The eSafety Commissioner has investigated more than 31,000 complaints of illegal and offensive online content over the last three years, new figures have revealed.

Since last June there have been 264 complaints to the commissioner, a 28 per cent jump on the same period last year.

The figures have been released as Australia's education ministers prepare to meet in Adelaide on Friday where harassment in schools will be a focal point.

State and territory ministers are expected to bring anti-bullying strategies to the table that have made a difference for their students.

Federal Communications Minister Mitch Fifield said having somewhere to turn was part of the reason for the increase in bullying complaints.

"As well as more people being willing to call out bad behaviour online," he said.

While anti-bullying efforts are being made in schools, Education Minister Simon Birmingham said there needed to be a broader effort.

"It's not just schools and teachers that have a role but also parents and families who need to be armed with resources and information so they can help children being bullied," he said.

Legislation is currently before parliament that would see individuals fined up to $105,000 for sharing revenge porn images online, while the eSafety Commissioner was granted power to issue "removal notices" for perpetrators, social media providers and websites that post the images.

ESAFETY COMMISSIONER FIGURES:

* 264 cyberbullying complaints June 2017-April 2018

* 206 cyberbullying complaints June 2016-April 2017

* 757 cyberbullying complaints since July 2015 inception

* 31,374 illegal and offensive content investigations since July 2015

* 383,497 online safety presentations since July 2015

Australian Associated Press