Free Speed Index Checker — Measure Visual Load Speed
Check your page's Speed Index score to understand how quickly the visual content of your page loads for users.
Free — no account required for a single check. Sign up for continuous monitoring →
What the Speed Index Checker checks
Speed Index score
Speed Index in ms
Visual progress timeline
Filmstrip of page loading
Comparison to LCP timing
How it works
Runs Lighthouse with visual completeness capture and calculates Speed Index from the visual progress filmstrip.
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.
Speed Index Checker — FAQ
Is the Speed Index Checker free?
Yes — Speed Index Checker is completely free to use. No account required for a single-URL check.
How does the Speed Index Checker work?
Runs Lighthouse with visual completeness capture and calculates Speed Index from the visual progress filmstrip.
What does the Speed Index Checker check?
Speed Index score. Speed Index in ms. Visual progress timeline. Filmstrip of page loading. Comparison to LCP timing.
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.