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Adobe Flash (AC_RunActiveContent embed script) on new websites

Legacy Adobe JavaScript helpers for embedding Flash content in a page and checking the visitor's Flash Player version.

1,516 sites via All sites #7 of 485 in Developer Tools First seen: Jul 8, 2026 Last seen: Oct 16, 2026 Most recent launch: Run Analytics, Sep 22, 2026

Found via: StackScope Discovery (Indie) 6 · StackScope Wider Web 1,510

View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web

Adobe Flash (AC_RunActiveContent embed script) appeared on about 160 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 Adobe Flash (AC_RunActiveContent embed script).

161 new sites with Adobe Flash (AC_RunActiveContent embed script) first seen in the last 30 days.

Stackdar watches every launch we detect and sends you the ones using Adobe Flash (AC_RunActiveContent embed script), by email, Slack or webhook. On every plan, from £15 a month.

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Share of new sites using Adobe Flash (AC_RunActiveContent embed script)

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 15
-0.0pp vs 30 days before
1,516
sites all time
since Jul 2026
Adobe Flash (AC_RunActiveContent embed script) 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 18 · 0 / 24723 = 0.0% Jul 19 · 0 / 27645 = 0.0% Jul 20 · 0 / 23868 = 0.0% Jul 21 · 0 / 22945 = 0.0% Jul 22 · 0 / 24372 = 0.0% Jul 23 · 0 / 18101 = 0.0% Jul 24 · 0 / 13980 = 0.0% Jul 25 · 0 / 9550 = 0.0% Jul 26 · 1 / 21752 = 0.0% Jul 27 · 9 / 37234 = 0.0% Jul 28 · 13 / 41886 = 0.0% Jul 29 · 23 / 53564 = 0.0% Jul 30 · 29 / 48258 = 0.1% Jul 31 · 21 / 56048 = 0.0% Aug 1 · 20 / 54890 = 0.0% Aug 2 · 23 / 53852 = 0.0% Aug 3 · 15 / 52615 = 0.0% Aug 4 · 8 / 40704 = 0.0% Aug 5 · 11 / 35348 = 0.0% Aug 6 · 2 / 39149 = 0.0% Aug 7 · 0 / 40250 = 0.0% Aug 8 · 14 / 42805 = 0.0% Aug 9 · 6 / 37777 = 0.0% Aug 10 · 20 / 32324 = 0.1% Aug 11 · 12 / 34557 = 0.0% Aug 12 · 6 / 37135 = 0.0% Aug 13 · 22 / 55469 = 0.0% Aug 14 · 22 / 56755 = 0.0% Aug 15 · 13 / 55907 = 0.0% Aug 16 · 17 / 56270 = 0.0% Aug 17 · 13 / 45809 = 0.0% Aug 18 · 20 / 56662 = 0.0% Aug 19 · 3 / 51684 = 0.0% Aug 20 · 21 / 68977 = 0.0% Aug 21 · 38 / 93849 = 0.0% Aug 22 · 57 / 94192 = 0.1% Aug 23 · 41 / 93593 = 0.0% Aug 24 · 56 / 81709 = 0.1% Aug 25 · 31 / 71532 = 0.0% Aug 26 · 29 / 66856 = 0.0% Aug 27 · 33 / 87835 = 0.0% Aug 28 · 48 / 87905 = 0.1% Aug 29 · 36 / 88063 = 0.0% Aug 30 · 53 / 100668 = 0.1% Aug 31 · 55 / 100238 = 0.1% Sep 1 · 53 / 103415 = 0.1% Sep 2 · 56 / 108914 = 0.1% Sep 3 · 54 / 103276 = 0.1% Sep 4 · 57 / 98533 = 0.1% Sep 5 · 59 / 102853 = 0.1% Sep 6 · 42 / 89272 = 0.0% Sep 7 · 31 / 86119 = 0.0% Sep 8 · 27 / 77965 = 0.0% Sep 9 · 19 / 75515 = 0.0% Sep 10 · 22 / 83653 = 0.0% Sep 11 · 22 / 85552 = 0.0% Sep 12 · 21 / 56764 = 0.0% Sep 13 · 23 / 57989 = 0.0% Sep 14 · 7 / 59224 = 0.0% Sep 15 · 7 / 58180 = 0.0% Sep 16 · 4 / 58965 = 0.0% Sep 17 · 6 / 56747 = 0.0% Sep 18 · 4 / 53080 = 0.0% Sep 19 · 7 / 45270 = 0.0% Sep 20 · 4 / 44755 = 0.0% Sep 21 · 4 / 51661 = 0.0% Sep 22 · 5 / 55402 = 0.0% Sep 23 · 5 / 58308 = 0.0% Sep 24 · 2 / 53459 = 0.0% Sep 25 · 5 / 50759 = 0.0% Sep 26 · 6 / 101516 = 0.0% Sep 27 · 6 / 52131 = 0.0% Sep 28 · 1 / 61107 = 0.0% Sep 29 · 3 / 77850 = 0.0% Sep 30 · 3 / 69709 = 0.0% Oct 1 · 2 / 69222 = 0.0% Oct 2 · 6 / 64730 = 0.0% Oct 3 · 3 / 53733 = 0.0% Oct 4 · 7 / 52052 = 0.0% Oct 5 · 6 / 63687 = 0.0% Oct 6 · 5 / 67585 = 0.0% Oct 7 · 7 / 67656 = 0.0% Oct 8 · 1 / 69310 = 0.0% Oct 9 · 8 / 70361 = 0.0% Oct 10 · 5 / 60636 = 0.0% Oct 11 · 6 / 65593 = 0.0% Oct 12 · 14 / 66628 = 0.0% Oct 13 · 15 / 70942 = 0.0% Oct 14 · 4 / 70655 = 0.0% Oct 15 · 7 / 93489 = 0.0%
Jun 15, 2026 90 days Oct 15, 2026

The shaded areas were measured against a different set of sites, so the line can step there without Adobe Flash (AC_RunActiveContent embed script) 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 Adobe Flash (AC_RunActiveContent embed script)

234 sites with a known type, all time

Productivity
37.2%
Education
20.1%
Social
11.5%
AI
5.6%
Health
5.1%
E-commerce
4.3%
Finance
4.3%
Content
3.9%
Games
3.4%
Developer Tools
2.6%
Marketing
1.3%
Design
0.4%
Hiring & HR
0.4%

Domain endings using Adobe Flash (AC_RunActiveContent embed script)

1,514 sites, all time

  • .com 90.0%
  • .uk 1.3%
  • .org 0.9%
  • .net 0.9%
  • .in 0.7%
  • .ca 0.7%
  • .it 0.6%
  • .xyz 0.5%
  • .br 0.4%
  • .pl 0.3%
  • .de 0.3%
  • .se 0.3%
  • .site 0.3%

Country

Country known for 566 of 1,516 sites (37.3%), 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. We count a country only where it is stated plainly enough to be sure: a governing-law clause or company registration number on a legal page, a phone country code, or a country domain ending. Sites that publish none are not counted at all.

  • South Korea South Korea 98.4%
  • Poland Poland 0.4%
  • Sweden Sweden 0.4%
  • Brazil Brazil 0.2%
  • Canada Canada 0.2%
  • France France 0.2%
  • United Kingdom United Kingdom 0.2%
  • Slovakia Slovakia 0.2%

Developer Tools leaders

Tool % of sitesall time % of categoryall time
#1 – Vite 23.8% 98.5%
#2 – pywb (Wayback Machine toolkit) 0.1% 0.3%
#3 ▲1 Instant.page 0.1% 0.2%
#4 ▼1 Weglot <0.1% 0.2%
#5 ▲2 Rack CORS <0.1% 0.1%
…
#7 ▼2 Adobe Flash (AC_RunActiveContent embed script) 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 Developer Tools tool.Among September launches it ranked #7 in Developer Tools, down from #5 in August. All 485 in Developer Tools →

Often used with

Tool Sites vs all new sites
jsSHA 1,243 3736x
Kakao Tiara 1,249 3580x
SWFObject 1,258 3299x
Tistory 1,249 2961x
Kakao SDK 1,249 1681x

Tools that turn up far more often on Adobe Flash (AC_RunActiveContent embed script) sites than on new sites in general, and how many times as common each one is there.

Recent launches using Adobe Flash (AC_RunActiveContent embed script)

6 of the 1,516 sites using Adobe Flash (AC_RunActiveContent embed script) are product launches we list individually. The other 1,510 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

Run Analytics Sep 22, 2026 Also detected Svelte jQuery cdnjs Cloudflare DNS 가격의 지도 Sep 11, 2026 Also detected Svelte jQuery cdnjs Cloudflare DNS 부기맨 | 책을 쉽게 Sep 10, 2026 · Productivity Also detected Svelte jQuery cdnjs Cloudflare FinCalcNote | 금융계산노트 Sep 9, 2026 · Productivity Also detected Svelte jQuery cdnjs Google AdSense Untitled site Aug 25, 2026 · Education Also detected Svelte jQuery cdnjs Cloudflare 미래를 준비하는 자 Aug 15, 2026 Also detected Svelte jQuery cdnjs Google Ads

The StackScope API serves all 1,516 sites using Adobe Flash (AC_RunActiveContent embed script), 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.