Dark Reader is a free extension for Chrome, Firefox, Edge, and Safari that will make surfing the web easier on the eyes through customizable dark themes.
Where this extension differs from simply turning on or scheduling night light mode as Tim wrote about previously, Dark Reader for Chrome provides more control by allowing you to dictate which websites are affected and which are not.
You will have some adjustable settings at your disposal, toggling between light and dark themes, brightness value adjustment, contrast, grayscale as well as sepia effects. You can also set the visited webpage's font and modify the text stroke. Additionally, you can create a website list that ensures that the dark theme will never be applied.