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Merge Poshmark and Depop Sales Data for Xero Import

Xero's bank/sales import works best with a single uniform sheet, which is hard to get directly from two different platforms' raw exports.

Why Poshmark and Depop exports don't line up

Poshmark: a sale date in the seller's local time; listing price and the Poshmark commission shown separately; an order number tied to a single sold item, since bundles are the main exception. Also, the export is aimed at individual resellers, so it has far fewer columns than the bigger platforms and no shipping/tax breakdown.
Depop: a transaction date column; item price and Depop's payment processing fee as separate lines; a transaction ID rather than a traditional order number. Also, like Poshmark, the export is minimal and mixes sold, refunded, and offer-related rows together.

For xero import, that mismatch is exactly what causes hours of manual cleanup every period.

Open CSV Experts and set your target columns once (Date, Channel, Order ID, Total).
Drop in your Poshmark export and map its columns once.
Drop in your Depop export and map it the same way — both merge into one sheet, normalized.
Export as CSV or Excel. Same-layout files merge automatically next time.

No. Everything runs in your browser using JavaScript — your files are never sent to a server.

Yes. Add as many source files as you want; each distinct file layout is mapped once and remembered.