For Your Eyes Only is a free Chrome extension developed by em_te that falls under the category of Browsers and the subcategory of Add-ons & Tools. This extension aims to improve webpage performance by restricting the loading of content from external sources.

When visiting a webpage, it is not uncommon for assets such as images and CSS to be loaded from sources outside of the webpage's own domain. This can negatively impact the performance of the webpage if these external assets are slow to load. With For Your Eyes Only, users can simply click on the toolbar when they are on a webpage to activate the extension.

The next time they visit the same webpage, any assets that are not hosted on the original domain will be blocked from loading. This means that if, for example, a user visits archive.org and views an archive of yahoo.com, the main document will load but any images or CSS from yahoo.com will be blocked. This helps to ensure that webpages only load content from their own domain, improving performance and potentially enhancing security.