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Sites built with UAParser.js

JavaScript library for detecting browser, engine, OS and device from the user agent.

#74 of 1444 in Javascript Library First seen: Jun 29, 2026 Last seen: Oct 4, 2026 Website: github.com
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3,162 sites

3,152 found by StackScope, 10 via launch platforms

StackScope Wider Web 3,104 StackScope Discovery (Indie) 48 Product Hunt 9 Hacker News 1
  • StackScope Wider Web 3,104
  • StackScope Discovery (Indie) 48
  • Product Hunt 9
  • Hacker News 1
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.1% -0.0pp
Most used with jQuery, Google Fonts, HTTP/3
Top product types E-commerce, Health, Marketing

UAParser.js has been detected on 3,162 launches we've crawled, with 90 of those in October 2026 (0.0% of the month's launches so far). The 7-day rolling share is 0.1%, roughly steady week on week. Most recent detection: Buat Polling Online Gratis Tanpa Daftar, today.

It's most commonly paired with jQuery, Google Fonts, and HTTP/3. By product type, the launches using it are most often E-commerce (22%), Health (18%), and Marketing (11%). By domain ending, launches using it are 16.9 times as likely as the average launch to live on a .store domain.

What kind of products ship with UAParser.js

651 launches

E-commerce
21.81%
Health
17.82%
Marketing
10.75%
Games
9.06%
Education
8.45%
Content
6.30%
Finance
6.14%
Productivity
5.68%
Design
3.69%
Social
3.38%
Developer Tools
2.76%
Hiring & HR
1.38%
AI
1.23%
Crypto
0.92%
Directory
0.61%

Domain endings using UAParser.js

3,153 sites

  • .com 61.59%
  • .store 6.53%
  • .nz 3.96%
  • .in 3.46%
  • .online 2.76%
  • .org 2.76%
  • .site 2.35%
  • .net 1.97%
  • .uk 1.68%
  • .xyz 1.62%
  • .me 1.33%
  • .ca 0.89%
  • .art 0.82%
  • .co 0.82%
  • .br 0.51%

Country

593 of 3,162 sites, where we are semi-confident of the country.

  • Russia Russia 39.46%
  • New Zealand New Zealand 13.83%
  • India India 10.62%
  • United Kingdom United Kingdom 7.08%
  • Vietnam Vietnam 4.89%
  • United States United States 4.22%
  • Italy Italy 2.36%
  • Canada Canada 1.85%
  • Sweden Sweden 1.85%
  • Brazil Brazil 1.69%
  • Slovakia Slovakia 1.35%
  • Australia Australia 1.18%
  • France France 1.18%
  • Germany Germany 0.84%
  • Indonesia Indonesia 0.84%

Share of new sites using UAParser.js

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026. Chart starts at first detection.

0.1%
last 7 days
-0.0pp vs prior week
0.0%
October so far
90 of 183,056 sites
3,162
sites all time
since Jun 2026
UAParser.js daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 10 September 2026: we improved our infrastructure to index new sites much sooner, often on the day they go live, so the cohort this share is measured against changes here. 5% 2% 0% Jul Aug Sep Oct Weekly averages before this point, daily after. Jul 6 · 0 / 551 = 0.0% Jul 7 · 0 / 1215 = 0.0% Jul 8 · 3 / 13058 = 0.0% Jul 9 · 10 / 24385 = 0.0% Jul 10 · 11 / 23136 = 0.0% Jul 11 · 2 / 16598 = 0.0% Jul 12 · 8 / 20855 = 0.0% Jul 13 · 7 / 21694 = 0.0% Jul 14 · 6 / 21271 = 0.0% Jul 15 · 6 / 18184 = 0.0% Jul 16 · 4 / 14818 = 0.0% Jul 17 · 10 / 20432 = 0.0% Jul 18 · 12 / 23478 = 0.1% Jul 19 · 11 / 27059 = 0.0% Jul 20 · 12 / 23664 = 0.1% Jul 21 · 12 / 22735 = 0.1% Jul 22 · 8 / 24250 = 0.0% Jul 23 · 5 / 17901 = 0.0% Jul 24 · 6 / 13842 = 0.0% Jul 25 · 4 / 9503 = 0.0% Jul 26 · 15 / 21509 = 0.1% Jul 27 · 14 / 37022 = 0.0% Jul 28 · 21 / 41716 = 0.1% Jul 29 · 42 / 55070 = 0.1% Jul 30 · 28 / 48357 = 0.1% Jul 31 · 58 / 56264 = 0.1% Aug 1 · 42 / 55279 = 0.1% Aug 2 · 48 / 54147 = 0.1% Aug 3 · 48 / 52954 = 0.1% Aug 4 · 34 / 40862 = 0.1% Aug 5 · 27 / 35322 = 0.1% Aug 6 · 76 / 38374 = 0.2% Aug 7 · 21 / 39545 = 0.1% Aug 8 · 24 / 41872 = 0.1% Aug 9 · 21 / 36758 = 0.1% Aug 10 · 28 / 30929 = 0.1% Aug 11 · 17 / 33479 = 0.1% Aug 12 · 33 / 35226 = 0.1% Aug 13 · 37 / 52702 = 0.1% Aug 14 · 30 / 54079 = 0.1% Aug 15 · 32 / 53581 = 0.1% Aug 16 · 32 / 54025 = 0.1% Aug 17 · 55 / 43300 = 0.1% Aug 18 · 20 / 55855 = 0.0% Aug 19 · 34 / 51008 = 0.1% Aug 20 · 39 / 68739 = 0.1% Aug 21 · 44 / 93949 = 0.0% Aug 22 · 37 / 94684 = 0.0% Aug 23 · 56 / 93814 = 0.1% Aug 24 · 64 / 81607 = 0.1% Aug 25 · 61 / 71189 = 0.1% Aug 26 · 43 / 66498 = 0.1% Aug 27 · 64 / 86732 = 0.1% Aug 28 · 48 / 87000 = 0.1% Aug 29 · 60 / 86223 = 0.1% Aug 30 · 62 / 100549 = 0.1% Aug 31 · 102 / 100616 = 0.1% Sep 1 · 84 / 103879 = 0.1% Sep 2 · 71 / 110129 = 0.1% Sep 3 · 86 / 104005 = 0.1% Sep 4 · 67 / 97746 = 0.1% Sep 5 · 77 / 95526 = 0.1% Sep 6 · 51 / 83143 = 0.1% Sep 7 · 52 / 80736 = 0.1% Sep 8 · 60 / 72752 = 0.1% Sep 9 · 52 / 68993 = 0.1% Sep 10 · 51 / 73354 = 0.1% Sep 11 · 64 / 78374 = 0.1% Sep 12 · 21 / 51731 = 0.0% Sep 13 · 33 / 53933 = 0.1% Sep 14 · 34 / 54566 = 0.1% Sep 15 · 37 / 57299 = 0.1% Sep 16 · 44 / 59330 = 0.1% Sep 17 · 44 / 57489 = 0.1% Sep 18 · 24 / 53626 = 0.0% Sep 19 · 28 / 45564 = 0.1% Sep 20 · 30 / 44187 = 0.1% Sep 21 · 40 / 47408 = 0.1% Sep 22 · 52 / 54268 = 0.1% Sep 23 · 46 / 58242 = 0.1% Sep 24 · 38 / 53385 = 0.1% Sep 25 · 34 / 51254 = 0.1% Sep 26 · 28 / 102274 = 0.0% Sep 27 · 27 / 52749 = 0.1% Sep 28 · 36 / 60698 = 0.1% Sep 29 · 46 / 77719 = 0.1% Sep 30 · 40 / 69206 = 0.1% Oct 1 · 25 / 68197 = 0.0% Oct 2 · 33 / 63063 = 0.1% Oct 3 · 32 / 51796 = 0.1%
Jun 8, 2026 90 days Oct 3, 2026

The shaded parts of the chart are measured against a different set of sites.

Grey: until 8 July 2026 we only tracked launches from launch platforms. From that date we crawl the wider web as well.

Amber: on 10 September 2026 we improved our infrastructure so we can 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 that date. We record each site as it was when we found it.

The share is a proportion of whatever we were tracking at the time, so it can step at these lines without the technology itself changing. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

Javascript Library leaders

Tool % of launches % of category
#1 – jQuery 14.43% 35.04%
#2 – React Router 6.63% 16.09%
#3 – Motion 6.11% 14.84%
#4 – TanStack Router 4.32% 10.49%
#5 – Swiper 3.58% 8.69%
…
#74 ▼1 UAParser.js Current page 0.07% 0.16%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Javascript Library tool. All 1444 in Javascript Library →

Often used with

Tool Sites
jQuery 2,379
Google Fonts 2,059
HTTP/3 1,526
PhotoSwipe 1,418
Masonry 1,400

Tools most often detected on the same sites as UAParser.js.

Recent launches we can show

58 of the 3,162 sites using UAParser.js are product launches we list individually. The other 3,104 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works

Buat Polling Online Gratis Tanpa Daftar Oct 2, 2026 ContextWizard | AI Chat Backup & Search | amiPro Sep 30, 2026 AI 無料Webルーレット - ランダム抽選サイト | ROULETTE MAKER Sep 22, 2026 Productivity Web時報 - 音声読み上げで正確な時間を知らせるインターネット時計 Sep 22, 2026 Productivity Rivwake Sep 20, 2026 Games Emojis para copiar y pegar - Busca emojis en español Sep 16, 2026 Social Portal Sever — Pilot the Suit. Sever the Anomaly. Extract Alive. Sep 10, 2026 Games Screenshot of BitBrowser, a launch using UAParser.js BitBrowser Sep 9, 2026 · score 6.0 خانه | کارین پلیمر Sep 8, 2026 The Ultimate RGB App for PC: Sync All Your Lighting Devices Sep 7, 2026 EV PromCharge — สถานีชาร์จรถไฟฟ้าใกล้ฉัน · จุดชาร์จรถ EV ทั่วในไทย Sep 7, 2026 CekCuaca — Cuaca Hari Ini & Info Gempa Terkini BMKG Sep 5, 2026

Showing the most recent 12 of 58.

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