has-cors on new websites
Tiny JavaScript module that detects whether the browser supports cross-origin requests.
- Sites using has-cors
- 90
- since Sep 2026
- Last 30 days
- 86
-
new sites, to Nov 11
1 in the 30 days before - Last 7 days
- 80
-
new sites
none in the week before
| First seen | Sep 12, 2026 |
|---|---|
| Last seen | Nov 12, 2026 |
| Website | github.com |
What we found
- has-cors appeared on about 86 new sites in the last 30 days.[1]
- Almost all new has-cors sites also use base64-arraybuffer.
New sites using has-cors, week by week
Each bar counts the new sites we found using has-cors in one week, since 10 September. Paler bars cover only part of a week.
Who uses has-cors
| Type | Sites | Share | Bar |
|---|---|---|---|
| Social | 8 | 33.3% | |
| Games | 7 | 29.2% | |
| Crypto | 3 | 12.5% | |
| AI | 2 | 8.3% | |
| Content | 1 | 4.2% | |
| Education | 1 | 4.2% | |
| Health | 1 | 4.2% | |
| Marketing | 1 | 4.2% |
| Country | Sites | Share | Bar |
|---|---|---|---|
 India |
4 | 33.3% | |
 France |
3 | 25.0% | |
 Ireland |
1 | 8.3% | |
 Italy |
1 | 8.3% | |
 Japan |
1 | 8.3% | |
 South Korea |
1 | 8.3% | |
 Russia |
1 | 8.3% |
| Ending | Sites | Share | Bar |
|---|---|---|---|
| .com | 42 | 47.7% | |
| .site | 7 | 8.0% | |
| .online | 6 | 6.8% | |
| .in | 4 | 4.6% | |
| .io | 4 | 4.6% | |
| .live | 3 | 3.4% | |
| .org | 3 | 3.4% | |
| .app | 2 | 2.3% |
Javascript Library on new sites
| # | Movement | Tool | Share of category[3] | Bar | |
|---|---|---|---|---|---|
| 1 | – |
jQuery
|
34.1% | ||
| 2 | – | jQuery Migrate | 18.7% | ||
| 3 | – |
React Router
|
15.9% | ||
| 4 | ▼1 |
Motion
|
13.8% | ||
| 5 | ▲1 |
TanStack Router
|
11.0% | ||
| 6 | ▼1 |
Swiper
|
8.0% | ||
| 7 | ▲1 |
ES Module Shims
|
7.2% | ||
| 8 | – |
js-cookie
|
6.1% | ||
| 9 | ▼1 |
Modernizr
|
5.7% | ||
| 10 | ▲1 |
GSAP
|
4.7% | ||
| 11 | ▲1 |
Lenis
|
3.4% | ||
| 12 | ▲3 |
Three.js
|
3.2% | ||
| … | |||||
| 544 | ▲421 |
has-cors
|
<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 October launches it ranked #733 in Javascript Library, up from #1154 in September. All 1832 in Javascript Library
Often used with has-cors
| Tool | Sites with both | vs all new sites |
|---|---|---|
parseqs
|
88 | 82511x |
parseuri
|
88 | 82511x |
base64-arraybuffer
|
88 | 65141x |
Socket.IO
|
88 | 310x |
Express
|
38 | 25x |
Tools that turn up far more often on has-cors sites than on new sites in general, and how many times as common each one is there.
Recently launched products built on has-cors
19 of the 90 sites using has-cors are product launches we list individually. The other 71 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.
Showing the most recent 12 of 19.
Watches, exports and the API give you all 90 sites using has-cors, from £15 a month.
Notes
- These figures cover websites that went live since April 2026, not the web as a whole.
- 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.
- 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 has-cors when we detect has-cors 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