Matan · Performance · Payload
Third-party scripts (Performance)
Each extra origin is a DNS, TLS and main-thread cost — the usual INP killer.
Pass condition in our engine: Three or fewer third-party scripts on the tested page.
This Performance check is part of SEO-GEO scoring 2.2.1, last updated 2026-09-18. About 90 percent of the evaluation runs on the HTML we crawl, so you can verify the same pass condition with a free report.
1. Problem description
We count <script src> hosts that are not the page host. More than three third-party scripts on the homepage is a warning.
2. Most common causes
- Marketing pixels added over years.
- Chat widgets loaded for every visitor.
- A/B testing on the critical path.
3. How to fix it
- Consent-mode loading.
- Partytown or a facade for chat.
- Delete unused tags.
Test this check
We fetch only this URL (plus robots.txt / llms.txt at the domain root when the check needs them). We do not crawl the rest of the site like a full report.
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