Reader Mode++ by Ignits

Reader Mode++ is a lightweight Firefox extension designed to enhance your reading experience on the web — especially helpful for language learners and focused readers.
With just a click, it removes distracting elements like sidebars, headers, footers, and ads from any webpage. Customize your reading environment by adjusting font style, font size, background color, and text color in a clean, user-friendly interface.
Perfect for students, researchers, or anyone who wants a clutter-free and personalized reading view. Simple, elegant, and effective — Reader Mode++ helps you focus on what really matters: the content.