Sites built with Captionator
JavaScript polyfill that renders WebVTT and SRT caption tracks for HTML5 video and audio.
Found via: StackScope Wider Web 15
Captionator has been detected on 15 launches we've crawled. Most recent detection was on September 27, 2026.
It's most commonly paired with GSAP, Three.js, and Articulate Storyline.
Domain endings using Captionator
15 sites
- .com 53.33%
- .online 20.00%
- .cloud 6.67%
- .fr 6.67%
- .space 6.67%
- .uk 6.67%
Share of new sites using Captionator
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.
Javascript Library leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
jQuery
|
14.40% | 34.90% |
| #2 | – |
React Router
|
6.63% | 16.07% |
| #3 | – |
Motion
|
6.11% | 14.82% |
| #4 | – |
TanStack Router
|
4.32% | 10.47% |
| #5 | – |
Swiper
|
3.57% | 8.65% |
| … | ||||
| #709 | ▼109 |
Captionator
Current page
|
<0.01% | <0.01% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Javascript Library tool.Among September launches it ranked #721 in Javascript Library, down from #612 in August. All 1445 in Javascript Library →
Often used with
| Tool | Sites |
|---|---|
GSAP
|
15 |
Three.js
|
14 |
Articulate Storyline
|
14 |
pathseg polyfill
|
12 |
| HTTP/3 | 7 |
Tools most often detected on the same sites as Captionator.
15 sites across the wider web use Captionator
None of them is a product launch we list individually, so there is nothing to show here. They still count towards the figures above. How StackScope Discovery works
The StackScope API serves all 15 sites using Captionator, filterable and exportable, from £15 a month.