Sites using JS APIs
Hosted CDN for common JavaScript and CSS libraries.
4 sites
3 found by StackScope, 1 via launch platforms
- StackScope Wider Web 2
- StackScope Discovery (Indie) 1
- Product Hunt 1
JS APIs has been detected on 4 launches since first appearing in July 2026. Most recent detection: Tenpu: Innovatieve Aanbestedingssoftware | ISO 27001 & TenderNed Integratie, yesterday.
It's most commonly paired with Cloudflare, Google Fonts, and Google Tag Manager.
Share of new sites using JS APIs
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded part of the chart is measured against a different set of sites.
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 that line without the technology itself changing. For a single continuous measure, switch to launch platforms.
CDN leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Cloudflare
|
46.94% | 93.07% |
| #2 | – |
Fastly
|
2.66% | 5.27% |
| #3 | – |
AWS CloudFront
|
1.04% | 2.06% |
| #4 | – |
Bunny CDN
|
0.50% | 1.00% |
| #5 | – |
Kakao CDN
|
0.09% | 0.17% |
| … | ||||
| #167 | ▼67 | JS APIs Current page | <0.01% | <0.01% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any CDN tool.Among August launches it ranked #158 in CDN, down from #91 in July. All 320 in CDN →
Often used with
| Tool | Sites |
|---|---|
|
Cloudflare
|
4 |
Google Fonts
|
4 |
Google Tag Manager
|
4 |
Google Search Console
|
3 |
Cloudflare DNS
|
3 |
Tools most often detected on the same sites as JS APIs.
Recent launches we can show
2 of the 4 sites using JS APIs are product launches we list individually. The other 2 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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
The StackScope API serves all 4 sites using JS APIs, filterable and exportable, from £15 a month.