Husnain Rashid, 31, allegedly shared a photo of Prince George and his school address on messaging app Telegram, along with other posts which allegedly could help others identify UK targets such as stadiums.
Rashid appeared at Westminster Magistrates’ Court on Wednesday, when prosecutors also alleged that he planned to travel to Syria to join Islamic State.
The 31-year-old, who appeared in the dock wearing a grey tracksuit and glasses and spoke only to confirm his name and address, is charged with one count of preparing acts of terrorism and one count of assisting others to prepare acts of terrorism.
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The British national, of Leonard Street, Nelson, was arrested on Wednesday, November 22 by officers from Lancashire Police and Counter Terrorism Policing.
He was remanded in custody to appear at the Old Bailey on December 20.