Dull Mode is a free Chrome add-on developed by OhRick. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools subcategory.

The main purpose of Dull Mode is to reduce eye strain caused by predominantly white webpages. If you often find yourself experiencing discomfort while using certain websites due to their bright backgrounds, this extension is designed to help alleviate that strain.

Unlike a true "dark mode," Dull Mode simply reduces the brightness of webpages. It allows you to customize the level of darkness you prefer and even provides the option to exclude specific webpages from this adjustment.

However, it's important to note that Dull Mode may not always be able to dynamically adjust to newly added webpage content. Additionally, there are certain webpages that are locked down by Google for security reasons, such as new Chrome tabs and the Chrome Web Store. Interestingly, Dull Mode does work on Google Search, Drive, and Docs.