Automatic cropping of multiple thumbnail images takes up a lot of disk space, and migration and maintenance costs. Generally, the function of automatic cropping of thumbnail images needs to be disabled
After WordPress upgraded to 4.4, four versions of thumbnails will be generated by default after the introduction of the srcset image multi screen adaptive function.Because to adapt to different screen sizes, sometimes different sizes are generated according to different picture proportions.However, if you upload an image to generate multiple images of different sizes, it is a waste of space under some themes.
Medium_large: a fixed width of 768 and unlimited height;
You are familiar with the first three versions. Go to the WP background ->Settings ->Media, and you can see the size settings of the pictures:
Meaning of the above settings:
Thumbnail size is set to 0, which means thumbnail clipping is disabled
Medium, the width is set to 768, and the height is 0 (unlimited), which means that the width shall prevail, and the height adaptively adjusts the scaling, while keeping the defaultmedium_large_size_w=768 is consistent, sharing one drawing
Large size, which is set to 0, means that large image clipping is disabled
medium_large，Enter the WP database and search the wp_options tablemedium_large_size_wYou can see.
Press Ctrl+f at the same time to call up the browser search box for quick reference
It can be seen from the above list that if we upload a picture of sufficient size, at least four thumbnails will be generated. Why is it said that at least?
Because it is suitable for screens of different sizes, sometimes it is necessary to generate different sizes according to different picture proportions.
However, uploading an image requires generating multiple images of different sizes. What a waste of space!
Disable automatic cropping of thumbnail pictures
In order to disable automatic cropping of multiple thumbnail images, which takes up a lot of disk space, and migration and maintenance costs, it is necessary to disable the automatic cropping of thumbnail images.
Generally, only the first and third steps are needed.
Usually, we just need to set all sizes to 0 on the multimedia settings page to disable thumbnail clipping:
Step 2
However, the above method cannot be disabledmedium_large The data is written into the database. The solution can be searched after entering God modemedium_large_size_w, set to 0.
Step 3
In the topic root directoryfunctions.php<? Of?Add the following code in php and save it
//Disable automatically generated picture sizesfunction shapeSpace_disable_image_sizes($sizes) {unset($sizes['thumbnail']); // disable thumbnail sizeunset($sizes['medium']); // disable medium size unset($sizes['large']); // disable large size unset($sizes['medium_large']); // disable medium-large size unset($sizes['1536x1536']); // disable 2x medium-large size unset($sizes['2048x2048']); // disable 2x large size return $sizes;}add_action('intermediate_image_sizes_advanced', 'shapeSpace_disable_image_sizes');//Disable zoom dimensionsadd_filter('big_image_size_threshold', '__return_false');//Disable other picture sizesfunction shapeSpace_disable_other_image_sizes() {remove_image_size('post-thumbnail'); // disable images added via set_post_thumbnail_size() remove_image_size('another-size'); // disable any other added image sizes}add_action('init', 'shapeSpace_disable_other_image_sizes');
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