Nudity detection on your website
Testing for explicit content on a website with Google Cloud Vision API
https://medium.com/@aleksandra.zuchewicz/testing-for-explicit-content-on-a-website-with-google-cloud-vision-api-213bc16f70bb
How to recognise adult content programmatically?
https://stackoverflow.com/questions/14396211/how-to-recognise-adult-content-programmatically
Nudity detection with JavaScript and HTMLCanvas