The product catalog is parsed by impact.com into the "Impact Format" which can be downloaded in a range of file formats.
You can select how you want to download your Impact Format product catalogs by changing the File Format settings.
From the left navigation bar, select
[Cloud] → Data Feeds.
Select
[Edit] next to Product Feeds to edit the section.
Select the File Format. You can select XML, CSV, or TAB.
CSV and TAB are both plain text formats; CSV is comma-separated, TAB uses tab as a separator.
Choose whether if you want the file compressed (gzip) or not. Compression is recommended for larger product catalogs.
Select Save.
In order to download a product catalog, you will need to have joined a brand that has uploaded one.
From the top navigation bar, select Content → Product Catalogs
You can download the product catalog from the Actions column.
Select Download Impact Format to download the impact.com standardized format of this product catalog.

Note
Product catalogs downloaded in Impact Format on impact.com are in the same format as they would be when downloaded via FTP.