fflate on new websites

High-performance JavaScript compression library for zlib, gzip, and zip.

#183 of 1533 in Javascript Library First seen: Jul 8, 2026 Last seen: Oct 15, 2026 Most recent launch: Image to PDF Converter: PNG, JPG, WebP to PDF Free | PDFToast, Oct 15, 2026 Website: github.com

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
  • 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.

Stackdar alerts

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 work

Share 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.

0.0%
last 7 days
+0.0pp vs prior week
0.0%
30 days to Oct 14
-0.0pp vs 30 days before
635
sites all time
since Jul 2026
fflate daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 10 September 2026: we improved our infrastructure to index new sites much sooner, often on the day they go live, so the cohort this share is measured against changes here. 5% 2% 0% Jul Aug Sep Oct Weekly averages before this point, daily after. Jul 17 · 3 / 21976 = 0.0% Jul 18 · 0 / 24273 = 0.0% Jul 19 · 1 / 27238 = 0.0% Jul 20 · 2 / 23828 = 0.0% Jul 21 · 2 / 22931 = 0.0% Jul 22 · 3 / 24338 = 0.0% Jul 23 · 2 / 18107 = 0.0% Jul 24 · 0 / 13981 = 0.0% Jul 25 · 0 / 9563 = 0.0% Jul 26 · 4 / 21727 = 0.0% Jul 27 · 10 / 37224 = 0.0% Jul 28 · 6 / 41915 = 0.0% Jul 29 · 2 / 53566 = 0.0% Jul 30 · 8 / 48254 = 0.0% Jul 31 · 11 / 56102 = 0.0% Aug 1 · 11 / 54964 = 0.0% Aug 2 · 11 / 53898 = 0.0% Aug 3 · 12 / 52676 = 0.0% Aug 4 · 11 / 40718 = 0.0% Aug 5 · 9 / 35364 = 0.0% Aug 6 · 5 / 39175 = 0.0% Aug 7 · 8 / 40304 = 0.0% Aug 8 · 4 / 42864 = 0.0% Aug 9 · 3 / 37817 = 0.0% Aug 10 · 5 / 32398 = 0.0% Aug 11 · 1 / 34594 = 0.0% Aug 12 · 4 / 37162 = 0.0% Aug 13 · 8 / 55537 = 0.0% Aug 14 · 3 / 57025 = 0.0% Aug 15 · 2 / 56125 = 0.0% Aug 16 · 4 / 55737 = 0.0% Aug 17 · 13 / 44123 = 0.0% Aug 18 · 2 / 56591 = 0.0% Aug 19 · 0 / 51743 = 0.0% Aug 20 · 23 / 69217 = 0.0% Aug 21 · 15 / 94382 = 0.0% Aug 22 · 41 / 94895 = 0.0% Aug 23 · 28 / 94181 = 0.0% Aug 24 · 26 / 82171 = 0.0% Aug 25 · 21 / 71963 = 0.0% Aug 26 · 7 / 67318 = 0.0% Aug 27 · 3 / 88263 = 0.0% Aug 28 · 3 / 88341 = 0.0% Aug 29 · 9 / 88766 = 0.0% Aug 30 · 3 / 101451 = 0.0% Aug 31 · 7 / 100773 = 0.0% Sep 1 · 7 / 104083 = 0.0% Sep 2 · 10 / 109879 = 0.0% Sep 3 · 8 / 104072 = 0.0% Sep 4 · 5 / 99132 = 0.0% Sep 5 · 5 / 103491 = 0.0% Sep 6 · 7 / 89943 = 0.0% Sep 7 · 13 / 86692 = 0.0% Sep 8 · 6 / 78390 = 0.0% Sep 9 · 6 / 76026 = 0.0% Sep 10 · 8 / 84109 = 0.0% Sep 11 · 8 / 86260 = 0.0% Sep 12 · 7 / 57187 = 0.0% Sep 13 · 8 / 58397 = 0.0% Sep 14 · 8 / 59569 = 0.0% Sep 15 · 2 / 58660 = 0.0% Sep 16 · 3 / 59100 = 0.0% Sep 17 · 9 / 57155 = 0.0% Sep 18 · 2 / 53456 = 0.0% Sep 19 · 1 / 45580 = 0.0% Sep 20 · 4 / 44956 = 0.0% Sep 21 · 5 / 51898 = 0.0% Sep 22 · 3 / 55683 = 0.0% Sep 23 · 6 / 58657 = 0.0% Sep 24 · 7 / 53791 = 0.0% Sep 25 · 6 / 51135 = 0.0% Sep 26 · 2 / 101886 = 0.0% Sep 27 · 8 / 52339 = 0.0% Sep 28 · 2 / 61451 = 0.0% Sep 29 · 8 / 78429 = 0.0% Sep 30 · 4 / 70054 = 0.0% Oct 1 · 1 / 69437 = 0.0% Oct 2 · 5 / 64832 = 0.0% Oct 3 · 3 / 53942 = 0.0% Oct 4 · 4 / 52377 = 0.0% Oct 5 · 4 / 64119 = 0.0% Oct 6 · 6 / 68023 = 0.0% Oct 7 · 1 / 68184 = 0.0% Oct 8 · 7 / 69728 = 0.0% Oct 9 · 10 / 70584 = 0.0% Oct 10 · 3 / 61414 = 0.0% Oct 11 · 6 / 66134 = 0.0% Oct 12 · 5 / 66878 = 0.0% Oct 13 · 8 / 70815 = 0.0% Oct 14 · 10 / 70242 = 0.0%
Jun 15, 2026 90 days Oct 14, 2026

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.

How StackScope detects technologies

What kind of sites use fflate

134 sites with a known type, all time

Productivity
20.9%
E-commerce
18.7%
Education
9.0%
Games
9.0%
Content
6.7%
Health
6.7%
Social
6.0%
AI
3.7%
Design
3.7%
Finance
2.2%
Marketing
2.2%
Crypto
0.8%

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.

  • China China 41.7%
  • India India 16.7%
  • United Kingdom United Kingdom 12.5%
  • Japan Japan 8.3%
  • United States United States 8.3%
  • Canada Canada 4.2%
  • Switzerland Switzerland 4.2%
  • South Korea South Korea 4.2%

Javascript Library leaders

Tool % of sitesall time % of categoryall time
#1 – jQuery 14.2% 34.7%
#2 – React Router 6.7% 16.3%
#3 – Motion 6.0% 14.7%
#4 – TanStack Router 4.4% 10.7%
#5 – Swiper 3.4% 8.3%
…
#183 ▼38 fflate Current page <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 → Related categories: UI Library

Often used with

Tool Sites vs all new sites
Ultron 467 8825x
Fuse.js 467 2714x
Alibaba Analytics 453 1622x
Alibaba Cloud CDN 316 1603x
Tengine 453 1118x

Tools that turn up far more often on fflate sites than on new sites in general, and how many times as common each one is there.

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

Showing the most recent 12 of 86.

The StackScope API serves all 635 sites using fflate, filterable and exportable, from £15 a month.

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.