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highlight.js on new websites

Open source JavaScript syntax highlighting library for code on the web.

Sites using highlight.js
3,776
since May 2026
Last 30 days
0.0%
of new sites, to Oct 19
no change on the 30 days before
Last 7 days
0.0%
of new sites, 7-day average
no change on the week before
Rank in Javascript Library
#71
of 1551 tools, all time
First seen May 14, 2026
Last seen Oct 20, 2026
Website highlightjs.org

What we found

  1. highlight.js appeared on about 760 new sites in the last 30 days.[1]
  2. Eight in ten new highlight.js sites also use jQuery.
  3. It is unusually common on .dev domains: 2.6% of the domains running it, against 1.2% of domains across new sites.

Share of new sites using highlight.js

0.000% 0.025% 0.050% 0.075% 0.100% 10 Sep Oct

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

Who uses highlight.js

Kind of site 1,004 sites with a known type
TypeSitesShareBar
Developer Tools 150 14.9%
Education 135 13.5%
E-commerce 133 13.3%
Productivity 127 12.7%
Health 89 8.9%
AI 87 8.7%
Marketing 73 7.3%
Social 56 5.6%
Finance 41 4.1%
Content 39 3.9%
Games 34 3.4%
Design 18 1.8%
Country[2] 597 sites with a known country
CountrySitesShareBar
South Korea 524 87.8%
US 10 1.7%
Brazil 8 1.3%
UK 7 1.2%
Japan 7 1.2%
Slovakia 7 1.2%
Australia 6 1.0%
Canada 5 0.8%
India 4 0.7%
Germany 3 0.5%
Italy 3 0.5%
Poland 3 0.5%
Domain ending 3,775 sites
EndingSitesShareBar
.com 2,612 69.2%
.in 132 3.5%
.online 103 2.7%
.dev 93 2.5%
.org 90 2.4%
.xyz 79 2.1%
.site 71 1.9%
.net 66 1.8%
.uk 44 1.2%
.io 38 1.0%
.me 36 1.0%
.app 33 0.9%
Green hosting[3] 62 checked sites since Apr 2026
SitesGreenBar
highlight.js 48%
All new sites 47%

Javascript Library on new sites

# Movement Tool Share of all sites Share of category[4] Bar
1 – jQuery 14.1% 34.4%
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%
…
71 ▼10 highlight.js 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 #75 in Javascript Library, down from #65 in August. All 1551 in Javascript Library

Often used with highlight.js

Tool Sites with both vs all new sites Bar
Google AdSense 1,211 25x
Masonry 1,199 24x
cdnjs 1,758 11x
jQuery 3,001 5.6x
WordPress 1,220 2.6x

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

Recently launched products built on highlight.js

245 of the 3,776 sites using highlight.js are product launches we list individually. The other 3,531 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
Easy POS Docs - Introduction easyproducts.co.in · India Oct 19 Vue.js Frappe jQuery cdnjs
Managed Deep Agents v0.9 langchain.com · AI · United States Oct 19 jQuery BugHerd cdnjs Chili Piper
prohoster prohoster.info · Netherlands Oct 19 React Ahrefs AI Engine All in One SEO
LogLite - Agent log viewer logtrove.com · Developer Tools Oct 18 Cloudflare DOMPurify Marked Umami
WaliChat wali.chat · AI · Estonia Oct 18 Vue.js Heroku jQuery AOS
Connected business workspace | Nsika Sync nsika-technologies.com · Productivity Oct 17 jQuery ApexCharts cdnjs GoDaddy DNS
MJ AI — AI chat assistant for Burmese and English mjai.site · AI Oct 17 React Cloudflare DOMPurify Firebase
Qagoj — Business Document Management qagoj.com · Productivity Oct 17 Next.js React Cloudflare DNS i18next
MD File Viewer — Open & Render Markdown Files Locally markdownfileviewer.com Oct 17 Cloudflare DOMPurify Marked Mermaid
Bytezeit bytezeit.app · Israel Oct 16 Aladhan cdnjs Cloudflare DNS Cloudflare Email Routing
Coverage · Linked Art in C# linkedart.net · Developer Tools Oct 16 ASP.NET Caddy cdnjs Google Fonts
PRAVECT — Geliştirme ön gösterimi | Mühendislik kontrol katmanı pravect.com · Health Oct 16 Cloudflare

Showing the most recent 12 of 245.

Watches, exports and the API give you all 3,776 sites using highlight.js, from £15 a month.

Notes

  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. We count a country only where it is stated plainly enough to be sure: a governing-law clause or company registration number on a legal page, a phone country code, or a country domain ending. Sites that publish none are not counted at all.
  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.

How this page is made

FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards highlight.js when we detect highlight.js on it at that look.

Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.