SheetJS on new websites

1. SheetJS appeared on about 1,200 new sites in the last 30 days.^[1]
2. Half of new SheetJS sites also use cdnjs.
3. It is unusually common among productivity launches: 27%, against 8.6% across new sites.

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

#	Movement	Tool	Share of all sites	Share of category[4]	Bar
1	–	jQuery	14.1%	34.5%
2	–	React Router	6.6%	16.2%
3	–	Motion	6.0%	14.5%
4	–	TanStack Router	4.4%	10.8%
5	–	Swiper	3.4%	8.2%
…
68	▼5	SheetJS	0.1%	0.2%

All-time shares across the new sites we track: of all of them, and of the sites using any Javascript Library tool. Among September launches it ranked #73 in Javascript Library, down from #68 in August. All 1551 in Javascript Library

Tool	Sites with both	vs all new sites	Bar
Chart.js	659	63x
Supabase	857	23x
cdnjs	2,023	11x
jsDelivr	1,834	10x
Netlify	728	3.7x

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

932 of the 4,125 sites using SheetJS are product launches we list individually. The other 3,193 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
Invoice Fast & Estimates invoicefastapp.com · Finance	Oct 19
Quantis: build, backtest and prop-test futures trading bots quantisbots.com · Finance	Oct 19
حَسبُك — منصة تحكيم المسابقات القرآنية hasbok.app	Oct 19
Meu Turno meuturno.app · Productivity	Oct 19
SolarRisk Calculator solarriskcalculator.tech	Oct 19
Калькулятор чистой прибыли MLM и прямых продаж — MLMProfitCalc mlmprofitcalc.com · Russia	Oct 19
Chia Ca Gọn – Phần mềm chia ca trực: sân bay, bệnh viện, nhà máy chiacagon.com	Oct 19
StaySignal — Encontrá la demanda que te falta staysignal.tech	Oct 19
Map Grid Highlighter mapgrids.app	Oct 19
مِرْصاد | MIRSAD — لوحة تحكم ذكية لرصد وتحليل الأداء التعليمي mirsad-edu.com	Oct 18
Markas Eğitim — Öğrenci, Devam, Yorum ve Ödeme Takip Sistemi markasegitim.com	Oct 18
I Love Tool Nest: Free Online PDF, Word and Image Tools ilovetoolnest.com · Productivity	Oct 18

Showing the most recent 12 of 932.

Watches, exports and the API give you all 4,125 sites using SheetJS, 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. Green hosting is the share whose web host The Green Web Foundation lists as running on green energy, among sites checked since 1 April 2026, against the same share for every new site we checked over that time. Data from The Green Web Foundation.
4. Some products people expect to see here are filed under a related category: UI Library.