Websites Powered by Immutable.js

15,506 websites tracked using Immutable.js (JavaScript libraries) · facebook.github.io

Immutable.js is a JavaScript library used to add functionality to web pages. Its official site is facebook.github.io. PoweredBy tracks the websites that use Immutable.js across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the javascript libraries ecosystem.

Usage trend

Core Web Vitals

Median site among 1,888 Immutable.js sites with Chrome UX data, p75 values, Sep 2026.

Top countries

United States 1,038

Canada 560

United Kingdom 182

India 152

Portugal 140

Germany 133

Spain 124

France 120

Sites using Immutable.js by audience country, Chrome UX Report.

Usage by industry

Share of each industry's websites with a detected stack that use Immutable.js; industries come from what sites declare in their own structured data.

Top sites by authority

The share of the web's most authoritative domains, by Open Page Rank tier, seen running Immutable.js in recent crawls. Only 372 domains worldwide score 9 or higher.

Websites using Immutable.js

Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.

Download top 10,000 as CSV (zip) →

Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).

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