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I am using following code to prevent WordPress from creating some un required image sizes for my theme and only upload the original size

add_filter( 'intermediate_image_sizes_advanced', 'prefix_remove_default_images' );
function prefix_remove_default_images( $sizes ) {
 unset( $sizes['small']); // 150px
 unset( $sizes['medium']); // 300px
 unset( $sizes['large']); // 1024px
 unset( $sizes['medium_large']); // 768px
 return $sizes;
}

The code is somehow working and I am able to upload the original size but as you can see WordPress still generating 150x150 size images

As you can see I explicitly added unset( $sizes['small']); to the code, but this is still happening! Can you please let me know what I am missing here?

I am using following code to prevent WordPress from creating some un required image sizes for my theme and only upload the original size

add_filter( 'intermediate_image_sizes_advanced', 'prefix_remove_default_images' );
function prefix_remove_default_images( $sizes ) {
 unset( $sizes['small']); // 150px
 unset( $sizes['medium']); // 300px
 unset( $sizes['large']); // 1024px
 unset( $sizes['medium_large']); // 768px
 return $sizes;
}

The code is somehow working and I am able to upload the original size but as you can see WordPress still generating 150x150 size images

As you can see I explicitly added unset( $sizes['small']); to the code, but this is still happening! Can you please let me know what I am missing here?

  • plugin-development
  • theme-development
  • images
  • post-thumbnails
Share Improve this question asked Jul 31, 2022 at 19:01 SuffiiSuffii 2015 silver badges14 bronze badges
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1 Answer 1

Reset to default 2

That's because there is no image size called small in WordPress. It's possible your theme registered it but the thumbnail size WordPress uses internally at 150x150 is named thumbnail not small

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