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Q. Why have I not received my Licence Key ?

A. We aim to issue keys in less than 24 hours, but please allow a full 24 hours due to differences in time zones and working hours. We will use the email address that you have given to PayPal. If this is not your usual email address, please remember to check it. Also, please ensure that your junk mail filter allows mail from our domain (


Q. What does it do ?

A. Just Barcodes CL allows you to generate bitmap images of barcodes. These may be saved or copied to the clipboard for use in other application programs. It can be run from the command line, from a batch file or from your own application.

Q. How do I run Just Barcodes CL from my own application ?

A. One way is to use the ShellExecute Windows API function. For more information, please see Advanced Topics in the help file contents list.

Q. Will it suit my needs?

A. Try it and see! Remember that you can use Just Barcodes CL for up to 30 days, on a trial basis. There are no restrictions or limitations with what you can do with the barcodes during that time. See the download page.

Q. How do I obtain a barcode number for my product?

A. Before you can use UPC or EAN codes in retail applications, you need to get an EAN.UCC company prefix, by contacting your GS1 Member Organisation. Please view the following web page for more information:

At the time of writing, the above page includes a link showing where to contact the appropriate authority for your part of the world. Once you have a company prefix, you can form a barcode number by appending your own item reference number to it. Then you can generate the barcode using a program such as Just Barcodes CL, ready for printing on your product.

Alternatively, go to the GS1 home page at:

Q. Where can I find more information on barcodes ?

A. As with most things these days, doing a search on Google is a good start. If you prefer a book, you may like to look at The Barcode Book (ISBN: 0911261052). This is usually available from Amazon. (Please note that we have no connection with Amazon, the author or publisher of this book.)

Q. Where can I find out more about ISBN numbers?

A. The ISBN Users' Manual, available at is a good place to start.

Q. What about Code 128 / EAN-128 character sets A, B and C?

A. Just Barcodes CL handles everything automatically. The starting character set is chosen automatically, and Just Barcodes CL switches character set when necessary within the barcode, to produce a compact barcode. This is easier than using barcode fonts.

User Questions

Q. How can I get the exact magnification % value that I want ?

A. The resolution you are using determines what magnification values are possible. You may have to settle for a slightly higher or lower magnification.

Q. I get black horizontal lines across my TIFF files!

A. Just Barcodes saves the TIFF files correctly, but some software fails to render certain compressed TIFF files correctly, including the previews in Vista and Windows 7. For Windows 7, this hotfix is available from Microsoft. More information is on this Microsoft web page. An alternative is to save the files without compression, or use the BMP format instead.

Q. Where can I get the OCR-B font recommended for EAN-8, EAN-13, UPC-A or UPC-E barcodes?

A. One source is The suggested type is TrueType for Windows. We do not supply this font in order to keep the price to a minimum. (Some users may already have this font on their system. Others may use a symbology that does not require OCR-B, such as Code 39 or Code 128.)

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