Social media giant Facebook is trialling a new system urging its users to 'send nudes.'

The company aims to tackle revenge porn by inviting users to send it compromising photos so they can be permanently blocked from the sites it operates.

The system will see the Facebook community operations team using image matching technology to block the images being uploaded or shared online.

The scheme is aimed at people who are worried partners or ex-partners may share the images without their consent - and is being trialled in Australia, the US, Canada and the UK.

The company has said it will store the images for a short time before deleting them.

Australian eSafety Commissioner Julie Inman Grant said the initiative " aims to empower Australians to stop image-based abuse in its tracks.”

She said the plan, "has the potential to disable the control and power perpetrators hold over victims, particularly in cases of ex-partner retribution and sextortion, and the subsequent harm that could come to them."

The Tánaiste Frances Fitzgerald has already announced plans to make it a criminal offence to post revenge porn online.

The new bill will make it illegal to post sexually explicit images online without consent of the person pictured – while also criminalising “upskirting;” the practice of taking photos or videos up a person's skirt without their knowledge.