How to make image uploads default to full size?

It doesn’t look like that filter exists in WordPress core. That being said, I have the solution for you. That select uses an option to set the default size: get_option( ‘image_default_size’, ‘medium’ ); So all you have to do is update that option: update_option( ‘image_default_size’, ‘full’ ); For reference: media.php line 1296

How to add element to the list of adjacent images?

There’s a few problems here. Your regex is pretty broken. You should be using a tool like regex101 to test that. I think for your first function you need to add the possibility of newlines between the image tags like so: /(<img.*?>\r?\n?){2,}/ You can add * before the ?‘s if you want to grab multiple … Read more

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