Romain Letellier, 27, who also uses the name Abou Siyad al-Normandy, was found guilty Tuesday in Paris, Radio France Internationale reported. He received a three-year prison sentence with two years suspended.
Letellier, who has been in custody since his arrest in September, was the first person prosecuted in France under a new law banning the promotion of terrorism. The law was passed after an Islamic fundamentalist killed seven people in Toulouse in 2012.
At his hearing, Letellier said his actions were "very stupid." He said his website was not aimed at inciting terrorist actions in France or the United States.