Client-Hints is a free Chrome extension developed by Andy Davies. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools subcategory. This extension allows users to add HTTP Client-Hint headers to outgoing requests.

The main purpose of Client-Hints is to enable the communication of screen height, width, and display pixel ratio from browsers to servers. By doing so, servers can then optimize the resources they return, particularly images. This optimization can lead to improved performance and user experience.

With Client-Hints, users can enhance their browsing experience by allowing servers to optimize the resources they receive, resulting in improved performance and faster loading times.