High-performance JavaScript compression library for zlib, gzip, and zip.
635 sites
628 found by StackScope, 7 via launch platforms
- StackScope Wider Web 549
- StackScope Discovery (Indie) 79
- Product Hunt 3
- Other 3
- Hacker News 1
fflate appeared on about 150 new sites in the last 30 days.
These figures cover websites that went live since April 2026, not the web as a whole.
Get told when a new site ships with fflate.
145 new sites with fflate first seen in the last 30 days.
Stackdar watches every launch we detect and sends you the ones using fflate, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workShare of new sites using fflate
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 areas were measured against a different set of sites, so the line can step there without fflate itself changing.
Coverage details
Before the dashed line where the dots begin, the line is a weekly average. After it, the last 90 days are shown one day at a time.
Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: 8 July to 10 September 2026, before we improved our infrastructure to 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 10 September. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.
What kind of sites use fflate
134 sites with a known type, all time
Domain endings using fflate
624 sites, all time
- .com 76.0%
- .xyz 5.1%
- .net 2.4%
- .app 2.2%
- .online 2.1%
- .tech 1.9%
- .cloud 1.3%
- .me 1.3%
- .store 1.0%
- .in 0.8%
- .site 0.8%
- .org 0.6%
- .art 0.5%
- .fun 0.5%
Country
Country likely for 24 of 635 sites (3.8%), all time.
How we know
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.
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China 41.7%
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India 16.7%
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United Kingdom 12.5%
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Japan 8.3%
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United States 8.3%
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Canada 4.2%
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Switzerland 4.2%
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South Korea 4.2%
Javascript Library leaders
| Tool | % of sitesall time | % of categoryall time | ||
|---|---|---|---|---|
| #1 | – |
|
14.2% | 34.7% |
| #2 | – |
|
6.7% | 16.3% |
| #3 | – |
|
6.0% | 14.7% |
| #4 | – |
|
4.4% | 10.7% |
| #5 | – |
|
3.4% | 8.3% |
| … | ||||
| #183 | ▼38 |
|
<0.1% | <0.1% |
Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Javascript Library tool.Among September launches it ranked #202 in Javascript Library, down from #164 in August. All 1533 in Javascript Library →
Recent launches using fflate
86 of the 635 sites using fflate are product launches we list individually. The other 549 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works
TOTP Authenticator
Also detected
Showing the most recent 12 of 86.
The StackScope API serves all 635 sites using fflate, filterable and exportable, from £15 a month.