6 documents tagged with “Lighthouse”
Lighthouse is Google's auditing tool that gives you a score for performance, accessibility, SEO, and best practices. It runs in a lab environment (Chrome DevTools, PageSpeed Insights, CI) and simulates a slow network and an older mobile device. It is ideal for reproducible tests during development, though the results can diverge from what real users experience.
At PageSpeed.ONE we use Lighthouse under the hood of our synthetic tests and display the results alongside CrUX data so you see both sides. The articles below cover how to read the score, when to trust it, and where it diverges from real-user measurements.
How Do We Measure Website Speed?
Discover in this text how we precisely download and process website speed data in the monitoring of pagespeed.one.
Lighthouse Diff: Comparing Two Website Speed Tests
Lighthouse Diff is a tool for visually comparing two Lighthouse reports. It helps identify exactly what has changed on your website – from overall scores to metrics and individual recommendations.
Lighthouse Performance Score (LPS)
The Lighthouse Performance Score (LPS) is a synthetic metric used to assess website speed and performance, provided by the Lighthouse tool.
Test Run Detail Report
In the test run detail, you can see the results of specific testing for one of your website’s URLs.
The Illusion of Speed: How to Hack Lighthouse Scores
Plugins like WP-Optimize, WP Rocket, and Website Speedy can inflate Lighthouse scores by deferring JavaScript. However, this does not enhance user speed and may even be detected by testing tools.
Types of Web Speed Measurements: Synthetic, Chrome UX Report, and Real User Monitoring
Let's clarify the differences between various types of web speed measurements. We’ll discuss synthetic data (“synth”), Google user data (“CrUX”), and data from all users (“RUM”).