Is there a way to use the built in thumbnail function outside of a post, outside of the media manager and within a admin options page of a plugin?
Everything I read only talks about using a thumb inside a post.
I have added some help images inside my plugin and when clicked, the thumb opens via ColorBox.
But I want the clickable help image to be a thumb of the full size image that pops up in colorbox and do not want to make two versions of the image.
Was thinking about using timthumb but would rather use some wordpress hook as I do not see a parameter in colorbox to set a thumb site.