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
Simulate real-world conditions
Understand what your audience is experiencing. Choose from global test locations, turn off ads or mimic mobile devices effortlessly.
Stay on track with budgets
Spot performance regressions before they affect your sales. Celebrate your wins.
Understand the impact of third party code
See the impact of external scripts quickly. Make informed decisions on which tools to use without losing speed.
“Calibre offers first-class support for web performance monitoring.”
Addy Osmani, Engineering Manager
Review changes in Pull Requests
Spot performance changes before releasing to production. Bring accountability to the entire development team.
Automate your performance system
Create tests and access metrics in a breeze. Export data and integrate with your favourite tools.
Receive regular performance reports
Save hours on distilling performance data. Receive beautiful reports on crucial metrics, weekly or monthly.
Be confident of results
Never question your performance data. Calibre runs an AI-powered validation engine to ensure the most reliable performance results on the market.
Start your free 15-day trial
Set up in minutes. Nothing to install.