Barcodes on your pack that every till can scan
Enter the number your business was assigned; the tool adds the last digit, sizes the code to standard and test-scans it like a till would.
- You are about to print packs for supermarkets or convenience stores
- You need a code for cartons going to a distributor
- A printed code will not scan at the checkout
- Runs on your device
- Scan-tested for you
- True-size SVG download
A faulty barcode means stock stuck in the warehouse
A Sinh Vũ working principle: test a mark at the smallest size it will ever be used before signing it off. The barcode is the smallest mark on a pack, and the only thing on it that a machine must read.
One wrong digit breaks the code
The last digit is a check digit, calculated from the ones before it. Get one digit wrong and the till rejects the code, so staff have to key it in by hand.
A nice colour the scanner cannot see
Checkout scanners use red light. Red, orange and yellow bars reflect red light like white paper, so they vanish even though people see them clearly.
Shrunk or cut short to fit the pack
An EAN-13 should not go below 80% of standard size. Smaller, or with the bars cut short, and scanners need several passes, slowing the queue.
What people often ask
Three questions Sinh Vũ often gets about this tool.
Can I make up my own barcode number?
No. Products sold through supermarkets, chains or online marketplaces need a number assigned to your business by GS1 (in Vietnam, GS1 Vietnam; Vietnamese numbers start with 893). This tool only draws the code from the number you have been given and works out the check digit.
Can I change the barcode colour to match my pack?
Yes, as long as the bars are dark and the background is light. Checkout scanners use red light, so red, orange and yellow bars all but disappear. Black, dark blue or dark brown on white or pale cream is the safest choice.
Is it a problem to shrink the code to fit?
An EAN-13 should only go down to 80% of standard size, with the bar height kept in proportion. Smaller, or with bars cut short, and many scanners need several passes; some retail chains will ask you to reprint.
How do I print barcode labels in bulk?
Choose Many codes, paste your list from Excel or drop in a CSV file (a spreadsheet saved as plain text), then pick a label size: an A4 label sheet or a label roll. The tool checks every line, scan-tests every code, lays them out and exports a PDF. When printing, keep it at exactly 100% and do not choose fit to page.