For this situation, you should use add_image_size. You can find more info about it in the codex. What add_image_size does is register new sizes for your thumbnails, so you can use them with the_post_thumbnail (and other functions). Here´s the example from the codex: if ( function_exists( ‘add_image_size’ ) ) { add_image_size( ‘category-thumb’, 300, 9999 ); … Read more
Yes your question makes sense. My understanding of the image attachments in WP is that you upload an image and it gets resized to all defined sizes currently defined in your instance of WP. So you can’t specify a given size for a given image upload. And therefore, there is no way of ascertaining what … Read more
Last I checked (meaning, it may have been updated in 3.5 and I just haven’t noticed), passing an array for an arbitrary image size hasn’t worked since before WordPress 3.0. You have to pass a pre-defined image size. Try: Define your custom image size: add_image_size( ‘some-custom-name’, 150, 150, true ); (called along with add_theme_support( ‘post-thumbnails’ … Read more
Definitely a hack solution, but the only one I know got to work thus far… <?php $bkg_image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), ‘single_post_thumbnail’ ); ?> <style> span { background-image: url(‘<?php echo preg_replace(“/\.jpg.*/”, “-50×50.jpg”, $bkg_image[0]); ?>’); } </style> Basically, I am fetching the non-photon URL, and doing a string replace of the end image URL ‘.jpg’ … Read more
@Ibraheem, you don’t have to use global $post, since it is in global. To check post type you can use get_post_type(). Using the_post_thumbnail is not properly implemented in this case, instead use get_the_post_thumbnail. Note: you can’t use has_post_thumbnail as tag condition if you are not set featured image. add_filter( ‘the_content’, ‘put_thumbnail_in_posting’ ); function put_thumbnail_in_posting( $content … Read more
You can work around if you have time. – Install http://ffmpeg-php.sourceforge.net/ – Create a custom meta field (upload field – you can use a plugin) – In your template or loop, get retrieve the uploaded video URL and assign it to a variable – Use the following function to generate an image from the retrieved … Read more
There’s no easy way in version 4.8, as far as I know. Few ideas come to mind, regarding writing plugins to make it easier: Use the media_send_to_editor filter to modify the HTML output for the application/pdf mime type, to include the preview image. This makes it is easier for user to insert pdf preview images, … Read more
I was confusing add_image_size with set_post_thumbnail_size. The problem with the latter is that you can only set one ‘thumbnail’ size. I wanted to be able to keep the original image intact and apply a custom crop to the thumbnail version of the image. I’m using multiple image sizes around the site as the ‘thumbnail’ though. … Read more
You might want to check out this resource which provides a relatively simple and easy to understand snippet to achieve just that! Link to the original source from @Matthew Price. I have pasted the code below for the purpose longevity but please note this is not my code nor am I taking credit for its … Read more
According to this stackoverflow question, there is a program called imagemagick that might do this for you server side but it would probably be outside of WordPress. Otherwise, it looks like you have to shrink every frame and then put it all back together.