lighthouse

Analyzes web applications and web pages, collecting modern performance metrics and insights on developer best practices.

• Generate an HTML report for a specific website and save it to a file in the current directory:

lighthouse {https://example.com}

• Generate a JSON report and print it:

lighthouse --output {json} {https://example.com}

• Generate a JSON report and save it to a specific file:

lighthouse --output {json} --output-path {path/to/file.json} {https://example.com}

• Generate a report using the browser in headless mode without logging to stdout:

lighthouse --quiet --chrome-flags="{--headless}" {https://example.com}

• Generate a report, using the HTTP header key/value pairs in the specified JSON file for all requests:

lighthouse --extra-headers={path/to/file.json} {https://example.com}

• Generate a report for specific categories only:

lighthouse --only-categories={performance,accessibility,best-practices,seo,pwa} {https://example.com}

• Generate a report with device emulation and all throttling disabled:

lighthouse --screenEmulation.disabled --throttling-method={provided} --no-emulatedUserAgent {https://example.com}

• Display help:

lighthouse --help

Copyright © 2014—present the tldr-pages team and contributors.

This work is licensed under the Creative Commons Attribution 4.0 International License (CC-BY).