Free Third-Party Impact Analyzer — See Which Scripts Slow You Down
Identify every third-party script on your page, see how much each one costs in load time, and get recommendations to reduce their impact on Core Web Vitals.
Free — no account required for a single check. Sign up for continuous monitoring →
What the Third-Party Impact Analyzer checks
Third-party scripts detected
Per-script blocking time
Per-script byte size
Analytics scripts impact
Ad tag performance impact
Chat widget performance cost
Tag manager overhead
How it works
Loads the page and intercepts all network requests to identify third-party domains, measure their size and blocking time, and categorise their impact on CWV.
Monitor continuously — not just once
This free tool runs a one-off check. AuditJet monitors your site on a schedule — alerting you when scores change, before performance regressions affect your rankings and revenue.
Third-Party Impact Analyzer — FAQ
Is the Third-Party Impact Analyzer free?
Yes — Third-Party Impact Analyzer is completely free to use. No account required for a single-URL check.
How does the Third-Party Impact Analyzer work?
Loads the page and intercepts all network requests to identify third-party domains, measure their size and blocking time, and categorise their impact on CWV.
What does the Third-Party Impact Analyzer check?
Third-party scripts detected. Per-script blocking time. Per-script byte size. Analytics scripts impact. Ad tag performance impact. Chat widget performance cost. Tag manager overhead.
How is this different from Google PageSpeed Insights?
Google PageSpeed Insights is a one-off manual tool. AuditJet adds continuous monitoring, regression alerting, and revenue impact on top of the same performance analysis — so you're notified when scores change, not just when you remember to check.