Question 1

What is Google PageSpeed Insights?

Accepted Answer

Google PageSpeed Insights (PSI) is a free web tool from Google that analyzes a single URL and returns two types of data: a Lighthouse lab score with improvement recommendations, and CrUX field data showing real-user Core Web Vitals from Chrome users over the past 28 days. It is one of the most widely used diagnostic tools for web performance because it uses the same scoring engine Google uses to evaluate pages for search rankings, and it requires no account or setup.

Question 2

What are the limitations of PageSpeed Insights for production monitoring?

Accepted Answer

PageSpeed Insights has four significant limitations as a production monitoring tool. First, it is entirely manual — every test requires a person to visit the tool and enter a URL. Second, it covers only one page per test, so there is no way to monitor hundreds of URLs simultaneously. Third, it has no alerting capability, so regressions go unnoticed until someone happens to run a test. Fourth, the CrUX field data it shows is a 28-day rolling average, meaning a regression that happened yesterday will not be visible in the data for weeks. AuditJet addresses all four of these gaps.

Question 3

How does AuditJet use PageSpeed Insights data?

Accepted Answer

AuditJet does not pull data from the PageSpeed Insights API directly — it runs its own Lighthouse audits using the same underlying engine. The difference is that AuditJet runs these audits automatically on an hourly schedule for every URL you track, stores the full metric history for up to one year, and compares each result against your historical baseline to identify regressions. AuditJet also layers in Real User Monitoring via a sub-1KB script, giving you current field data rather than a 28-day CrUX average.

Question 4

Can PageSpeed Insights alert me when my score drops?

Accepted Answer

No. PageSpeed Insights has no alerting or notification system of any kind. It only shows you data when you actively go and request it. AuditJet was built specifically to fill this gap: it monitors your pages on a continuous hourly schedule and sends regression alerts via Slack, email, or webhook the moment any tracked metric — LCP, INP, CLS, TTFB, FCP, TBT, or overall Lighthouse score — drops below your configured threshold.

Question 5

Is AuditJet worth using if I already use PageSpeed Insights?

Accepted Answer

Yes, because the two tools serve fundamentally different roles. PageSpeed Insights is a diagnostic snapshot tool — use it when you already know there is a problem and want to investigate it. AuditJet is a continuous monitoring platform — use it to detect problems you do not yet know about, before they damage your search rankings or revenue. Most teams that adopt AuditJet continue to use PageSpeed Insights for deep-dive investigations while letting AuditJet handle the automated watching, alerting, and trend tracking across their full page inventory.

Capability	AuditJet	PageSpeed Insights
Monitoring frequency	Hourly automated scans.	Manual snapshot tests only.
Regression alerts	Active alerts when a page degrades.	No built-in regression alerting.
SEO context	Focuses on ranking and conversion risk.	Lab score insights only.
Real User Monitoring	Captures 75th-percentile LCP & INP from real visitors via a <1 KB script.	CrUX field data shown, but not tracked over time.
AI Fix Blueprints	AI-powered code-level fix blueprints, on demand (WATCHDOG+).	No AI-powered remediation.

AuditJet vs PageSpeed Insights: continuous monitoring wins.

Snapshot vs continuous

Alerts instead of dashboards

Ranking-focused advice

PageSpeed Insights vs AuditJet: the core tradeoff

Keep your audit workflow proactive.