Websites Powered by WebAssembly

3,063 websites tracked using WebAssembly (Programming languages) · webassembly.org

WebAssembly is a programming language the site's backend is built in. Its official site is webassembly.org. PoweredBy tracks the websites that use WebAssembly across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the programming languages ecosystem.

Usage trend

Core Web Vitals

Median site among 1,230 WebAssembly sites with Chrome UX data, p75 values, Sep 2026.

Top countries

United States 419

Brazil 403

India 278

United Kingdom 263

Indonesia 239

Germany 235

Canada 229

France 213

Sites using WebAssembly by audience country, Chrome UX Report.

Usage by industry

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

Websites using WebAssembly

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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Related Programming languages

• PHP
• Node.js
• Java
• TypeScript
• Ruby