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According to Timatic https://www.timaticweb2.com Indian citizens can transit without a visa, providing you meet the following conditions:
β Passengers transiting through Paris (CDG), arriving from a non-Schengen Member State with a confirmed onward ticket for a flight within 24 hours to a third country which is not a Schengen Member State. They must:
stay in the international transit area of the airport, and
have documents required for their next destination.β
This means both flights must be on the same ticket/booking (or not have any checked bags), otherwise youβll need a visa to go through passport control to reclaim bags and re-check them.