CSS.escape polyfill on new websites
Polyfill for the CSS.escape() method from the CSSOM specification.
- Sites using CSS.escape polyfill
- 46
- since Sep 2026
- Last 30 days
- 40
-
new sites, to Nov 11
1 in the 30 days before - Last 7 days
- 39
-
new sites
1 in the week before
| First seen | Sep 1, 2026 |
|---|---|
| Last seen | Nov 12, 2026 |
| Website | github.com |
What we found
- CSS.escape polyfill appeared on about 40 new sites in the last 30 days.[1]
- Nine in ten new CSS.escape polyfill sites also use Nuxt.
New sites using CSS.escape polyfill, week by week
Each bar counts the new sites we found using CSS.escape polyfill in one week, since 10 September. Paler bars cover only part of a week.
Who uses CSS.escape polyfill
| Type | Sites | Share | Bar |
|---|---|---|---|
| Crypto | 4 | 28.6% | |
| Developer Tools | 2 | 14.3% | |
| Marketing | 2 | 14.3% | |
| Productivity | 2 | 14.3% | |
| Content | 1 | 7.1% | |
| E-commerce | 1 | 7.1% | |
| Education | 1 | 7.1% | |
| Social | 1 | 7.1% |
| Country | Sites | Share | Bar |
|---|---|---|---|
 China |
9 | 60.0% | |
 Canada |
1 | 6.7% | |
 France |
1 | 6.7% | |
 UK |
1 | 6.7% | |
 Japan |
1 | 6.7% | |
 Mexico |
1 | 6.7% | |
 Poland |
1 | 6.7% |
| Ending | Sites | Share | Bar |
|---|---|---|---|
| .com | 34 | 77.3% | |
| .net | 2 | 4.6% | |
| .space | 2 | 4.6% | |
| .ca | 1 | 2.3% | |
| .cc | 1 | 2.3% | |
| .dev | 1 | 2.3% | |
| .io | 1 | 2.3% | |
| .pl | 1 | 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% | ||
| … | |||||
| 709 | ▼426 |
CSS.escape polyfill
|
<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 #1324 in Javascript Library, down from #898 in September. All 1832 in Javascript Library
Often used with CSS.escape polyfill
Recently launched products built on CSS.escape polyfill
3 of the 46 sites using CSS.escape polyfill are product launches we list individually. The other 43 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.
Watches, exports and the API give you all 46 sites using CSS.escape polyfill, 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 CSS.escape polyfill when we detect CSS.escape polyfill 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