Source: https://seerepo.com/r/GoogleChrome/lighthouse
Markdown source: https://seerepo.com/r/GoogleChrome/lighthouse.md
Description: GoogleChrome/lighthouse is a JavaScript repo with 142,901 lines written. lighthouse is built with Preact and uses Firebase and Sentry.

# What's inside GoogleChrome/lighthouse

GoogleChrome/lighthouse is a JavaScript repo with 142,901 lines written. lighthouse is built with Preact and uses Firebase and Sentry.

Its description on GitHub: “Automated auditing, performance metrics, and best practices for the web.”

JavaScript · Apache-2.0 · 31,026 stars · GitHub: https://github.com/GoogleChrome/lighthouse

Read on November 7, 2026, at commit ea58ed1.

## More on this repo

- [What is lighthouse built with?](https://seerepo.com/r/GoogleChrome/lighthouse/built): lighthouse is built with Preact and uses Firebase and Sentry.
- [How much of lighthouse did AI write?](https://seerepo.com/r/GoogleChrome/lighthouse/ai): No AI tool signed any of the 6,448 commits of lighthouse.

## In figures

- 142,901 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 419 source files: The same as the lines: product, tests, schemas and tooling. What’s generated doesn’t count.
- 506 test files: The files that test the code.
- 5 technologies: Each service with the file and line that prove it.

SeeRepo read the facts in its code and kept none of it. AI only helps sort its packages and folders by their names, and never sees its code.

## Frequently asked questions

### What is GoogleChrome/lighthouse?

GoogleChrome/lighthouse is a JavaScript repo with 142,901 lines written. Its description on GitHub: “Automated auditing, performance metrics, and best practices for the web.”

The proof: [its page on GitHub](https://github.com/GoogleChrome/lighthouse)

### What is lighthouse built with?

lighthouse is built with Preact and uses Firebase and Sentry.

The proof: [each service with its file and line](https://seerepo.com/r/GoogleChrome/lighthouse/built)

### What license does lighthouse have?

lighthouse is released under the Apache-2.0 license.

The proof: [its page on GitHub](https://github.com/GoogleChrome/lighthouse)

### How many stars does lighthouse have on GitHub?

lighthouse had 31,026 stars on GitHub on November 7, 2026.

The proof: [its page on GitHub](https://github.com/GoogleChrome/lighthouse)

## Add this badge to your README

It links to this page and updates itself each time SeeRepo reads the repo.

```markdown
[![GoogleChrome/lighthouse on SeeRepo](https://seerepo.com/badge/GoogleChrome/lighthouse.svg)](https://seerepo.com/r/GoogleChrome/lighthouse?de=insignia)
```

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.