The Common European Framework of Reference for Languages (CEFR) is a guideline used to describe achievements of learners of foreign languages across Europe and other countries that constitutes of six reference levels.
Below are the various french levels from A1 to C2.
A1 & A2 level : Beginners
French language course online for beginners
B1 & B2 level : Intermediate
French language online course for Intermediate
C1 & C2 : Advance
French language online course for advance.