You can print off barcodes on labels to stick on products that don't have barcodes.
In the United States then we use the following templates: 
US 80 labels per sheet: Avery 48267 
US 24 labels per sheet: Avery 5363
In Europe and the rest of the world we use the following: 
A4 80 labels per sheet: Avery L4732REV-25 
A4 24 labels per sheet: Avery L7159
 
There is an option to print to sheet with 80 labels - small version.
Shows Barcode only

There is an option to print to a sheet with 24 labels - big version.
Shows Product Name / Price / Product Code

Step-by-step guide
- Select the products you want to print barcodes for and click the print button. 
   
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Select the size barcodes you wish to print.   
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A Pop up and ask you for the quantity. So if you say 5 then will print 5 of each barcode.   
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A PDF will be generated which you can then print onto the labels.  
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Please note you need to Feed the labels by the Feed arrow on the printer itself. 
If you go to a stock order that you have created and click print and select label type it will generate the barcodes and quantity of the orders automatically for all stock that has barcodes.
