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Skip Unneeded Image Sizes

Stops WordPress from generating the medium_large, 1536px and 2048px copies of every upload, saving disk space.

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Code

add_filter( 'intermediate_image_sizes_advanced', function ( $sizes ) {
    unset( $sizes['medium_large'], $sizes['1536x1536'], $sizes['2048x2048'] );

    return $sizes;
} );

Notes

Responsive images will have fewer sizes to choose from on large screens.

How to add this snippet

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  2. Use snippet above adds it from the library in one click. Or copy the code into a new snippet with the same code type.
  3. It is added inactive: review the code and settings, then switch it on.

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