Preview Document PDF EBOOK before selling via WooCommerce and WordPress Online Store 2022 

for few files its ok, but for large qty its too much job, have solution for make it whit single file ?

This method requires that we have an edited file for the preview, but won't there be one that the complete file that I upload does the same for me? it's double work to edit the preview and upload it

I have no idea what you are saying