How to delete webp and heic images after upload

Hi @sarahgb,

WP Offload Media Support Team here. Thanks for reaching out with your query! We would be happy to assist.

By default, WordPress only allows certain file types to be uploaded to the Media Library. Since WP Offload Media works closely with the Media Library, only those file types that are successfully uploaded will be offloaded by the plugin.

https://deliciousbrains.com/wp-offload-media/doc/developer-guide/#automatic-offload

Can you kindly confirm if the WebP and HEIC images were successfully offloaded? The plugin only removes files that were successfully offloaded to your bucket. If they weren’t offloaded, you may try using a plugin(s) that adds support to those file types.

Another alternative is using the as3cf_allowed_mime_types filter. Below is a sample code that you can add to your custom theme’s functions.php file, add to a custom plugin, or add via plugin like Code Snippets.

add_filter( 'as3cf_allowed_mime_types', 'custom_allowed_mime_types', 10, 1 );
function custom_allowed_mime_types( $types ) {  // Allow offload for webp and heic           
    $types['webp'] = 'image/webp';
    $types['heic'] = 'image/heic';
    return $types;
}

Please let us know how it goes for you.