Terms of use

LabelStack.app is a free, client-side barcode and label layout tool. By using it you agree to these terms. If you do not agree, do not use the site.

The service

The app generates barcodes and printable sheets in your browser. We do not take possession of your CSV, SKUs, or PDFs. Features may change. The tool is provided “as is” with no warranty that a given scanner, printer, or marketplace will accept the output. You are responsible for print scale, paper size, licensed GTINs, and Amazon inbound rules. The guides are practical commentary, not a certification.

Your numbers

You must have the right to encode the values you enter. LabelStack does not issue UPC, EAN, or GS1 company prefixes. A valid check digit is not a license. FNSKU formatting checks are a convenience, not Amazon’s certification. Trademarks (Avery, Amazon, FNSKU, Etsy, GS1) remain their owners’. We use them only to describe compatible sizes and formats.

Acceptable use

Do not use the site to encode numbers you do not have the right to use as retail GTINs, to impersonate a marketplace label, or to overlay tracking barcodes on postage you did not buy. Do not attempt to upload malware via the file picker; files are parsed locally and never stored by us, but we still ask that you not try.

Ads and analytics

Pages may show Google AdSense units and send page views to Google Analytics (G-G9PEDMQ1BC). Recommended paper and printer links may be Amazon Associate links; LabelStack earns from qualifying purchases. Ads are not placed on exported PDFs. Details: privacy.

Limitation

To the extent allowed by law, LabelStack is not liable for reprint costs, inbound chargebacks, or lost inventory arising from use of the generator. The app is a typesetting bench, not a logistics provider.

Questions: contact@labelstack.app. Who we are: about.