All glossary entries

Page speed (A11)

Third-party script weight

This page explains what this scan check measures. It is not legal advice or a compliance verdict.

What this check is

This check estimates how much of the page script weight comes from third-party hosts.

Why WordPress sites show it

Marketing pixels, chat widgets, and tag managers are common on WordPress lead pages and add bytes outside your theme.

Realistic impact

Heavy third-party weight can slow interaction and increase failure points when a vendor is slow. It is a performance and reliability signal, not a legal conclusion.

How to verify a fix

After removing or deferring unused vendors, re-scan to confirm third-party script weight fell.

Open the step-by-step fix guide

See this check on your site

Run a free scan. If this check appears in your report, you will see the live status for your URL.

Run a free leak scan