Dark Reader generates dark themes for websites on the fly. Use the night mode to take care of your eyes. Adjust brightness and contrast to better fit your screen.
A feature-packed and customizable article reading extension - like a read mode, but better. It removes the distractions like ads, modals, and navigation from vision, letting the user just read the content. http://justread.link/
Fika is a tool which can help you extract the main content from the webpage and present it in a peaceful reading mode. Other than that, Fika retrieves the table of content and offers four delightful themes: Vanilla, Latte, Blabar, Licorice.
This service takes any web article or news page and returns only the relevant content, freeing you from any clutter, including ads, popups and more.
Install the Chrome extension, the Firefox Add-on or simply add "clearthis.page/?u=" before the URL you want to extract the useful content.