640px is the content size set in your functions.php. Here is an example of the content width set in the bundled theme twentyfourteen in twentyfourteen/functions.php#L28 if ( ! isset( $content_width ) ) { $content_width = 474; } In this example, the image size will be 474 px. The content size will be the size used … Read more
Look at this answer by Chip Bennet – Medium / Large images sizes aren’t cropped by default ( and I also just verified on my install ). You can change the cropping of Thumbnails in Settings -> Media. It sounds like what you really need is just a new image size via add_image_size() which is … Read more
Following our exchange in the comments I’ve reread your question and have a pretty straightforward answer: It looks like it’s working fine. You are worried about the sizes attribute in your second example, but it’s the srcset attribute that you should look at and it is showing all of your image sizes: <img src=”http://xxx.dev/wp-content/uploads/Delft_IMG_6275-e1453192498922.jpg” class=”attachment-full … Read more
I am assuming you want this value on the front-end as opposed to needing it in the block editor due to the <figure> somehow not displaying correctly when viewed in the block editor. If that is the case then you can use something similar to DOMDocument as per the following example: Assume HTML of: <div> … Read more
I have the same issue with not being able to turn off big_image_size_threshold (one of the worst new features WordPress has ever put out) for kicks I tried removing the quotes around return false but it doesn’t resolve the issue. The example in Codex does in fact show quotes. https://codex.wordpress.org/Function_Reference/_return_false I have opened a ticket … Read more
even if you had included the all of the needed files you will still have to create your some extra hidden fields like _nonce to pass the check_ajax_referer( “set_post_thumbnail-$post_ID” ); also you would need to create an action hidden field to identify the case of Ajax call with the value : “set-post-thumbnail” You are better … Read more
For image formats that are only used for a small fraction of the images, I suggest using an on-the-fly image resizer. Preferrably one that caches the images so that you only have to resize them once. I use TimThumb for a number of projects, and it’s been good enough for me.
Answers: Is post_guid the image location reference? Or is the path to the image stored somewhere else? $post->guid is the record in a post which holds the URL for your attachment. Where is featured image set? featured image is saved as post meta so use update_post_meta() once you have the attachment id: update_post_meta( $post->ID, ‘_thumbnail_id’, … Read more
It’s very possible, but quite hard to accomplish reliably for all cases (I was working on a plugin for client to do this and more, but sadly the project was never completed). But if you need this for specific blog that you have control over – then task can be simplified with some constrains – … Read more
<?php global $_wp_additional_image_sizes; print ‘<pre>’; print_r( $_wp_additional_image_sizes ); print ‘</pre>’;