About Selling Fee Tools

Selling Fee Tools is a set of free tools for people who run online stores on Shopify, WooCommerce, Amazon, Etsy, eBay and TikTok Shop. Each tool does one job: convert a catalog, check a file before import, or work out a number you need to price a product.

Why everything runs in your browser

Product exports contain costs, supplier names and stock levels. None of that should sit on someone else's server. Every tool here processes files with JavaScript on your own device. Nothing you drop into a tool is sent to us, and closing the tab discards it.

Where the numbers come from

Fee rates, tariff rates and image specs are copied from the official pages of each marketplace and customs authority. Each page shows the date its data was last checked and links to the source. The methodology page explains the process.

Who runs it

Selling Fee Tools is run by Nexis Solutions1 Ltd, a company registered in England and Wales (number 16994235).