WebPageTest
WebPageTest is an advanced, open-source tool used for in-depth performance analysis. It provides highly detailed Lab Data by running tests from various geographical locations on real devices with specific connection speeds. Its most valuable feature is the detailed Waterfall Chart, which shows the loading sequence of every resource on a page, making it an essential tool for deep debugging of complex performance bottlenecks.
Related web performance terms
- WKWebView
A WKWebView is the modern browser component that native iOS applications use to display web content directly inside the app. Think of it as a mini-browser window embedded within an app's interface.
- WKWebViewConfiguration
This is the "settings panel" for a WKWebView. It is a configuration object that an iOS app developer uses to set up the properties and behavior of the in-app browser view.
- Waterfall Chart
A waterfall chart is a type of data visualization used in web performance analysis tools to illustrate how a browser loads all the assets on a webpage.
- Web Fonts
Web fonts are fonts that are downloaded by the browser on demand to render text in a specific typeface that is not pre-installed on the user's device.