There is a filter, wp_get_attachment_image_attributes, for the image attributes– a well designed one too. function alter_att_attributes_wpse_102079($attr) { $attr[‘data-src’] = $attr[‘src’]; return $attr; } add_filter( ‘wp_get_attachment_image_attributes’, ‘alter_att_attributes_wpse_102079’); That will add the data-src attribute. That looks like what you need. You could add more attributes, or alter the existing onese, if you need.
This should get you started: Loop over all posts and build an array of linked image files Loop over all image attachments & cross check if any of them have been linked to Might need to batch it or boost the timeout & memory limit, depending on the server & number of posts you’re working … Read more
I would strongly discourage this. A better, more sustainable practice would be to educate your clients on the value of the title attribute and teach them how to use it properly. Simply removing it is putting a bandage on the symptom, not combating the disease. However, if you do want to remove the attribute anyway, … Read more
This is not able to be changed through a filter. In WordPress 2.9.2 and lower, the setting can be changed in /wp-admin/options.php. The image_default_link_type field is set to “file” by default. If you set it to “none”, then scroll to the bottom and save, it will disable media links. This option has been removed from … Read more
That’s pretty advanced and it doesn’t sound like you are all that comfortable with WP yet, no offense. You can definitely do this with WP Alchemy (I have and do), but you really have to get down and dirty with some Javascript to 1. launch the media uploader and 2. to hijack the send to … Read more
The filters you are trying to use run on image insertion, so it is not possible to swap all the images already present in your posts using these filters. It should work, however, if you intend to change to img tags from now on. The filter the_content, however, is applied to the post after it … Read more
I decided to approach it differently. Instead of hooking into ‘wp_handle_upload_prefilter’ and tampering with the $file variable I decided to do the resize after the file is uploaded and after I get the attachment id like this: public function resize_attachment($attachment_id, $width, $height) { // Get file path $file = get_attached_file($attachment_id); // Get editor, resize and … Read more
You can try the image_send_to_editor filter: /** * Wrap the inserted image html with <figure> * if the theme supports html5 and the current image has no caption: */ add_filter( ‘image_send_to_editor’, function( $html, $id, $caption, $title, $align, $url, $size, $alt ) { if( current_theme_supports( ‘html5’ ) && ! $caption ) $html = sprintf( ‘<figure>%s</figure>’, $html … Read more
I use the Auto Post Thumbnail plugin for doing just that on this site and it works fine. First image in a post becomes the featured image every time.
I know this is old, but I just came across it shortly before I came across the solution. To display the author image inside the loop, just use this code: <?php echo get_avatar( get_the_author_meta( ‘ID’ ) , 32 ); ?> Where ’32’ is the size of the image. If it’s outside the loop, then just … Read more