Deliver stellar experiences to everyone

Monitor and audit web performance.
Make meaningful improvements where it matters.

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

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

Know about performance 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 performance 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 performance data. Receive beautiful reports on crucial metrics, weekly or monthly.

Never question your performance 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.