TT, Tidningarnas telegrambyrå, has a large image archive that is used by media that subscribe to a service or buy the images for various publications.
But if you do not have an agreement, you risk committing copyright infringement if you publish the images - and may be forced to pay damages.
This is something that the police in Strängnäs have experienced.
Did not have the right to the picture
In January 2018, the Strängnäs police published a post on Facebook.
In the post there was a picture that represented a broken car window.
The only problem was that the picture belonged to TT and that the police did not have the right to publish it.
The image remained on the social media platform until the beginning of this year when the police were made aware that the image publication was not legal.
Pays the news agency
Now the police have demanded compensation for the publication and have agreed to pay a total of SEK 1,900 for the Facebook mistake.
But the police in Strängnäs are not alone in having published pictures to which they were not entitled.
The police in Gothenburg have also been guilty of similar copyright infringement, according to documents from the police authority.