Teams
Collaborate and share speed reports
Performance Budgets
Set actionable goals and meet them
Test Profiles
Understand real-world conditions
Pull Request Reviews
See performance directly in GitHub
Node.js API
Build integrations with developer-first APIs
Third Party Tracking
Trace the impact of third party scripts
Insights Report
Performance reporting in your inbox
All Features
Explore how Calibre can help you
Company Plan
Personalised service and flexible capacity built for larger teams
SEOs
Avoid losing search engine ranking
Agencies
Guarantee speed to your clients
Product Teams
Delight your customers with speed
Developers
Manipulate data to your needs
Core Web Vitals Checker
The easiest way to check if your site passes Core Web Vitals assessment
Release Notes
Monthly summary of new features and improvements to Calibre
Performance Newsletter
Best source of up-to-date web platform news
Help Docs
How to articles on making the most out of Calibre
Open Source
Our free performance tools and libraries for a faster web
Product
Use Cases
Company & Resources
An up-to-date web platform news email to make you a better performance advocate. See a sample of what you might get.
We will never send spam or share your details with third parties.