Step 1: Define two custom image sizes, e.g.: <?php add_image_size( ‘normal-thumbnail’, 400, 300, false ); // Default image size add_image_size( ‘mobile-device-thumbnail’, 200, 150, false ); // Mobile-device image size ?> Step 2: Implement your chosen means to determine client. There are several ways, and which method you use is outside the scope of this question. … Read more
A very special filter The jpeg_quality filter is a really special one: It gets used in three different cases and you’ve to use the second argument to determine, if you want to use the filter or not. Don’t let it do everything The main problem for such a special filter is, that it may fire … Read more
The Approach I think the best approach is to create an image size “on the fly”, just before the images is resized. You can do that using ‘intermediate_image_sizes_advanced’ filter hook. That allows you to edit the size to be generated, but being aware of the current image size, that is stored in the array $metadata … Read more
I recently had to do this via a nightly cron script for a social media stream. $parent_id is the ID of the post you want to attach the image to. function uploadRemoteImageAndAttach($image_url, $parent_id){ $image = $image_url; $get = wp_remote_get( $image ); $type = wp_remote_retrieve_header( $get, ‘content-type’ ); if (!$type) return false; $mirror = wp_upload_bits( basename( … Read more
Starting from WordPress 4.4, you can use add_term_meta function to store metadata for a term. This is basically a key-value pair information which is stored in wp_termmeta table. Original Answer(Prior to WP 4.4) WordPress doesn’t have the option to add extra information to taxonomies. There isn’t any taxonomy_meta table. So, you have two options. Create … Read more
it might not be the exact answer you’re after but i think i just found a pretty good workaround. Iv’e taken the following code from the twenty-eleven theme CSS (who’s neatly responsive imho): /* Images */ .entry-content img, .comment-content img, .widget img { max-width: 97.5%; /* Fluid images for posts, comments, and widgets */ } … Read more
I found the culprit! WordPress 5.3 introduced additional image sizes which can be found via /wp-includes/media.php. Updating my function, like so, removed the extra sizes: function remove_default_image_sizes( $sizes) { unset( $sizes[‘large’]); // Added to remove 1024 unset( $sizes[‘thumbnail’]); unset( $sizes[‘medium’]); unset( $sizes[‘medium_large’]); unset( $sizes[‘1536×1536’]); unset( $sizes[‘2048×2048’]); return $sizes; } add_filter(‘intermediate_image_sizes_advanced’, ‘remove_default_image_sizes’);
Assuming the question is about wp_get_attachment_image_src. It could be also about wp_get_attachment_link, but, although related, this analysis doesn’t includes it. Got aware of this issue answering this question: How can I view all WP generated thumbnails in Media Manager?. Refer to it to see a working code regarding the issue on this Question. And it … Read more
Ok, so I think I may have come to a solution. It doesn’t seem as nice and easy as I’d like it to be, but then again major modifications to default WordPress functionality sometimes requires drastic measures. 🙂 This is my working solution to rewriting the HTML output for post thumbnails throughout my site to … Read more
Looks like you can hook into the wp_create_thumbnail filter: function wp_create_thumbnail( $file, $max_side, $deprecated = ” ) { if ( !empty( $deprecated ) ) _deprecated_argument( __FUNCTION__, ‘1.2’ ); $thumbpath = image_resize( $file, $max_side, $max_side ); return apply_filters( ‘wp_create_thumbnail’, $thumbpath ); } So just do your manipulation, and return the result to wp_create_thumbnail.