Seller Flex means you pick, pack and label in your own warehouse — but the label Amazon hands you carries no SKU and arrives in whatever order the portal chose. The free LabelFlow extension stamps your SKU and quantity on every label, numbers the batch in pick order, and prints straight to thermal.
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Seller Flex labels identify the order, not the item. Stamping the SKU and quantity on each one turns a stack of labels into a pick list your packer can work straight down.
Labels are sorted and numbered before printing, so nobody walks the aisle twice or hunts for label 40 of 120 halfway through a run.
Labels are re-rendered rather than scaled, so the barcode stays sharp on a 203 dpi thermal head and the driver scan does not fail at pickup.
QZ Tray sends the batch directly to your Zebra or TSC printer — no PDF download, no browser margins shrinking the label.
Install LabelFlow from the Chrome Web Store and sign in with your EditLabel account.
Work in the Amazon portal exactly as you do now. The extension spots the labels and overlays your SKU, quantity and batch numbering.
The batch is ordered for picking and sent to your thermal printer via QZ Tray, or saved as a stamped PDF.
Last updated September 2026
You hold the stock and pack the order in your own warehouse, and Amazon collects it — so the labelling and pick accuracy are your problem rather than the fulfilment centre's.
Because the label Amazon gives you identifies the order, not the product. Without the SKU a packer has to open the portal for every line, which is where mis-picks come from.
No. The extension works on top of the labels Amazon already gives you, so your process is unchanged and nothing breaks if you uninstall it.
Yes — the batch is sorted, numbered and sent to the thermal printer in one go via QZ Tray.
Yes, the same extension covers both. The Vendor Central shipping label page explains the PO-based flow.
The extension and the SKU stamping are free. Bulk printing and direct thermal output are part of Pro.
Process and preview for free. Create an account to download print-ready PDFs and unlock bulk.
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