Lighthouse

Web · Windows · Mac · Linux · Extension

Freedom report

Two barsScore 5.6

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely4 of 6 device platforms
DocumentedPlans, terms and facts published

Lighthouse is ranked #15 of 35 in SEO audit software on Freedom251. It runs on Browser extension, Linux, macOS, Web, Windows.

Compared on SEO audit software

On-page audits: Yes
API access: Yes

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The record

Purpose: Lighthouse is an open-source automated tool for improving web page quality through audits of performance, accessibility, SEO, and other areas.
How it works: Given a URL, Lighthouse runs audits and generates a report with results and references explaining why audits matter and how to address failures.
Run options: Lighthouse can run in Chrome DevTools, from the command line, as a Node module, or through a web UI without installation.
Authentication: The DevTools workflow can audit pages that require authentication; the Chrome extension workflow cannot.
CI: Lighthouse can be integrated into continuous integration systems, and Lighthouse CI can help prevent site regressions.
Audits: The repository lists accessibility, best practices, performance, and SEO as audit categories.
Reports: Lighthouse can produce JSON or HTML reports, and its CLI also supports CSV output.
Customization: Stack packs provide platform-specific recommendations, while plugins let domain experts add audits and report categories.
Sharing: Reports can be viewed online, and the documentation describes sharing them as secret GitHub Gists.
Integrations: The repository lists WebPageTest as able to produce Lighthouse reports alongside its analysis and HTTPArchive as storing Lighthouse results in BigQuery.
Privacy setting: The first CLI run asks whether Lighthouse may anonymously report runtime exceptions, and opting out does not affect its use.
Runtime requirement: The repository states that Lighthouse requires Node 22 (LTS) or later.
Intended users: The documentation describes Lighthouse as guidance intended to be relevant and actionable for web developers.
Source availability: The project is open source and welcomes contributions through its repository.

Where it ranks on Freedom251

Best SEO Audit Software in 2026#15 of 35

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Sources

developer.chrome.com/docs/lighthouse/overview· checked 4 Oct 2026
github.com/GoogleChrome/lighthouse· checked 4 Oct 2026