Q-files is an online encyclopedia designed to make knowledge accessible to readers of all ages. Described as human-written, expert-verified and regularly updated, the site offers more than 2,500 pages covering a wide range of subjects. Its content spans science, history, geography, technology, culture, mathematics, space, Earth, prehistoric life and the natural world, with topics ranging from ancient civilizations and animal life to robotics, weather and the universe.

Readers can explore articles, use search, and test their knowledge with quizzes. Many subjects also include easy-read material, while the mathematics section offers exercises on numbers, shapes, data and measurements. The site features Q-news, including recent and archived stories, and provides information about its consultants, frequently asked questions and educational resources.

Q-files is free to read with advertising. Readers who prefer an ad-free experience can subscribe, and the site also promotes an app on Google Play. The website identifies Orpheus Books Ltd in its copyright notice and presents Q-files as a resource for homework, family learning and discovering new subjects.