How to replace the more tag with an image that is different with each post

Check out how to use custom fields.

Get a little creative and you’ll figure it out.

The website you pointed dont use WordPress.

I know that site doesn’t use word press. If it did I could figure it out by looking at the source. I was using it as an example of what I want.

As for custom fields, I don’t know enough to write code from scratch. I’m still at the modify/tweak/easy level. I don’t even understand WTF that tutorial is talking about let alone how it works.

I’m still at the modify/tweak/easy level
Me too. But you’ll get somewhere when you learn more.

Actually I have something in mind how it might work but too busy right now to test and write it here. Will get back in 2-3 days.

Have you found any solution?

I did it myself: Replacing more tag in WordPress with different image for every post