Amazon Listing Prep

Turn a mockup batch into Amazon UK flat-file CSVs that you upload to Seller Central.

How this works

Process your designs in Mockup Processor. That writes a batch CSV inside your output folder.
Load that batch CSV here — the page lists every design that has T-shirt mockups.
Fill in price, title, description, brand, etc. Mark each design as Adult or Kids. You can tick Select all and hit Generate with MeshX Mind to auto-fill descriptions, bullets, and (optionally) rewritten titles in one pass — a huge boost for Amazon SEO.
Click Generate Amazon CSV — you'll get adult.csv and/or kids.csv to download.
Log in to Amazon Seller Central → Catalog → Add Products via Upload → upload the TSV file(s). Amazon processes overnight.

A couple of things worth knowing before you start

Browse Node ID — Amazon needs the numeric category ID for where the shirt belongs (Novelty & Special Use → Clothing, etc.). Grab the right one from Amazon's UK Browse Tree Guide: download the XSD/XLS for Apparel, open it, and find the browse_node_id that matches (Adults and Kids each have their own). Set them once in the Defaults section below and every row picks them up automatically.
One age range per CSV. Each generated file is either Adult or Kids — you cannot mix both in a single upload (Amazon rejects the whole file). If you want to list the same designs for both audiences, run this whole prep twice: tick every design as Adult and generate one CSV, then come back, flip the designs to Kids, set the Kids Browse Node + department, and generate the second CSV. Upload both to Seller Central separately.

This page does not post to Amazon directly — you still upload the CSV yourself. First time setting up? See the Amazon setup guide for Professional Selling Plan / Brand Registry / GTIN exemption.

Connect your output folder

This is the folder where Mockup Processor saves your batches. The page reads batch CSVs and mockup images from here.