Calibre

Calibre is a web performance monitoring platform that combines real user monitoring, Google CrUX data, and synthetic page speed tests to help teams identify and fix website speed issues. It is designed for developers, engineering teams, and operations teams in mid-market and enterprise companies. The platform is delivered as a SaaS solution, offering a unified view of performance data to prioritize fixes.

Key features

• Real User Monitoring (RUM)
• Chrome User Experience Report (CrUX) monitoring
• Synthetic page speed testing
• Third-party impact analysis
• Core Web Vitals assessment
• Performance budgets
• Pull request reviews
• Test profiles for different conditions
• Team insights email reports
• Google Lighthouse integration