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Lighthouse

Automated auditing, performance metrics, and best practices for the web.

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Latest public signals

Page copy revised 25 Oct 2026 from public sources. Refresh checks the live site and, when this entry has a GitHub repository, the latest release.

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Introduction

Lighthouse analyzes web apps and web pages, collecting modern performance metrics and insights on developer best practices.

The latest GitHub release listed on 25 Oct 2026 was v13.5.0, published 2026-09-18.

Features

These items are quoted from public documentation fetched on 25 Oct 2026. Taken from repository README headings.

  1. Using Lighthouse in Chrome DevTools: Lighthouse is integrated directly into the Chrome DevTools, under the “Lighthouse” panel.
  2. Using the Chrome extension: The Chrome extension was available prior to Lighthouse being available in Chrome Developer Tools, and offers similar functionality.
  3. Using the Node CLI: The Node CLI provides the most flexibility in how Lighthouse runs can be configured and reported. Users who want more advanced usage, or want to run Lighthouse in an automated fashion should use the Node CLI.
  4. Using the Node module: You can also use Lighthouse programmatically with the Node module.
  5. Online Viewer: Running Lighthouse with the –output=json flag generates a JSON dump of the run. You can view this report online by visiting and dragging the file onto the app. You can also use the “Export” button from the top of any Lighthouse HTML report and open the report in the Lighthouse Viewer.
  6. Docs & Recipes: Useful documentation, examples, and recipes to get you started.

Pros

Points stated in the public sources fetched on 25 Oct 2026:

  1. Published license: The GitHub repository lists Apache License 2.0 (Apache-2.0).
  2. Repository topics: The repository’s GitHub topics include audit, best-practices, chrome-devtools, developer-tools, performance-analysis, performance-metrics, pwa, web.

Cons

The pages fetched on 25 Oct 2026 do not publish a limitations list. That absence is not evidence that the tool has no drawbacks. Current issues are tracked at https://github.com/GoogleChrome/lighthouse/issues.

The repository README includes this example (from “audits all URLs in ./urls.txt and saves reports into the existing ./reports directory”):


##### Lifecycle Examples
You can run a subset of Lighthouse's lifecycle if desired via the `--gather-mode` (`-G`) and  `--audit-mode` (`-A`) CLI flags.

Resources:

Pricing

The repository lists Apache License 2.0 (Apache-2.0). No public price was found on the pages fetched on 25 Oct 2026. This rewrite does not guess a number. Check the official website before treating the tool as free or paid.

The fetched pages do not name a target audience. Decide fit from the official description and the feature list above.

Conclusion

Lighthouse is summarized by its public description as: “Automated auditing, performance metrics, and best practices for the web.”.

The latest GitHub release listed was v13.5.0, published 2026-09-18.

This page was rebuilt on 25 Oct 2026 from developer.chrome.com, github.com. It keeps only what those pages stated. Confirm the current product, license, and price on the official site before you adopt it.