Sites built with opentype.js
JavaScript library for parsing and rendering OpenType and TrueType fonts in the browser.
Get told when a new site ships with opentype.js.
Stackdar watches every launch we detect and sends you the ones using opentype.js, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work51 sites
46 found by StackScope, 5 via launch platforms
- StackScope Wider Web 31
- StackScope Discovery (Indie) 15
- Product Hunt 3
- Hacker News 1
- PeerPush 1
opentype.js has been detected on 51 launches we've crawled, with 24 of those in September 2026 (0.0% of the month's launches so far). The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Logo, today.
It's most commonly paired with Google Fonts, jsDelivr, and HTTP/3. By product type, the launches using it are most often Design (53%), Productivity (11%), and Social (11%).
What kind of products ship with opentype.js
19 launches
Domain endings using opentype.js
51 sites
- .com 54.90%
- .app 5.88%
- .co 5.88%
- .cloud 3.92%
- .dev 3.92%
- .online 3.92%
- .site 3.92%
- .art 1.96%
Share of new sites using opentype.js
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. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. 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
|
14.61% | 35.60% |
| #2 | – |
React Router
|
6.35% | 15.47% |
| #3 | – |
Motion
|
5.97% | 14.54% |
| #4 | – |
TanStack Router
|
4.12% | 10.04% |
| #5 | – |
Swiper
|
3.74% | 9.12% |
| … | ||||
| #394 | ▼26 |
opentype.js
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 August launches it ranked #420 in Javascript Library, down from #394 in July. All 1310 in Javascript Library →
Often used with
| Tool | Sites |
|---|---|
Google Fonts
|
29 |
jsDelivr
|
26 |
| HTTP/3 | 26 |
Cloudflare DNS
|
24 |
Cloudflare
|
20 |
Tools most often detected on the same sites as opentype.js.
Recent launches we can show
20 of the 51 sites using opentype.js are product launches we list individually. The other 31 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
Logo
Design
Typeflow — Style Text & Posts, Warp Glyphs, Export SVG/PNG | 180+ Fonts
Design
ClinExcel — Practise the exam against a patient who behaves like one · ClinExcel
Lucenly — studiekompanjonen som anpassar sig
Moldea — patrones planos para piezas de cerámica
Grandimi — Estime ta taille adulte
GlyphSnap — Turn Handwriting Into a Font
Design
Kontaktly
Productivity
SVG to TTF Font & Icon Maker
Design
Keychain Factory
TactileFab Studio — production files for tactile signage
Fontxsis Lab — Glyphs Builder
Design
Showing the most recent 12 of 20.
The StackScope API serves all 51 sites using opentype.js, filterable and exportable, from £15 a month.