← All technologies

xdLocalStorage on new websites

JavaScript library that shares localStorage across domains through a hidden iframe bridge.

#961 of 1542 in Javascript Library First seen: Aug 3, 2026 Last seen: Sep 21, 2026 Most recent launch: PushEngage, Sep 21, 2026 Website: github.com

10 sites

8 found by StackScope, 2 via launch platforms

StackScope Wider Web 7 StackScope Discovery (Indie) 1 Product Hunt 1 PeerPush 1
  • StackScope Wider Web 7
  • StackScope Discovery (Indie) 1
  • Product Hunt 1
  • PeerPush 1
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web

xdLocalStorage appeared on 1 new site in the last 30 days.

These figures cover websites that went live since April 2026, not the web as a whole.

Share of new sites using xdLocalStorage

Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.

0.0%
last 7 days
+0.0pp vs prior week
0.0%
30 days to Oct 16
-0.0pp vs 30 days before
10
sites all time
since Aug 2026
xdLocalStorage daily detection trend 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% Aug Sep Oct Jul 27 · 0 / 37242 = 0.0% Jul 28 · 0 / 41893 = 0.0% Jul 29 · 0 / 53573 = 0.0% Jul 30 · 0 / 48278 = 0.0% Jul 31 · 0 / 56049 = 0.0% Aug 1 · 0 / 54898 = 0.0% Aug 2 · 0 / 53856 = 0.0% Aug 3 · 1 / 52620 = 0.0% Aug 4 · 0 / 40708 = 0.0% Aug 5 · 0 / 35352 = 0.0% Aug 6 · 0 / 39150 = 0.0% Aug 7 · 0 / 40251 = 0.0% Aug 8 · 1 / 42806 = 0.0% Aug 9 · 0 / 37786 = 0.0% Aug 10 · 0 / 32325 = 0.0% Aug 11 · 0 / 34562 = 0.0% Aug 12 · 0 / 37141 = 0.0% Aug 13 · 0 / 55476 = 0.0% Aug 14 · 0 / 56760 = 0.0% Aug 15 · 0 / 55912 = 0.0% Aug 16 · 0 / 56272 = 0.0% Aug 17 · 0 / 46231 = 0.0% Aug 18 · 1 / 57139 = 0.0% Aug 19 · 1 / 51768 = 0.0% Aug 20 · 0 / 69067 = 0.0% Aug 21 · 0 / 93891 = 0.0% Aug 22 · 0 / 94208 = 0.0% Aug 23 · 0 / 93619 = 0.0% Aug 24 · 2 / 81724 = 0.0% Aug 25 · 0 / 71549 = 0.0% Aug 26 · 0 / 66870 = 0.0% Aug 27 · 1 / 87845 = 0.0% Aug 28 · 0 / 87921 = 0.0% Aug 29 · 0 / 88077 = 0.0% Aug 30 · 1 / 100676 = 0.0% Aug 31 · 1 / 100257 = 0.0% Sep 1 · 0 / 103467 = 0.0% Sep 2 · 0 / 108917 = 0.0% Sep 3 · 0 / 103287 = 0.0% Sep 4 · 0 / 98544 = 0.0% Sep 5 · 0 / 102862 = 0.0% Sep 6 · 0 / 89278 = 0.0% Sep 7 · 0 / 86117 = 0.0% Sep 8 · 0 / 77972 = 0.0% Sep 9 · 0 / 75528 = 0.0% Sep 10 · 0 / 83700 = 0.0% Sep 11 · 0 / 85579 = 0.0% Sep 12 · 0 / 56773 = 0.0% Sep 13 · 0 / 57998 = 0.0% Sep 14 · 0 / 59233 = 0.0% Sep 15 · 0 / 58191 = 0.0% Sep 16 · 0 / 59080 = 0.0% Sep 17 · 0 / 56800 = 0.0% Sep 18 · 0 / 53087 = 0.0% Sep 19 · 0 / 45279 = 0.0% Sep 20 · 0 / 44763 = 0.0% Sep 21 · 1 / 51670 = 0.0% Sep 22 · 0 / 55410 = 0.0% Sep 23 · 0 / 58320 = 0.0% Sep 24 · 0 / 53473 = 0.0% Sep 25 · 0 / 50769 = 0.0% Sep 26 · 0 / 101522 = 0.0% Sep 27 · 0 / 52140 = 0.0% Sep 28 · 0 / 61125 = 0.0% Sep 29 · 0 / 77867 = 0.0% Sep 30 · 0 / 69725 = 0.0% Oct 1 · 0 / 69250 = 0.0% Oct 2 · 0 / 64812 = 0.0% Oct 3 · 0 / 53787 = 0.0% Oct 4 · 0 / 52065 = 0.0% Oct 5 · 0 / 63713 = 0.0% Oct 6 · 0 / 67611 = 0.0% Oct 7 · 0 / 67691 = 0.0% Oct 8 · 0 / 69356 = 0.0% Oct 9 · 0 / 70442 = 0.0% Oct 10 · 0 / 60699 = 0.0% Oct 11 · 0 / 65613 = 0.0% Oct 12 · 0 / 66678 = 0.0% Oct 13 · 0 / 71090 = 0.0% Oct 14 · 0 / 70802 = 0.0% Oct 15 · 0 / 93934 = 0.0% Oct 16 · 0 / 66943 = 0.0%
Jul 27, 2026 82 days Oct 16, 2026

The shaded area was measured against a different set of sites, so the line can step there without xdLocalStorage itself changing.

Coverage details

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

Domain endings using xdLocalStorage

10 sites, all time

  • .com 70.0%
  • .in 10.0%
  • .tech 10.0%
  • .uk 10.0%

Javascript Library leaders

Tool % of sitesall time % of categoryall time
#1 – jQuery 14.2% 34.5%
#2 – React Router 6.7% 16.2%
#3 – Motion 6.0% 14.6%
#4 – TanStack Router 4.4% 10.7%
#5 – Swiper 3.4% 8.3%
…
#961 ▼650 xdLocalStorage 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 #1250 in Javascript Library, down from #600 in August. All 1542 in Javascript Library → Related categories: UI Library

Recent launches using xdLocalStorage

3 of the 10 sites using xdLocalStorage are product launches we list individually. The other 7 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

Screenshot of PushEngage, a launch using xdLocalStorage PushEngage Sep 21, 2026 · score 9.5 · Marketing Also detected jQuery Adobe Fonts All in One SEO Amazon SES Todd's Mushroom Brew — Functional Mushroom Coffee Alternative Aug 30, 2026 Also detected SvelteKit Svelte Cloudflare Facebook Pixel Screenshot of PushEngage MCP, a launch using xdLocalStorage PushEngage MCP Aug 24, 2026 · score 9.5 · Marketing Also detected jQuery Adobe Fonts All in One SEO Amazon SES

The StackScope API serves all 10 sites using xdLocalStorage, 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.