Calibre Documentation

Calibre’s website performance monitoring platform combines:

  • Real User Monitoring (RUM) to capture and understand the experience of real visitors to your site.
  • Fully automated collection of Core Web Vitals, direct from Google’s Chrome User Experience Report (CrUX) dataset. The same dataset used in search ranking assessment.
  • Configurable Synthetic testing to give you a complete picture of how your sites perform.
  • A powerful API and CLI to integrate performance monitoring into your workflow and automate data collection.

Use Calibre to monitor your sites, competitors, catch regressions before they reach users, and understand how real visitors experience your site. Start your free 15-day trial today.

Get started#

Quick start

Monitor your first site with this walk-through.

Real User Monitoring

See exactly where your website or app is slowing users down.

Chrome User Experience Report

Monitor your Site's performance from Google’s perspective.

Synthetic Monitoring

Test and audit your website with automated checks.

Metrics

Learn about performance metrics collected by Calibre.

Command line interface

Manage your workspace and performance data in terminal.

Node.js API

Integrate with Calibre’s API and data pipeline.

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