Barcode generator: which format your label actually needs
A barcode is only a machine-readable version of a code you already have, so the format matters more than the design. Code 128 is the right default for internal labels, invoices, asset tags and warehouse use because it packs the most data into the smallest width. EAN-13 is the format retail shelves and marketplaces expect for products, and UPC-A is its North American counterpart. Enter your code, watch it render instantly, and download a crisp PNG or a scalable SVG — free, in your browser, with nothing uploaded.
Frequently asked questions
Which barcode format should I use in India?
Use Code 128 as the default. It encodes any text in the least space and is read by every scanner, POS and inventory system in India, which makes it right for shop and warehouse labels, invoices, asset tags and packaging you manage yourself. Choose EAN-13 for retail products that will be sold through modern trade or listed on marketplaces, because that is the format their systems expect. Choose Code 39 only when a buyer or a legacy system specifically asks for it, and UPC-A only for North American retail.
How do I generate a UPC barcode?
Pick UPC-A in the format list and type an 11-digit number; the tool calculates the 12th check digit and adds it automatically. If you already have a 12-digit UPC, paste the whole number and the tool verifies the check digit before generating. UPC-A is the North American retail standard — for Indian retail and marketplaces, EAN-13 or a GS1-issued number is what is required instead.
What is a Code 128 barcode?
Code 128 is a high-density 1D barcode standard that encodes the full ASCII set, so it can carry numbers, letters and symbols such as invoice or SKU references in one symbol. It switches between three code sets and includes a checksum, which is why a Code 128 barcode is narrower than a Code 39 barcode holding the same text. It is the most widely used linear barcode for labels, logistics and invoicing.
Can I use a generated barcode on Amazon, Flipkart or a retail shelf?
Marketplaces and organised retail require EAN-13 barcodes allocated by GS1 India under your own company prefix, and they validate the number against their catalogue. Barcodes generated here are ideal for internal stock, MRP stickers, dispatch and warehouse use, but a self-generated EAN-13 number should not be printed as a retail product identifier — the number itself must come from GS1.
What is the difference between the PNG and SVG download?
PNG is a fixed-resolution image, best when a system expects a picture or you are printing at a known size. SVG is a vector: it scales to any size without blurring and keeps the bars sharp at any print resolution, which is what label printers and designers prefer. Both downloads come from the same barcode, so keep the SVG for artwork and use the PNG where a picture is required.
My barcode will not scan. What usually goes wrong?
Almost always size and print quality. A linear barcode needs blank quiet zones on both sides, strong black-on-white contrast, and bars printed without scaling artifacts — blurry or stretched bars from a low-resolution PNG are the usual cause. Print at 100% scale rather than “fit to page”, keep the quiet zone clear, and test with the exact scanner you will use before printing a full run.