The current Cordouan Lighthouse was completed in 1611, 7 kilometres (4.3 mi) from the shore on a small islet, but was built on a previous lighthouse that can be traced back to the 880s and is …

Lighthouse has audits for performance, accessibility, progressive web apps, SEO, and more. You can run Lighthouse against any web page, public or requiring authentication.

Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps. When auditing a page, Lighthouse runs a barrage of tests …

Lighthouse, structure, usually with a tower, built onshore or on the seabed to serve as an aid to maritime coastal navigation, warning mariners of hazards, establishing their position, and …

Automated auditing, performance metrics, and best practices for the web. - GoogleChrome/lighthouse

Dec 9, 2025 · This site includes photographs, directions, histories, and GPS coordinates garnered while personally visiting every lighthouse in the United States and nearly every lighthouse in …

A lighthouse is a tall tower with a large, bright light at the top, typically located near the shore of a body of water. Its purpose is to warn ships of dangerous obstacles and guide them safely to …

Extensive lighthouse construction did not occur in modern times until the 17th century. Prior to that time, most lighthouses were harbor lights serving as homing beacons so boats could …

Jun 2, 2025 · Lighthouse aims to provide guidance that is relevant and actionable for all web developers. To this end, there are two features available that allow you to tailor Lighthouse to …

What is a lighthouse? A lighthouse is loosely defined as a tower or other structure used to display a light for the guidance of ships to either avoid a dangerous area (shoals, etc.) or to identify a …