Performance monitoring

Notice the site getting slower before your client does

Two kinds of speed, kept apart on purpose. Server response time comes from every check, from every location. Page load speed (Core Web Vitals, score and page weight) comes from Google PageSpeed once a day.

Get started See pricing From the Pro plan
Page load speed card with performance score, LCP, CLS, TBT, FCP and page weight broken down by images, scripts and fonts

Response time, per location

Median, p95 and p99 per region, up to two years back. The average hides exactly the requests people complain about.

Core Web Vitals from PageSpeed

LCP, CLS, TBT and FCP with the performance score and its trend, plus real-visitor data from Google where the site has enough traffic.

Page weight, by type

Total weight and request count, split into images, scripts, fonts, CSS and HTML, with the change since the previous run, so the 700 kB hero image is visible the next morning. Every request is in a waterfall, grouped into this site and third parties.

PageSpeed is measured by Google from one place, not from our locations, so its numbers are never mixed with response time. Response time is on every plan; PageSpeed starts on a paid plan and runs once a day.

Also in PulseKeeper

Start with three monitors, free

No card, no trial countdown. Add a monitor and it starts being measured before you finish reading this sentence.