Performance Budgets
Set actionable goals and meet them
Third Party Tracking
Trace the impact of third party scripts
Test Profiles
Understand real-world conditions
Insights Report
Performance reporting in your inbox
Pull Request Reviews
See performance directly in GitHub
All Features
Explore how Calibre can help you
Calibre for Enterprise
Helping large organisations implement strategies for performance
Command Line Interface
Interact with Calibre straight from your console
Node.js API
Explore our powerful JavaScript API
Help Docs
How to articles on making the most out of Calibre
Release Notes
Monthly summary of new features and improvements to Calibre
Performance Newsletter
Best source of up-to-date web platform news
Open Source
Our free performance tools and libraries for a faster web
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