Of course, I don’t know what articles you’ve read – however, I’m pretty much sure they are about WordPress’ functionality to automatically resize images after upload, as in actual pixel width and height. What you are talking about, is scaling (via CSS). So in short: these are two different pair of shoes.
I have integrated the same functionality you mentioned almost 1.5 years back. Unfortunately there is no easy way or single plugin which will do all these. Note your plugin selections are correct.
Make sure the permissions for the upload folder are set correctly, and that none of WordPress’s files have been deleted. Also, try disabling all plugins. If it still doesn’t work, try adding this to the .htaccess file: <IfModule mod_security.c> SecFilterEngine Off SecFilterScanPOST Off </IfModule> Test and see if it will work on a small image, … Read more
Heh… may I ask you what is the point of this? Because one would think that it’s to save bandwidth and shorten the time the page loads. So why would you always want to load all three of them? The display: none will NOT prevent the images from being loaded into the DOM. They will … Read more
You have to trigger a change event on your field, i.e. hrld_media_input.attr(“value”, ui.item.value).change();. This will ensure that attachment_fields_to_save will get triggered.
add file name column to media library to sort by
Dynamic banner for use on external sites
Missing Images in Uploads Directory (Server Only)
Upload more than one media files with a post
get_attached_file() can do this, given you know attachment ID for input.