Using WebPagetest

Learn basic and advanced uses of WebPagetest, the performance measurement tool for optimizing websites. This practical guide shows users new to this tool how run tests and interpret results, and helps experienced users gain a better and more thorough understanding of hidden features in WebPagetest that make testing easier.

Written by WebPagetest power users and performance experts, this book will help web developers and frontend engineers solve the problem of slow sites. Topics include:

• Basic test setup—shows beginners how to get meaningful results
• Advanced test setup—provides another level of technical depth by explaining features not thoroughly documented at webpagetest.org
• Analysis of results—helps you understand of how to interpret test results
• Private instance setup—teaches power users the intricacies of the webpagetest private instance and how it works
• API and external tools—provides a detailed reference for the API and demonstrates tools already using the API to extend WebPagetest

Table of Contents

Part I. Basic Use Cases
Chapter 1. “How fast is my page?”
Chapter 2. “What is slowing down my page?”
Chapter 3. Cache Optimization
Chapter 4. Comparing Tests

Part II. Intermediate Use Cases
Chapter 5. Simulating Real Users
Chapter 6. Mobile Testing
Chapter 7. Scripting Preconditions
Chapter 8. SPOF Testing

Part III. Advanced Use Cases
Chapter 9. API
Chapter 10. Continuous Integration
Chapter 11. Tracking Performance over Time
Chapter 12. Private Instances

Appendix A. Reference guide