---
title: "JavaScript-Only Links 2026: 13.8% of Internal Links - PageSpeed Matters"
url: https://www.pagespeedmatters.com/resources/data-studies/javascript-only-links
description: "13.8% of the 103,799,125 same-site links on 654,723 top-1M homepages are missing from the raw HTML and only appear after JavaScript runs."
lang: en
---

JavaScript-Only Links 2026: 13.8% of Internal Links (https://www.pagespeedmatters.com/resources/data-studies/javascript-only-links)

13.8% of the 103,799,125 same-site links on 654,723 top-1M homepages are missing from the raw HTML and only appear after JavaScript runs.

Core Web Vitals pass rate: all-JavaScript links vs mostly raw HTML links (homepages with CrUX data)

All links JS-only (38,476) 16.9%

Half or more in raw HTML (459,659) 49.1%

Source: PageSpeed Matters. HTTP Archive crawl, Sept 2026, mobile, top 1M sites, CrUX field data.

Correlation only, not proof that JavaScript links cause slow pages.

Source: JavaScript-Only Links 2026: 13.8% of Internal Links - PageSpeed Matters (https://www.pagespeedmatters.com/resources/data-studies/javascript-only-links)