This library is not battle tested. Its output should not be trusted especially from users you don't know or trust.
Based on Pagedown for StackOverflow by Jeff Atwood
- Do not use user input that is included inside javascript or script tags.
- Do not use user input that is included inside CSS.
- The src value in an image is not checked i.e.
<img src="mywebsite.com/delete_something">
This is especially important if URLs can change state. (Your URLs shouldn't change state.)