lighthouse
google's automated web auditing tool
TLDR
Audit a URL
$ lighthouse [https://example.com]
Output to specific file$ lighthouse [https://example.com] --output-path [report.html]
Output as JSON$ lighthouse [https://example.com] --output json
Audit specific categories$ lighthouse [https://example.com] --only-categories=performance,accessibility
Use headless Chrome$ lighthouse [https://example.com] --chrome-flags="--headless"
Set viewport$ lighthouse [https://example.com] --screenEmulation.width=[1920]
SYNOPSIS
lighthouse url [options]
DESCRIPTION
lighthouse is Google's automated web auditing tool. Tests performance, accessibility, best practices, SEO, and progressive web app features. Generates detailed reports with improvement recommendations. Simulates mobile devices by default.
PARAMETERS
--output format
Output format (html, json, csv).--output-path file
Path to save report.--only-categories list
Categories to audit.--chrome-flags flags
Chrome launch flags.--preset preset
Audit preset (desktop, perf).--view
Open report in browser.--quiet
Suppress output.