No upload
CSV parsing, check digits, SVG barcodes, and PDF export run in your tab. There is no file API.
Die-cut studio · client-side
Generate bulk barcodes and print-ready labels — no upload, no limit, no signup
Code 128, EAN-13, UPC-A, FNSKU and more. Design Avery sheets on the bench. Your inventory data never leaves this device.
Stays in this browser · no upload
Avery 516030-up
Trust
No limit
No row cap, no page cap, no watermark. The only ceiling is the memory in this browser.
No signup
No account, no email wall. Ads may appear on the page — never on the PDF, never over Download.
Choose a tool
Three doors, one press
Same engine for all three — pick the door that matches how you work today.
01
Single barcode
Type one value, pick a symbology, and download a sharp SVG or PNG instantly.
Peel open02Bulk CSV
Upload or paste rows. Check digits are flagged by spreadsheet row before you print.
Peel open03Label designer
Avery 5160, 5163, 5167, A4, and custom grids. Drag to reorder, export a multi-page PDF.
Peel openPress run
Four steps, then print
- 1
Upload or paste
CSV, TSV, or a single code. Header row optional.
- 2
Pick a sheet
Avery 5160 / 5163 / 5167, FBA, A4, or custom millimetres.
- 3
Tune the label
Name, SKU, price, custom text, logo, drag to reorder.
- 4
Export
Multi-page vector PDF or a ZIP of SVG / PNG files.
Print setup
Recommended Label Supplies & Equipment
Choose the hardware and paper setup that matches your printing workflow.
Label sheets
Avery 5160 Address Labels (30-Up)
Official 1" × 2-5/8" sheets. Perfect for standard desktop printing.
View Sheets on AmazonThermal rolls
2" × 1" Direct Thermal Barcode Rolls
Single label rolls for FNSKU barcodes. No ink or ribbon required.
View Rolls on AmazonLaser printer
Brother HL-L2460DW Laser Printer
Fast, black-and-white laser printer. Toner melts into paper so barcodes never bleed or smudge.
View Printer on AmazonAs an Amazon Associate, LabelStack earns from qualifying purchases.
Index
By platform and size
Each of these pages opens the same generator with a template or symbology pre-selected, plus original notes that are not copies of each other. If you want the long form, start in Guides.
Why it exists
A barcode bench that never takes your catalog
Most “free barcode generators” are a text box and a PNG. The moment you need two hundred FNSKUs on Avery 5160, you are pasting a shipment CSV into a site that stores files. LabelStack is the other design: PapaParse, a GS1 check-digit, SVG bars, and jsPDF all run in this tab. There is no account because there is nothing to store.
That only works if the grid is honest. Avery 5160 is 1″ × 2.625″, 30-up, 0.1875″ side margins—not “about an inch.” FNSKU is Code 128 with an X-prefix, not a UPC. EAN-13 4006381333931 has a check digit of 1; 4006381333932 is a bad row, not a mystery scan failure at the register. Print scale is 100% or the tenth row walks onto the liner. Those are the kinds of facts we write down so the tool is not a black box.
We also write about what the tool will not do. It will not sell you a GS1 company prefix. It will not invent a UPC that a grocer will honor. It will not buy postage or replace a shipment PDF Amazon already required. A generator that pretends otherwise is how listings get mapped to someone else’s brand.
LabelStack is independent—not Amazon, not Avery, not GS1. Retail GTINs still come from a license you already hold. We encode them, lay them on Letter or A4, and leave the file on your disk. Read about, how to use, or write.
From the editors
Original guides
Practical writing, with measurements and failure modes, not doorway pages.
- How to print Avery 5160 barcode labels that actually line upPrint alignment · 14 min
- Code 128 vs UPC vs EAN vs FNSKU: which barcode should you print?Symbology chooser · 16 min
- Amazon FBA FNSKU labels: what to print and what not to mixAmazon FBA · 15 min
- GS1 check digits for UPC, EAN, and ITF-14 — worked examplesValidation · 14 min
- Why barcodes should be SVG: quiet zone, DPI, and scannersPrint quality · 13 min
- A bulk CSV barcode workflow that does not leak your catalogOperations · 14 min
- Why you should not invent UPC or EAN numbersRetail GTINs · 12 min
- Laser vs inkjet for barcode labels: toner, ink, and stockPrinters · 12 min
- Warehouse bin and location barcodes that stay scannableWarehouses · 12 min
- ISBN-13 book barcodes for small presses and self-publishersBooks · 11 min
- Letter vs A4 label sheets: why the PDF must match the paperPaper sizes · 11 min
- How to test-scan barcode sheets before a production runQA · 11 min
Questions
FAQ
Is my inventory/SKU data uploaded anywhere?
No. LabelStack runs entirely in your browser. CSV files, product names, SKUs, FNSKUs, and generated barcodes are parsed, validated, and rendered on your device. Nothing is posted to a server — there is no account and no backend that could store your catalog. You can confirm this in the network panel: generating and exporting never sends your rows anywhere. That is the point of the tool. Sellers who currently paste inventory into hosted generators are handing over supplier lists and Amazon FNSKUs; this site is built so we never see them.
What label sheet sizes are supported?
Presets include Avery 5160 (1" × 2.625", 30-up), Avery 5163 (2" × 4", 10-up), Avery 5167 (0.5" × 1.75", 80-up), plus 5161, 5162, 5164, 8160, Amazon FBA 30-up and 2×3 in, and A4 sizes L7160, L7163, and L7651. Each preset uses the published page size, label size, margins, and gutters so a desktop laser or inkjet lands on the actual sticker grid. If you use a house brand or a European size that is not listed, choose Custom size and enter width, height, columns, rows, and margins in inches. Letter vs A4 is a different page box — read the paper-size guide before printing a US PDF on A4 stock.
Is there a limit on how many barcodes I can generate?
No. There is no row cap, no page cap, and no watermark on PDF or ZIP exports. The only limit is your browser’s memory. Thousands of rows are parsed in chunks so the tab stays responsive; the sheet preview shows one page at a time while export walks the full set. If you generate tens of thousands of labels, leave the tab open until the PDF or ZIP finishes — it still never leaves your machine.
Why is this free?
LabelStack is a client-side tool with no servers to rent for your data. Optional advertisements on the page (never on the PDF, never over the download button) are how the lights stay on once the publisher network accepts the site. There is no paid tier because the product is the browser app: generate, layout, export. If ads are blocked, the generator still works. We also publish original guides because a tool without the print-alignment and symbology context is how people reprint a hundred bad stickers.
More answers on the full FAQ.