Ask HN: How To Prevent Abuse of Image Hosting in a Personal Project

I want to publish my small tool (just a showcase) that allows uploading of photos and manual geotagging by clicking on a map. I intend to host the images.

What steps can I take to prevent abuse and learn of the common malicious uses?

E.g. Stop people uploading child abuse images.

Does this sort of thing require extensive resourcing, and instead I should just manually check and hope for the best?