SyntaxHighlighter on new websites

1. SyntaxHighlighter appeared on 14 new sites in the last 30 days.^[1]
2. Nine in ten new SyntaxHighlighter sites also use XRegExp.

The line is the 7-day average share of new sites that use SyntaxHighlighter, day by day for the last 90 days and weekly before that (left of the dashed line). It starts at our first detection. The shaded areas were measured against a different set of sites, so the line can step there without SyntaxHighlighter itself changing.^[2][3]

#	Movement	Tool	Share of all sites	Share of category[5]	Bar
1	–	jQuery	14.2%	34.5%
2	–	React Router	6.7%	16.2%
3	–	Motion	6.0%	14.6%
4	–	TanStack Router	4.4%	10.7%
5	–	Swiper	3.4%	8.3%
…
492	▼68	SyntaxHighlighter	<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. Among September launches it ranked #514 in Javascript Library, down from #446 in August. All 1544 in Javascript Library

Tool	Sites with both	vs all new sites	Bar
XRegExp	45	48227x
jQuery	43	6.3x

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

1 of the 48 sites using SyntaxHighlighter are product launches we list individually. The other 47 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts.

Site	Found	Also detected
SensWear sens-wear.com · Developer Tools · Finland	Aug 25

The StackScope API serves all 48 sites using SyntaxHighlighter, filterable and exportable, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well, so the share is measured against a much larger set of sites. For one continuous measure, view launch platforms only.
3. Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.
4. 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.
5. Some products people expect to see here are filed under a related category: UI Library.