EAN-13 and EAN-8
Use them to represent an assigned GTIN. The tool checks the fixed length and final check digit.
Free tool
Bulk barcode generator for EAN, UPC and Code 128
Create one barcode or import a CSV batch. Keep leading zeros, validate EAN and UPC check digits, then print an A4 sheet laid out for your label dimensions.
Your preview will appear here
Enter a value, or paste the list you already have.
EAN · UPC · CODE 128
Build one label or import a complete list. Every row stays in the supplied order, including leading zeros and flagged duplicates.
Label dimensions
These dimensions control the SVG and A4 sheet. Measure your label stock, then print at 100% scale.
Choose EAN, UPC or Code 128
Your data decides the format. An assigned GTIN calls for EAN or UPC; an internal reference calls for Code 128 B.
UPC-A
Use it for an existing North American product identifier. Supply all 12 digits.
Code 128 B
Use it for internal references and warehouse locations. The symbol carries its own check character.
Already have a warehouse location list?
Paste it as supplied or import it from CSV. The tool keeps the upstream picking route intact. It does not create or optimize your addressing plan.
A valid image does not assign a GTIN
Validation checks number structure and the check digit. It does not prove allocation, ownership or the linked product. For commercial identification, start with a number licensed through your GS1 Member Organisation.
Continue your workflow
For warehouse location and inventory workflows in myFulfillment.
Name what already exists, without wasting the sheet
The blocker is rarely the image, but what surrounds it: a wrong check digit, a code clipped by the margin, a sheet rescaled at print time.
Start from the number you were already assigned
An EAN-13 comes from your GS1 Member Organisation, a location code from your addressing plan. The tool represents it; it does not allocate it.
Check before printing, not after
Length and check digit are verified on screen. Once the sheet is on the racking, you correct rack by rack.
Print at true scale
The sheet follows your dimensions on A4. Scaling it changes the narrow-module width and breaks the read.
Three situations that lead here
The format follows from the data you already hold, not from the output you have in mind.
You are addressing a warehouse
Aisles, bays and levels already exist in your plan. You need a Code 128 B sheet in that exact order, applied rack by rack without losing your place.
You are labeling products
The GTINs are assigned and you want their check digits verified before printing hundreds. A wrong check digit is invisible on a crisp image.
You are reusing an existing list
An ERP export or spreadsheet already holds values, labels and quantities. That file order is your picking route, and it survives untouched.
A label is only worth printing if software reads it afterwards
This tool stops at the sheet. What comes next — picking order, the check at packing — needs software that knows your locations.
myFulfillment
Your locations drive the picking order
The picking list sorts by location, then by SKU or by name.
Warehouse operationsmyFulfillment
Orders leave in batches
Batches are unique, single or multiple, capped by an order count; the picking list is produced for the batch.
Order managementmyFulfillment
The scan refuses what does not match
At packing, a code with no expected item is refused, and a quantity above what is left to pack is blocked.
Warehouse operationsRead in code at commit 8f50853dFour picking-list sort modes, two of them by location
| Location, then SKU |
| Location, then name |
| Name |
| SKU |
No quantified gain: code establishes that a capability exists, never its effect on your lead times.
FAQ
FAQ: barcodes, check digits and label sheets
Yes. Paste the list or import a CSV with value, label, quantity and format columns. Every row comes back out in its place: nothing is sorted and nothing is deduplicated.
Yes. Validation, preview, the SVG and the first A4 page — downloaded or printed — are free, with no account and no email. Beyond that page, the complete sheet asks for an email address.
Reading the body of the number from right to left, digits are multiplied alternately by 3 and 1. The check digit is (10 − (that weighted sum modulo 10)) modulo 10. The tool applies the same rule GS1 publishes in its own calculator.
UPC-A carries 12 digits and is the common retail format in North America; EAN-13 carries 13 and is the common format elsewhere. Both are GTINs and both end with a check digit this tool verifies.
For a commercial identifier used across retailers and marketplaces, start from a number licensed through your GS1 Member Organisation. A valid image does not allocate a GTIN: this tool checks structure and check digit, never ownership.
The most common cause is a barcode font: stretched by the word processor or clipped by the margin, it draws bars the scanner refuses. An SVG keeps the bar widths exact. Paste the printed value here and compare it with the code on your label.