CSV Experts — merge multi-channel sales exports with saved column mappings
Solo and small e-commerce sellers running multiple sales channels — Etsy, Amazon, Shopify, eBay — end up with a differently-formatted export file from each one. CSV Experts merges them into a single clean sheet for bookkeeping or tax prep. You map each channel's columns once; every future file with that same layout merges automatically, with no re-mapping and no re-uploading to any server.
1. Your target columns
These are the columns your merged file will have. Add or edit them — they only need to be set once.
2. Add source files
Drop in each channel's export. First time you see a file with a given set of headers, you'll map it once — after that, it's remembered automatically.
Drop CSV or Excel files here, or click to browse
Map columns for
This header pattern hasn't been seen before. Match each target column to a column in this file, then save — next time this exact file shape shows up, it's applied automatically.
If your target columns include one named "Channel", it's filled with this tag for every row from this file shape — instead of you having to map it to anything.
3. Merged result
Saved mapping templates
These are remembered on this device (browser local storage) so recurring exports skip the mapping step.