The boy stood accused of persuading, or trying to persuade, the girls to pose in front of a web camera, according to a report in the Borås Tidning daily.
The boy has been now been convicted for crimes including the gross exploitation of a child for sexual posing and child pornography crimes, the newspaper reported.
The boy has also been convicted of possessing child pornography on his home computer.
The 16-year-old, who was convicted at Borås district court on Friday, has been ordered to pay a total of 25,000 kronor ($3,720) in damages to the seven girls.
He was furthermore instructed to pay a charge of 500 kronor to the Crime Victim Compensation and Support Authority (Brottsoffermyndigheten).
The boy has furthermore been placed under probation.
The crime classified as exploitation of a child for sexual posing has been framed in Swedish law since 2005. If the crime is considered aggravated the offence carries a minimum prison sentence of six months and a maximum of six years.