Resize on the fly Worpdress uploads

wp_handle_upload.php

<?php

/*
By default, wordpress create thumbnails of uploaded media, but doesn't resize the original one.
With this simple hook, original image (only jpg allowed) will be resized and compressed
*/

add_action('wp_handle_upload', function($data) {
	$max_width  = 1800;
	$max_height = 1800;
	$quality = 90;

	if ($data['type'] !== 'image/jpeg' && $data['type'] !== 'image/jpg') {
		return $data;
	}

	$image_editor = wp_get_image_editor($data['file']);
	if (is_wp_error($image_editor)) {
		return wp_die($image_editor);
	}
	
	$sizes = $image_editor->get_size();
	if ($sizes['width'] > $max_width || $sizes['height'] > $max_height) {
		$image_editor->resize($max_width, $max_height, false);
	}

	$image_editor->set_quality($quality);
	$image_editor->save($data['file']);

	return $data;
});