Sites built with Partytown
Library that relocates resource-intensive third-party scripts into a web worker to speed up page loads.
Get told when a new site ships with Partytown.
Stackdar watches every launch we detect and sends you the ones using Partytown, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work522 sites
472 found by StackScope, 50 via launch platforms
- StackScope Wider Web 375
- StackScope Discovery (Indie) 97
- Product Hunt 34
- PeerPush 6
- Hacker News 5
- Other 5
Partytown has been detected on 522 launches we've crawled, with 16 of those in October 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: Woosh — Flat rate shipping across Canada, yesterday.
It's most commonly paired with Google Tag Manager, Google Analytics, and Astro. By product type, the launches using it are most often Developer Tools (16%), Health (13%), and Marketing (12%). By domain ending, launches using it are 2.9 times as likely as the average launch to live on a .dev domain. The 47 scored launches using Partytown average a StackScope score of 7.8 out of 10, against 6.4 across all launches we score.
What kind of products ship with Partytown
218 launches
Domain endings using Partytown
522 sites
- .com 47.70%
- .dev 7.09%
- .app 4.98%
- .online 3.83%
- .io 3.64%
- .org 3.45%
- .ai 3.26%
- .in 3.26%
- .uk 2.68%
- .ca 2.49%
- .site 2.30%
- .net 1.72%
- .co 1.53%
- .me 1.53%
- .fr 1.15%
Country
10 of 522 sites, where we are confident of the country.
-
India
40.00%
-
Australia
10.00%
-
Canada
10.00%
-
Estonia
10.00%
-
United Kingdom
10.00%
-
Taiwan
10.00%
-
United States
10.00%
Share of new sites using Partytown
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026. Chart starts at first detection.
The shaded parts of the chart are measured against a different set of sites.
Grey: until 8 July 2026 we only tracked launches from launch platforms. From that date we crawl the wider web as well.
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 these lines without the technology itself changing. For a single continuous measure, switch to launch platforms.
Javascript Library leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
jQuery
|
14.46% | 34.96% |
| #2 | – |
React Router
|
6.60% | 15.95% |
| #3 | – |
Motion
|
6.09% | 14.73% |
| #4 | – |
TanStack Router
|
4.31% | 10.42% |
| #5 | – |
Swiper
|
3.59% | 8.68% |
| … | ||||
| #185 | ▼19 |
Partytown
Current page
|
0.01% | 0.03% |
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 #209 in Javascript Library, down from #190 in August. All 1441 in Javascript Library →
Often used with
| Tool | Sites |
|---|---|
Google Tag Manager
|
478 |
Google Analytics
|
380 |
Astro
|
349 |
Cloudflare
|
337 |
Cloudflare DNS
|
331 |
Tools most often detected on the same sites as Partytown.
Recent launches we can show
147 of the 522 sites using Partytown are product launches we list individually. The other 375 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
Tej
AI
Meshora — AI ideas to 3D mesh
Design
Gratis kentekencheck op basis van RDW data
Developer Tools
Luyện nghe tiếng Anh theo phương pháp Effortless English — EES
Education
heade.rs
Developer Tools
KoruTalk
Social
Aidy
Marketing
MakerRatio
Friender
Marketing
Free Meesho Seller Tools — Label Cropper & Profit Calculator
LoudOwls
Developer Tools
Showing the most recent 12 of 147.
The StackScope API serves all 522 sites using Partytown, filterable and exportable, from £15 a month.