The first man convicted under WA's new revenge porn laws has narrowly avoided jail after he "lashed out" and posted nude images of his ex-girlfriend on Instagram when their relationship broke down.

Mitchell Brindley, 25, was sentenced at Fremantle Magistrates Court on Monday, dropping his head in relief when the Magistrate told him he would not be imprisoned.

Mitchell Brindley, 25, is the first West Australian to be charged under new revenge porn laws. Credit:Facebook

He was instead placed on a 12-month intensive supervision order and told to destroy any nude images of his ex-girlfriend.

Outside court, his lawyer, Terry Dobson, publicly apologised to Brindley's ex-girlfriend on his behalf, as a violence restraining order against him prevents him from doing so.