Night Reader is a Chrome extension developed by Peter Nerlich that allows users to browse the web with inverted brightness for a more comfortable reading experience. By applying the CSS filter invert to the document root, Night Reader inverts the brightness of every webpage, making it easier on the eyes. This approach is more efficient as it applies the inversion to the whole area at once, rather than going through each element individually.

The extension also includes a feature that rotates the hue back by 180 degrees to preserve the visual appearance of websites with iconic color themes, such as Facebook's blue theme. However, it should be noted that very saturated colors may appear clipped in their value component after the hue rotation.

Night Reader provides a global quick extension disable switch and allows users to create a domain-based blacklist, disabling the inversion for specific websites. Additionally, the extension includes hidden CSS rules to enhance the browsing experience on popular websites like Facebook and Twitter.

Overall, Night Reader is a useful tool for those who prefer reading with inverted brightness. While it may have some limitations with very saturated colors, it offers a comfortable browsing experience for extended reading sessions.