This is the official documentation for the discount product feed shopify app.
The reason this app as created was in order to solve the issue of creating product feeds to use in Facebook where you can also create automatically implemented discount codes within the products in the product feed.
By using this app you have the advantage of using discount codes within your DPAs (Dynamic Product Ads) which can be used to decrease your customer bounce rates by having the discounts automatically applied in the checkout and not needing the customers to add them manually.
In this app you can create a product feed of your products on shopify and also any new products that are added to your store will automatically be added to your product feed with the discount you previously chose.
Depending on the plan you choose and also on the amount of products you have in your store you might be limited to some of the products from your store.
For example if you are on the Free plan your product feed will only include the first 20 products in your store which shouldn’t be a problem if you have 20 or less products, however if you have more than 20 products only the first 20 will be included in your product feed.
The same goes for the other plans except the pro plan which will show all the product in your store regardless of how many there are.
You can create a product feed by going to the discount product feed app and choosing a few simple options before you are ready to start using your product feed in Facebook with DPAs.
If you would like to generate a product feed without any discount code applied to it you can just click on the “Save Changes" button and the product feed url will appear and you can start by adding that link to Facebook in order to create DPAs.
If however you would like to create a product feed with a discount code automatically applied to all your products then you can check the option “Enable Product Feed Discount" which will then allow you to select a discount value and the discount code name and then click on the button “Save Changes" and your product feed will be created or updated depending it another one already exists.
By default the app adds all the product variations if any into your product feed however if you would like to only include the first variation only you can append to the end of the url
?no_variants like so: