для сторінки товару візьміть код нижче, створіть файл original_product_image.ocmod.xml, код у файл, файл у папку system, оновити кеш модифікаторів
<modification>
<name><![CDATA[Original Product Image]]></name>
<code>original_product_image</code>
<version>1.0.0</version>
<author>Pavel Kravchenko</author>
<link>https://opencartforum.com/profile/711752-paulkravchenko/</link>
<file path="catalog/controller/product/product.php">
<operation>
<search><![CDATA[$data['thumb'] = $this->model_tool_image->resize($product_info['image'], $this->config->get('theme_' . $this->config->get('config_theme') . '_image_thumb_width'), $this->config->get('theme_' . $this->config->get('config_theme') . '_image_thumb_height'));]]></search>
<add position="after"><![CDATA[
$data['image'] = HTTPS_SERVER . 'image/' . $product_info['image'];
]]></add>
</operation>
</file>
<file path="catalog/view/theme/*/template/product/product.twig">
<operation>
<search><![CDATA[<img decoding="async" src="{{ thumb }}" alt="{{ heading_title }}" title="{{ heading_title }}" data-thumb="{{ thumb }}" data-full="{{ popup }}" width="{{ thumb_width }}" height="{{ thumb_height }}" class="product-page__image-main-img img-responsive" >]]></search>
<add position="replace"><![CDATA[<img decoding="async" src="{{ image }}" srcset="{{ thumb }}" alt="{{ heading_title }}" title="{{ heading_title }}" data-thumb="{{ thumb }}" data-full="{{ popup }}" width="{{ thumb_width }}" height="{{ thumb_height }}" class="product-page__image-main-img img-responsive" >]]></add>
</operation>
</file>
</modification>