Barcode Generator and Label Sheet

Shelf and stock labels with barcodes usually mean a monthly subscription, an online tool that sees your product list, or retyping codes into a word processor. This app builds the barcodes inside one file, with no network, from your own item list.

Add each item with a name, barcode type, code, price and the number of labels, or import a CSV. For EAN-13, EAN-8, UPC-A and ITF-14 the app adds the check digit, and if you type a full number with the wrong check digit it tells you the correct one. Leave the code blank and it makes an in-store number starting with 20. On the Label sheet tab pick a layout, preview the page, set the starting label so a partly used sheet can be reused, shift the grid to align your printer, and print at 100 percent scale. The Quick barcode tab makes a single barcode, downloads it as SVG or PNG and includes a check digit calculator.

What is inside:

• Items, Label sheet, Quick barcode, Settings and Start here tabs
• Code 128 with automatic choice of code sets, Code 39 with optional check character, ITF and ITF-14 for cartons
• A4 layouts of 8, 21, 40 and 65 labels per page, 50 x 30 mm roll labels and custom geometry
• Name, business name, price and digits on each label, switchable
• CSV import and export, JSON backup, print or save as PDF
• A worked example of nine bakery items across the main types

Who it is for: small shops, bakeries, workshops and warehouses that label their own products, cartons or bins.

What it is not: EAN and UPC numbers for products sold through other retailers must be allocated to you by GS1 (GS1 UAE in the UAE). Numbers starting 20 to 29 are set aside for in-store use on your own shelves, and this app does not allocate numbers. No QR or other 2D codes, and no GS1-128 application identifiers, in this version. Scan a printed sample with your own scanner and printer before a full run.

How it differs: the Price Tag, Shelf Label and Wobbler Print Sheets in the catalogue are designed tag and label layouts to fill in. This app generates the barcodes themselves.

Tested: 541 barcode strings across all seven types were decoded with an independent open-source reader (ZXing-C++) from rendered images. 537 matched exactly. The other 4 are Code 39 strings that the reader reads under its Code 39 Extended rules (a $, /, + or % pair); the bars were identical to a second encoder library's. Bar patterns matched that library in 333 of 380 comparisons; the other 47 were all Code 128, where the two encoders chose different but valid mixes of code sets (mine were never longer), and every Code 128 symbol decoded correctly. Printed PDFs of the 21, 40 and 65 per page sheets and 29 roll labels were rendered at 300 dpi and every barcode decoded. 60 scripted browser checks cover the tabs, validation, CSV, backup and downloads, with no console errors. Browser tests ran in Chromium and WebKit; Firefox, a real phone, a real printer and a real scanner were not available, so they were not tested.