For bands · a tool
Your Shopify export, as the store’s product file
Shopify admin → Products → Export → All products, Plain CSV. Drop the file here. It turns into products.json, the file the store reads. Everything happens in this tab; the file never leaves your computer.
You probably don’t need this page. Your store’s admin has Import from Shopify: choose the same file there and the products appear at once, pictures and all. This page is for working in the files.
What it keeps
Product handles (so /products/<handle>/ stays the same and old links work), titles, descriptions as plain text, every size and its price, sold-out sizes, stock counts where Shopify tracks them, sale prices, and image links sized for the web (the store downloads them once at build time and serves them from your own site). Products you’ve unpublished are kept but hidden. Each product is guessed into a section: music, apparel, prints, accessories, unusual, other. Change any of it in the file.
The store’s own npm run import does the same thing on your laptop, if you’d rather.