The man is accused of having possessed five child pornographic images, one of which - a collage consisting of seven images - is judged to be grossly abusive material.
The police's national cybercrime center received information about the man from the USA after images uploaded to Adobe's storage service were flagged in an automatic search for child pornography.
Tracked IP address
The report was sent to the Swedish police, who traced the IP address of the now accused Nyköping resident's home.
According to the investigation, the images had been opened in Adobe Photoshop for editing, after which they were uploaded to Adobe's storage service.
Denies crime
The man has in police interrogation denied the crime, and said that he has never seen the pictures before.
In the man's browser, the police also found a number of searches with child pornographic content.
He has also denied in the interrogations that he has a sexual interest in children.
Common with child porn search
The automatic image search where the images were flagged has been used for several years by several American storage services to find child pornography.
In addition to Adobe, these include Google and Microsoft.
Images are compared against a large database provided by the American child safety organization NCMEC and which contains information on known child pornography.