Websites Powered by Howler.js

72,131 websites tracked using Howler.js (JavaScript libraries) · howlerjs.com

Howler.js is a JavaScript library used to add functionality to web pages. Its official site is howlerjs.com. PoweredBy tracks the websites that use Howler.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 19,333 Howler.js sites with Chrome UX data, p75 values, Sep 2026.

Top countries

United States 6,958

India 3,598

United Kingdom 3,452

Germany 3,014

Canada 2,899

France 2,746

Brazil 2,739

Spain 2,389

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

Usage by industry

Share of each industry's websites with a detected stack that use Howler.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 Howler.js in recent crawls. Only 372 domains worldwide score 9 or higher.

Websites using Howler.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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