A man who posted intimate images of his ex-girlfriend on social media after their relationship broke down has become the first person charged under WA's new revenge porn laws.

The 24-year-old Spearwood man was involved with a woman of the same age, and during their relationship, took consensual intimate images of her.

WA Police have charged the first person under the new laws, which came into effect in mid-April. Credit:iStock

WA Police allege after the pair broke up, the man created a fake Instagram account in the victim's name and posted seven intimate images of her without her consent.

"It will be further alleged when the Instagram page was removed, four other Instagram pages were created in the victim’s name and a total of 10 intimate images were posted," a police spokeswoman said.