Amazon Vendor Central gives you a PO label with no SKU on it, so your packers match by ASIN. The free LabelFlow extension stamps your own vendor SKU, quantity and a sequential number onto every label as you download it — then prints straight to your thermal printer.
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A Vendor Central label identifies the item by ASIN, which nobody in your warehouse picks by. The extension overlays the vendor SKU you actually use, so a packer reads the label and knows the shelf.
A large PO arrives as many labels. Each one is stamped with its quantity and a running number, so a part-shipped PO can be reconciled without opening the portal again.
Labels are re-rendered crisply rather than scaled up from a screenshot, so the barcode reads first time on a 203 dpi thermal head.
With QZ Tray installed, labels go from the browser to your Zebra or TSC printer with no save-open-print detour and no browser margins.
Install LabelFlow from the Chrome Web Store and sign in with your EditLabel account. Nothing else to configure.
Go to the shipment in Vendor Central and download the labels the way you already do. The extension recognises the page and stamps your SKU, quantity and numbering onto each label.
Send them straight to the thermal printer via QZ Tray, or save the stamped PDF for later.
Last updated September 2026
Yes. The extension is built for Vendor Central and Seller Flex in India, which is where the ASIN-only label problem shows up most.
From your EditLabel SKU catalogue: you map an ASIN to the SKU your warehouse uses once, and every future label for that item is stamped with it automatically.
Yes, the workflow is unchanged. The extension works on the labels Amazon gives you rather than replacing the portal, so nothing about your process breaks if you stop using it.
No. Direct printing via QZ Tray is optional — you can save the stamped PDF and print it however you like.
The extension is free to install and the SKU stamping is free. Bulk features and direct thermal printing are part of Pro.
Yes, the same extension handles Seller Flex. See the Seller Flex shipping label page for how that flow differs.
Process and preview for free. Create an account to download print-ready PDFs and unlock bulk.
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