Automatically share image posts on Pixelfed. You choose which Post Types are shared. (Sharing can still be disabled on a per-post basis.)
By default, shared statuses look something like:
My Awesome Post Title https://url.to/original-post/
If you'd rather format statuses differently, there's a share_on_pixelfed_status filter.
Example: if the image posts you share are all very short, mostly plain-text messages and you want them to appear exactly as written and without a backlink, the following couple lines of PHP would handle that.
add_filter( 'share_on_pixelfed_status', function( $status, $post ) {
$status = wp_strip_all_tags( $post->post_content );
return $status;
}, 10, 2 );
More complete documentation, and code examples, can be found at https://jan.boddez.net/wordpress/share-on-pixelfed.