Track, understand and improve performance metrics

Calibre uses real Google Chrome instances to test in a clean room environment. Turn on. Receive metrics instantly.

Nothing to install, start tracking in minutes

Setup in minutes by typing in a few fields and clicking a couple of buttons.

Automatic Snapshots are taken daily, or post-deploy using the Snapshot API.

Google Lighthouse

Google Lighthouse built-in
NEW

Get continuous Progressive Web Application audits with Google’s cutting edge performance suite. Follow up on best practice and accessibility guidelines.

Automated and distributed monitoring

Test from all corners of the globe and discover where your users are suffering the most.

Automated and distributed monitoring
Real-world device and connection emulation

Real-world device and connection emulation

Mimic the conditions your customers face with Test Profiles. Make direct performance comparisons and act on them.

User-focused metrics

Visually Complete and Time to Interactive help to determine how quickly users can interact with the interface, not when scripts finish loading in the background. View up to six months of metric history and pinpoint trends right away.

Metrics in-depth

Request and asset analysis

Dive into a detailed view of the assets your sites deliver. Discover the performance footprint of ads, imagery or external scripts with ease.

Performance Budgets

Set budgets against any metric Calibre records—no matter the page, device or connection profile. When a budget is blown (or met), you’ll be the first to hear about it.

Performance Budgets
Realtime notifications and alerts

Realtime notifications and alerts

Keep an eye on crucial aspects of performance. Get notified through email or Slack instantly.

“Calibre has been the answer to clients’ "perf tooling and testing" questions that I used to shrug off with "well there’s a Grunt task that sorta works."”
Mat Marquis of Bocoup

Mat Marquis, Inclusive Web Developer at Bocoup

Start your free trial

Nothing to install, 14-day free trial, cancel anytime. Set up performance tracking in minutes.