How barcodes work
A barcode encodes data as a series of parallel lines of varying widths. A barcode scanner reads these lines using a laser or camera and converts them back into the original data — typically a product code, serial number, or URL. Barcodes enable fast, accurate data entry and are essential for retail inventory management, product labelling, and supply chain tracking.
Common barcode formats
EAN-13 is the international standard for retail products sold in stores — 13 digits including a country code prefix. UPC-A is the North American retail standard — 12 digits. Code 128 encodes any character (letters, numbers, symbols) and is widely used for shipping labels and warehouse management. Code 39 is common in industrial and automotive applications.
Using barcodes for small businesses in Pakistan
Small businesses selling in retail stores need EAN-13 barcodes, which require registering with GS1 Pakistan to get a legitimate company prefix. For internal inventory tracking, you can create Code 128 or Code 39 barcodes with any numbering scheme you choose. For product labelling on goods you sell directly to customers, a custom barcode helps with inventory management even without a GS1 prefix.
Frequently Asked Questions
Do I need a GS1 number for my barcode? Only if you are selling through retail stores that scan products at checkout. GS1 Pakistan issues company prefixes for legitimate EAN-13 barcodes. For internal use or direct-to-customer sales, you can use any number.
What resolution should I download the barcode? For clear printing, download at the highest available resolution. Barcodes printed too small or at too low a resolution may not scan reliably. Test with a scanner before mass printing.
Can I use this for QR codes? This generator creates traditional linear barcodes. For QR codes, use the QR Code Generator.
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