Mosques all over France are taking part in a dialogue weekend, opening up to the public as the country marks one year since radical jihadis attacked a satirical newspaper and Jewish supermarket, killing 17 people.

The open-door initiative that includes tea and pastries was organized by France's main Muslim body to counter islamophobia and highlight the differences between jihadism and moderate, peace-loving Islam.

After fresh attacks in November, police conducted over a dozen raids on Muslim places of worship and closed several over radicalization fears.

In other events to mark the first anniversary of January's attacks, French President Francois Hollande paid homage to a female police officer killed by gunman Amedy Coulibaly. In the evening, many will gather for an homage at a Jewish supermarket, the site of a fatal hostage siege.