]	Bar
1	–	jQuery	13.7%	34.1%
2	–	jQuery Migrate	7.5%	18.7%
3	–	React Router	6.4%	15.9%
4	▼1	Motion	5.6%	13.8%
5	▲1	TanStack Router	4.4%	11.0%
6	▼1	Swiper	3.2%	8.0%
7	▲1	ES Module Shims	2.9%	7.2%
8	–	js-cookie	2.5%	6.1%
9	▼1	Modernizr	2.3%	5.7%
10	▲1	GSAP	1.9%	4.7%
11	▲1	Lenis	1.4%	3.4%
12	▲3	Three.js	1.3%	3.2%
…
495		prepareTransition	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Javascript Library tool. prepareTransition is typically used alongside jQuery rather than instead of it. All 1832 in Javascript Library

Tool	Sites with both	vs all new sites	Bar
Handlebars	81	681x
AOS	52	51x
Modernizr	86	32x
WebMCP	108	20x
Shopify	111	17x

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

1 of the 117 sites using prepareTransition are product launches we list individually. The other 116 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
El Bueno Coffee Roasters elbuenocoffee.com · E-commerce · India	Nov 7

Watches, exports and the API give you all 117 sites using prepareTransition, 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.
3. Some products people expect to see here are filed under a related category: UI Library.