How to display Unicode correctly?

I’m not sure whether you are using a plugin, or you are coding it yourself. Either way, you can use server side or client side to decode or encode your content.

PHP offers the utf8_decode(); and utf8_encode(); functions, that can be used to decode or encode your content before sending it to the browser, or after being received by the server.

If you need to do this on the client side, JavaScript also offers the same functions. You could take a look into decodeURIComponent(); function.