Lighthouse
Google's automated page-auditing tool for performance, accessibility, SEO and web best practices.
Published Updated
What it does
- Page-level performance and SEO audits
- Accessibility and best-practice checks
- Command-line reports for automation
Requirements
- A compatible browser or the documented CLI environment
- Access to the page you want to audit
Running costs
No application subscription is required for the open-source tool. Automated runs use your own compute or CI resources.
Limitations
- A page audit is not a complete website crawl.
- Lab results depend on run conditions; this is not a keyword rank tracker.
Sources
Documentation and licensing references. This is a documentation review, not a hands-on benchmark.
Frequently asked questions
What is SEO in Google Lighthouse?
Automated checks for basic search discoverability, including titles, descriptions, crawlability and mobile usability.
Is Google Lighthouse free?
Yes. Lighthouse is free and open source, with browser and command-line workflows.
What is Google Lighthouse used for?
Auditing individual pages for performance, accessibility, SEO and web development best practices.
