# Lighthouse

> Google Chrome DevTools feature

**Wikidata**: [Q104217227](https://www.wikidata.org/wiki/Q104217227)  
**Source**: https://4ort.xyz/entity/lighthouse

## Key Facts
- **License:** Apache Software License 2.0
- **Part of:** Chrome DevTools
- **Website:** https://developers.google.com/web/tools/lighthouse
- **Source Code Repository:** https://github.com/GoogleChrome/lighthouse
- **NPM Package:** `lighthouse`
- **Chrome Web Store Extension ID:** `blipmdconlkpinefehnmjammfjpmpbjk`
- **First Recorded Version:** 1.1.1, released on August 6, 2016.
- **Subsequent Early Versions:** Included releases 1.1.2 (Aug 6, 2016), 1.1.3 (Sep 6, 2016), 1.1.4 (Sep 19, 2016), 1.1.5 (Oct 10, 2016), 1.1.7 (Nov 1, 2016), 1.2.0 (Nov 17, 2016), 1.2.1 (Nov 23, 2016), 1.2.2 (Nov 30, 2016), and 1.3.0 (Dec 20, 2016).
- **Classification:** Software feature, software, Google Chrome extension, and console application.
- **Entity Type:** Software (non-tangible executable component of a computer).

## FAQs
### Q: What is Lighthouse?
A: Lighthouse is a Google Chrome DevTools feature classified as software, a console application, and a browser extension. It is designed to audit and improve the quality of web pages.

### Q: Is Lighthouse free to use?
A: Yes, Lighthouse is available under the Apache Software License 2.0. Its source code is publicly accessible via GitHub.

### Q: How can Lighthouse be accessed?
A: Lighthouse can be accessed as a feature within Chrome DevTools, as a Google Chrome extension (via its specific extension ID), or as a console application through its NPM package.

### Q: When was the first version of Lighthouse released?
A: Based on available records, version 1.1.1 was released on August 6, 2016.

## Why It Matters
Lighthouse serves as a critical component in the web development ecosystem by providing developers with automated auditing tools directly within their browser environment. As a feature integrated into Chrome DevTools, it lowers the barrier to entry for performance testing and accessibility compliance, allowing for immediate feedback during the development process.

Its availability as an open-source project under the Apache Software License 2.0 encourages community contribution and transparency. The tool's diverse implementation methods—ranging from a browser extension to a command-line console application—ensure it can fit into various automated workflows and continuous integration pipelines. This flexibility helps standardize web quality metrics across the industry, making it easier for teams to maintain consistent performance and accessibility standards.

## Notable For
- **Integration with Chrome DevTools:** Directly embedded into Google's browser developer tools, making it instantly accessible to millions of developers without separate installation.
- **Open Source Transparency:** Fully open-source under the Apache Software License 2.0, allowing for community inspection and contribution via GitHub.
- **Versatile Deployment:** Available not just as a DevTools feature, but also as a standalone Chrome extension and a console application via NPM.
- **Rapid Early Iteration:** Demonstrated active development in its early stages, releasing multiple updates (versions 1.1.1 through 1.3.0) within a span of five months in 2016.

## Body

### Overview and Classification
Lighthouse is a software entity categorized as a "software feature," "software," "Google Chrome extension," and "console application." It is a non-tangible executable component of a computer system. The tool is named "Lighthouse" in English.

### Licensing and Availability
The project is released under the **Apache Software License 2.0**. Its source code is hosted on GitHub at `https://github.com/GoogleChrome/lighthouse`. The project is also tracked on Repology under the project name `lighthouse`.

### Access and Installation
Users can access Lighthouse through several distinct methods:
- **Chrome DevTools:** Integrated directly as a core feature.
- **Chrome Web Store:** Available as an extension with the ID `blipmdconlkpinefehnmjammfjpmpbjk`.
- **NPM:** Distributed as a package named `lighthouse` for use in console environments.
- **Website:** Documentation and tools are hosted at `https://developers.google.com/web/tools/lighthouse`.

### Release History (2016)
Records indicate a series of rapid releases in the latter half of 2016:
- **August 6, 2016:** Versions 1.1.1 and 1.1.2 released.
- **September 6, 2016:** Version 1.1.3 released.
- **September 19, 2016:** Version 1.1.4 released.
- **October 10, 2016:** Version 1.1.5 released.
- **November 1, 2016:** Version 1.1.7 released.
- **November 17, 2016:** Version 1.2.0 released.
- **November 23, 2016:** Version 1.2.1 released.
- **November 30, 2016:** Version 1.2.2 released.
- **December 20, 2016:** Version 1.3.0 released.

## References

1. [Release 1.1.1. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.1.1)
2. [Release 1.1.2. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.1.2)
3. [Release 1.1.3. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.1.3)
4. [Release 1.1.4. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.1.4)
5. [Release 1.1.5. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.1.5)
6. [Release 1.1.7. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.1.7)
7. [Release 1.2.0. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.2.0)
8. [Release 1.2.1. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.2.1)
9. [Release 1.2.2. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.2.2)
10. [Release 1.3.0. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.3.0)
11. [Release 1.3.1. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.3.1)
12. [Release 1.3.2. 2016](https://github.com/GoogleChrome/lighthouse/releases/tag/1.3.2)
13. [Release 1.4.0. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/1.4.0)
14. [Release 1.4.1. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/1.4.1)
15. [Release 1.5.0. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/1.5.0)
16. [Release 1.5.1. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/1.5.1)
17. [Release 1.5.2. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/v1.5.2)
18. [Release 1.6.0. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/1.6.0)
19. [Release 1.6.5. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/v1.6.5)
20. [Release 2.0.0. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.0.0)
21. [Release 2.2.1. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.2.1)
22. [Release 2.4.0. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.4.0)
23. [Release 2.5.0. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.5.0)
24. [Release 2.6.0. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.6.0)
25. [Release 2.7.0. 2017](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.7.0)
26. [Release 2.8.0. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.8.0)
27. [Release 2.9.0. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.9.0)
28. [Release 2.9.1. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.9.1)
29. [Release 2.9.2. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.9.2)
30. [Release 2.9.3. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v2.9.3)
31. [Release 3.0.0. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v3.0.0)
32. [Release 3.0.2. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v3.0.2)
33. [Release 3.0.3. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v3.0.3)
34. [Release 3.1.0. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v3.1.0)
35. [Release 3.1.1. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v3.1.1)
36. [Release 3.2.0. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v3.2.0)
37. [Release 3.2.1. 2018](https://github.com/GoogleChrome/lighthouse/releases/tag/v3.2.1)
38. [Release 4.0.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v4.0.0)
39. [Release 4.1.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v4.1.0)
40. [Release 4.2.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v4.2.0)
41. [Release 4.3.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v4.3.0)
42. [Release 4.3.1. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v4.3.1)
43. [Release 5.0.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v5.0.0)
44. [Release 5.1.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v5.1.0)
45. [Release 5.2.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v5.2.0)
46. [Release 5.3.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v5.3.0)
47. [Release 5.4.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v5.4.0)
48. [Release 5.5.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v5.5.0)
49. [Release 5.6.0. 2019](https://github.com/GoogleChrome/lighthouse/releases/tag/v5.6.0)
50. [Release 6.0.0. 2020](https://github.com/GoogleChrome/lighthouse/releases/tag/v6.0.0)