About Lighthouse
Lighthouse is an open source tool from Google that audits web pages. It checks performance, accessibility, best practices and search engine optimisation.
What it does
You give Lighthouse a page address and it runs a set of audits against that page. It then produces a report with a score for each area and a list of failing checks. Each check links to a reference document that explains why it matters and how to fix it.
Key features
- Performance audits for page load speed
- Accessibility checks for content and navigation
- Best practice checks for code health
- SEO checks for search ranking basics
- Runs from the command line, DevTools or as a Node module
Who it's for
Web developers, site owners and SEO specialists who want a clear list of what to fix on a page. It is also useful for teams that track page quality over time.
Pricing and good to know
Lighthouse is open source under the Apache 2.0 licence and is free to use. It can audit public pages and pages that need a login. It also runs inside Chrome DevTools and PageSpeed Insights, so you can start from a browser without installing anything extra.
Highlights
- Audits page speed and load performance
- Checks accessibility of content and navigation
- Flags best practice problems in page code
- Runs SEO checks on a page
- Runs from the command line or Chrome DevTools
