25 year old Andrew Pallot has been jailed for three years for having more than 1,000 indecent images of children.
He was arrested in November 2021, in a joint investigation between the National Crime Agency and the States of Jersey Police.
Officers seized a number of devices during a raid on his home.
Analysis found 1002 indecent images of children, with some within the most serious categories.
Pallot pleaded guilty to three counts of making indecent images of a child and one count of distributing indecent images of a child.
Jersey's Royal Court has sentenced him to three years in prison and put him on the Sex Offenders' Register for seven years.
Detective Constable Allan Bale from the Public Protection Unit says these crimes aren't victimless.
"These images cause real harm to real children and the viewing and making of indecent images like these creates demand and so leads to further abuse.
Any form of abuse against children will not be tolerated and the States of Jersey Police are committed to target those who offend in this way."
Islanders who have concerns about suspected child sexual abuse can contact MASH on 519000 or the Public Protection on 612612.
Victims of sexual abuse can get in touch with the Sexual Abuse Referral Unit at Dewberry House on 888222.
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