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Lighthouse can be run in Chrome DevTools, from the command line, or as a Node module. When giving Lighthouse a URL to audit, it runs a series of audits against the page and then generates a report on how well the page did. From there, the failing audits can be used as indicators on how to improve the page. Each audit has a reference doc explaining why the audit is important, as well as how to fix it.
The scoring system and suggestions of improvement that Google Lighthouse generates make the best “barometer” for Digital Marketing Concepts to:
Lighthouse analyzes how quickly a website or app loads and how quickly users can access or view the content.
Lighthouse’s accessibility audits to examine how well a website or app can be used by people with disabilities. Tests on important elements, like buttons or links determine whether they are sufficiently described or whether images have been assigned an alt-attribute so the visual content can also be described by screen readers for visually impaired users.
Lighthouse checks highlight opportunities to improve the overall code health of your web app.
Does the website register a service worker? Does it work offline with internet access? Does it return a 200 error? These audits were how Lighthouse began, but are now just one of the five audit categories and only of real importance to Progressive Web App providers.
Lighthouse runs various tests to establish how well a website or app can be crawled by search engines and displayed in the search results. Lighthouse tests that Google describes as “SEO” are extremely limited; anyone with a website or app that does not achieve a maximum score should make the required fixes. Once changes have been made, search engine optimization offers huge potential for additional improvements, which should certainly be explored.