Free CSV tools for e-commerce sellers
Everything you need to wrangle a product export — convert it between platforms, split, merge, fix, view, or reshape it. All free, no signup, and your file is processed privately in your browser. Nothing is uploaded.
Product CSV converter
The main tool. Reformat a product export between 13 platforms — Shopify, WooCommerce, Amazon, eBay, BigCommerce, Magento, Wix, Square, Squarespace and Etsy, plus Google Merchant, Facebook & Instagram and TikTok Shop feeds. Any direction, every column mapped for you.
Open the converter →Single-purpose CSV tools
Each one does a single job well, in your browser. Free, no signup, nothing uploaded.
Split a CSV
Break a large product CSV into smaller files (e.g. 100 rows each) so bulk imports don't time out — the header is added to every part.
Open Split →Merge CSV files
Combine multiple CSVs into one, matching columns by header name (union, case-insensitive), with optional de-duplication and a source column.
Open Merge →Fix a CSV
Repair what makes importers reject a file: hidden UTF-8 BOM, stray ;/tab delimiters, ragged rows, blank rows and extra spaces.
CSV viewer
Open and read a CSV in a sortable, searchable table — no spreadsheet app needed. It even detects which store the export came from.
Open Viewer →CSV ↔ JSON
Convert CSV to JSON or JSON back to CSV. Leading-zero SKUs, long GTINs and trailing-zero prices stay intact — round-trip exact.
Open CSV ↔ JSON →Convert between platforms
Map a Shopify, WooCommerce, Amazon, Etsy or marketplace-feed export into another platform's import format in one click.
Open Converter →Popular conversions
Jump straight to a ready-made converter page for a common platform pair:
Import failing?
If your store rejected your file, find your exact error and the exact fix:
Why a toolkit? Moving a catalog between platforms is rarely one clean step. Exports are too big, columns don't line up, files come back broken or full of garbled characters, and every destination wants a slightly different format. These tools cover the messy reality — each is deterministic (same input, same output), private (your data never leaves your browser), and free to use without an account. Built for e-commerce sellers and the agencies and VAs who manage their catalogs.