What are online ads made of?

[720]

Websites complain about users using adblock and other ad blocking tools but it's their fault for making ads out of whatever they make them out of.

Suggestion: Instead of making ads, however they make them, why not just use a picture and a hyperlink? That way adblocker can't target it.

[?]

That's doable, but generally not how ad networks work - they're feeding content into a specified content box that has a particular code profile that the adblocker software identifies and parses out while the page is rendering. You can hard code a pic/link in a page, but no one really does hardcoded HTML anymore - most websites are generated on the fly from databases now.