Understand and improve your site speed

An all-in-one speed monitoring platform with transparent reports and actionable advice to make your sites fast.

The world’s best brands chose Calibre to be their speed companion

Understand what your audience is experiencing. Choose from global test locations, turn off ads or mimic mobile devices effortlessly.

Know about speed regressions before they affect your sales. Always meet your goals.

See the impact of external scripts quickly. Make informed decisions on which tools to use without losing speed.

Paul Irish, Staff Software Engineer

Spot speed changes before releasing to production. Bring accountability to the entire development team.

Create tests and access metrics in a breeze. Export data and integrate with your favourite tools.

Save hours on distilling speed data. Receive beautiful reports on crucial metrics, weekly or monthly.

Never question your speed data. Calibre runs an AI-powered validation engine to ensure the most reliable performance results on the market.

Set up in minutes. Nothing to install.