The placeholder image can now be set at: WooCommerce > Settings > Products as of version 3.5x.
More info at: Configuring WooCommerce Settings.
WooCommerce 3.4x or earlier
↑ Back to topNote: We are unable to provide support for customizations under our Support Policy. If you need to customize a snippet or extend its functionality, we recommend working with a Woo Agency Partner or finding a WooCommerce developer on Codeable.
Add code to your child theme’s functions.php
file or via a plugin that allows custom functions to be added, such as the Code snippets plugin. Avoid adding custom code directly to your parent theme’s functions.php
file as this will be wiped entirely when you update the theme.