From beginners
Topito is a "fun facts" webiste. Short articles about everything, easy to understand. The website includes videos and quizz!
From A2
Le Petit Quotidien is a daily newspaper dedicated to kids from 6 to 10 years old. Therefore, the articles are quite short, with easy vocabulary and simple sentence structures. You can also rely on infographics to support your understanding.
From B1-B2
Slate offers long and interesting articles about society, culture, economy, sport and media.
Some podcasts are also available.