2 seconds on your MacBook. 8 seconds on your customer’s phone.

Tracks how fast your store loads every day, so you know the moment something slows it down.

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PageSpeed Insights

Perf

A11y

SEO

Mobile

Desktop

Core Web Vitals

LCP

2.4s

Needs work

CLS

0.05

Good

INP

180ms

Good

14-day performance trend

14d agoToday

What it checks

Daily performance scores — Performance, Accessibility, Best Practices, SEO

Core Web Vitals — LCP, CLS, INP per page

Mobile and desktop scores separately

Real-user field data from Google when available

30-day trend tracking with daily data points

PSI-standard colour thresholds (90/50)

What you don't know

A new app slowed your homepage by 3 seconds. You installed it last Tuesday.

Theme updates, new apps, unoptimised images — each one adds a few hundred milliseconds. Individually, nothing. Cumulatively, your mobile customers are waiting 8 seconds for your homepage to load.

Cassian™ runs daily performance audits via Google PageSpeed Insights and tracks your Core Web Vitals over time. When performance drops, you know exactly when it started — and what changed.

How Cassian™ detects this

Cassian runs Google’s PageSpeed Insights API against your pages daily — the same performance lab test Google uses for ranking signals. You get Performance, Accessibility, Best Practices, and SEO scores for both mobile and desktop, plus Core Web Vitals (LCP, CLS, INP). Real-user field data from Google is shown when available for your domain. 30-day trend charts track whether you’re improving or quietly degrading.

With Cassian™