GS1-128 barcode generator
The logistics barcode that says what is inside: product, batch, best-before date, serial or pallet number.
GS1 element strings like (01)09501101530003(17)271231(10)AB12.
About GS1-128
GS1-128 is Code 128 with a rule for the data: each value starts with an application identifier in brackets, such as (01) for the GTIN, (17) for the expiry date and (10) for the batch.
Warehouses and retailers read these fields straight into their systems. The brackets are printed under the bars for people; scanners do not see them.
What goes in it
- Format
- (AI)value(AI)value…
- Common AIs
- (00) SSCC, (01) GTIN, (10) batch, (17) expiry YYMMDD, (21) serial
- Length
- Up to 48 characters of data
- Built on
- Code 128 with FNC1
GS1-128 questions
YYMMDD. 31 December 2027 is 271231. Use 00 for the day if only the month matters.
An 18-digit number for one pallet or parcel, under AI (00). It must start with your GS1 company prefix.
Yes, like (01)09501101530003. We use them to find the fields and leave them out of the bars.