WordPress image resize on upload

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I have wordpress plugin which has widget where users can upload their image.
For uploading image I am using wordpress built in functions for media included by: 

wp_enqueue_media();

Which gives me the same UI for uploading image from my widget like it’s under Media tab.

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I also added my custom size of the image to be created on upload: 

add_image_size( 'my_size', 360, 540, false );

And I am using this size of the image to display it on the frontend.
The problem is that, when wordpress resize original image to this size it loose quality. The image “my_size” is like blurred.

Does anyone have some idea how this can be resolved. To keep image quality when it’s resized, or at least to not loose too much on the quality.

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1 comment

  1. By default WordPress reduces the image quality of an image to reduce its size. If you don’t want this to happen you can use a filter you customize the quality at which the image is saved. The default WordPress quality was 90%, and from WordPress 4.5 on was decreased to 82%.

    You can use the filter below to modify the quality to 100% is this is what you need.

    add_filter( 'jpeg_quality', 'image_quality');

function image_quality() {
    return 100;
}

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