JavaScript library for parsing, formatting and validating international phone numbers.
Get told when a new site ships with libphonenumber-js.
3,944 new sites with libphonenumber-js first seen in the last 30 days.
Stackdar watches every launch we detect and sends you the ones using libphonenumber-js, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work10,768 sites
10,751 found by StackScope, 17 via launch platforms
- StackScope Wider Web 10,401
- StackScope Discovery (Indie) 350
- Product Hunt 17
libphonenumber-js has been detected on 10,768 launches we've crawled, with 1515 of those in October 2026 (0.2% of the month's launches so far). The 7-day rolling share is 0.2%, roughly steady week on week. Most recent detection: moinho atendimento · IA no seu WhatsApp, today.
It's most commonly paired with Cloudflare, Cloudflare Bot Management, and GoHighLevel. By product type, the launches using it are most often Health (28%), Marketing (27%), and Finance (16%). By domain ending, launches using it are 2.4 times as likely as the average launch to live on a .org domain. The 16 scored launches using libphonenumber-js average a StackScope score of 6.7 out of 10, against 6.5 across all launches we score.
What kind of products ship with libphonenumber-js
2,583 launches
Domain endings using libphonenumber-js
10,741 sites
- .com 77.84%
- .org 5.04%
- .uk 3.25%
- .net 2.68%
- .co 2.07%
- .online 1.93%
- .ca 1.00%
- .site 0.82%
- .fr 0.74%
- .io 0.64%
- .au 0.60%
- .ai 0.56%
- .us 0.44%
- .app 0.24%
- .store 0.20%
Country
1,541 of 10,768 sites, where we are semi-confident of the country.
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United States 46.27%
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United Kingdom 23.04%
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Canada 7.53%
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France 5.45%
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Australia 5.32%
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Iran 4.28%
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India 1.17%
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Sweden 1.04%
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New Zealand 0.78%
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Spain 0.65%
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Germany 0.52%
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Mexico 0.45%
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Ireland 0.39%
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Brazil 0.32%
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Italy 0.32%
Share of new sites using libphonenumber-js
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026. Chart starts at first detection.
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.
Javascript Library leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
|
14.28% | 34.72% |
| #2 | – |
|
6.65% | 16.19% |
| #3 | – |
|
6.03% | 14.67% |
| #4 | – |
|
4.36% | 10.61% |
| #5 | – |
|
3.49% | 8.48% |
| … | ||||
| #42 | ▲13 |
|
0.19% | 0.47% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Javascript Library tool.libphonenumber-js is typically used alongside jQuery rather than instead of it.Among September launches it ranked #40 in Javascript Library, up from #53 in August. All 1509 in Javascript Library →
Recent launches we can show
367 of the 10,768 sites using libphonenumber-js are product launches we list individually. The other 10,401 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
Showing the most recent 12 of 367.
The StackScope API serves all 10,768 sites using libphonenumber-js, filterable and exportable, from £15 a month.