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Introduction to
WebPageTest
Enhancing Frontend Performance through Testing
Date and Presenter Name
Agenda
• Quickbyte: Overview of WebPageTest
• Setting Up a Private Instance on Windows
• WPT Scripting Overview and Browser Developer Tools
What is WebPageTest?
• Free and open-source tool for website performance testing
• Developed by Patrick Meenan, Google
• Available as a hosted service and private instance
Key Features of WebPageTest
• Detailed performance reports (e.g., load time, speed index)
• Supports various browsers and locations
• Video capture of the loading process
• Waterfall charts and filmstrip views
Why Use WebPageTest?
• Identify performance bottlenecks
• Analyze frontend elements and render paths
• Perform comparisons across different platforms and devices
• Integrate with CI/CD pipelines for automated testing
Private Instance Setup
• Performance testing on a local Windows environment
Prerequisites
• Software Requirements:
• Apache, PHP (7.x+), Python, Node.js, ImageMagick
• Geckodriver, FFmpeg
Downloading Server and Agent
• WebPageTest Server and Agent: Download from GitHub
Environment Variables
• Paths to Set:
• PHP, WebPageTest Agent & Server, ImageMagick
• Geckodriver, FFmpeg
Server Configuration
• Modify configuration files: locations.ini, profiles.ini,
settings.ini
PHP Configuration
• PHP.ini Adjustments:
• Required modules enabled: GD, zip, zlib, mbstring, curl
• Set memory limitations and file sizes
Apache Configuration
• Configure ServerRoot, DSO, and DocumentRoot in
httpd.conf
Running the Server and Agent
• Steps to start services and verify setup
• Verify installation via http://localhost/install/

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