Kowsar Hossain

This is an addon of “Easy Digital Downloads” plugin.
If you want to make discount code as a required field, this plugin will help.
During checkout when a customer will try to purchase without entering any discount code, checkout process will be interrupted and customer will see an error notice.
You can configure the error notice text from “Downloads>Force Discount” menu from admin panel.

Force Discount for EDD

A lightweight plugin to force the customer to enter a discount code during checkout

rahilwazir

Wooninjas

Protects (compress) image files when uploaded as Download file attachment.
When you upload a image file through File Downloads section under Download Files metabox, it uploads the original image file as it is and archive it into .ZIP format. 
Then the .ZIP file format is returned back to Media library, user select it and insert into the attachment field.
The original image file which was uploaded then be deleted from the filesystem after it’s archived into .ZIP which is default behavior.
<h4>Options</h4>
There are couple of options you can use to change it’s behavior. Navigate to Downloads – Settings – Extensions – Protect Images
<ul>
<li>
Overwrite ZIP File 
Forces overwrite the ZIP file which already exist with the same name. If this is unchecked and the ZIP file exist (same name), it does not archive and an error is returned. Default: Unchecked
</li>
<li>
Prevent File Deletion 
Avoid deleting the image file after it is archived in ZIP. If image file is required for other use case. Image file will be listed on next refresh when you open Media library. Note: This creates two attachment posts, the one which is archived as ZIP and other is the original image file. Default: Unchecked
</li>
</ul>

Easy Digital Downloads – Protect Images

Protects (compress) image files when uploaded as Download file attachment.

Force Discount for EDD vs Easy Digital Downloads – Protect Images