Quick question and its not a critical one (I will probably muddle through and figure it out eventually) but...
How do I add some other image sizes for uploaded images so I can incorporate them into posts more cleanly? Right now after I upload an image it just gives me three real options (other than full-size) for displaying it in the post:
thumbnail
medium
large
The problem is I just need more categories. I know how to set the sizes of the existing categories in settings > media but I need more than 2 non-thumbnail sizes for images. Just medium and large is not enough, given the different widths of the page and blog content, etc. For example I want to be able to create a "blog-large" category that is exactly the width of my blog text, maybe another that is half this width for right-floated images, etc. And use the existing medium and large for similar uses but on the wider pages.
After a little research on wordpress.org I discovered that adding the following to my child theme functions.php should do it:
if ( function_exists( 'add_image_size' ) ) {
add_image_size( 'blog-full', 530, 530 );
}
I have added this (and I do have a child theme), but I can't seem to get an extra option for an image size when I upload a new image and try to place it on a post. Still just the old thumbnail, medium, large, etc.
In the documentation it said that this will not work unless the current theme includes add_theme_support( 'post-thumbnails' ); in its functions.php file. Is this what is going on, and why it does not seem to work maybe? If so, is there any danger to me enabling add_theme_support( 'post-thumbnails' ), will that conflict with the whole featured image/slider thing in this theme? If I should not enable this (or there is some other issue)...how do I add a few other categories of image sizes?














