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Issue when printing UPC-A with ShowText = F

When we generate a UPC-A barcode with ST=F, the margins of the image are incorrect. If we use ST=T, the barcode generates correctly. Examples attached.

what prints correctly: D=614390757255&S=6&ST=T&IR=200&LM=0&TM=0
what prints incorrectly: D=614390757255&S=6&ST=F&IR=200&LM=0&TM=0


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02-02-26     1 hr(s) ago    

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Answers (2)

Jacque
Hello Shane,

After reviewing your URL, we recommend first trying to keep ShowText enabled and set the Font Color to white. This preserves the barcode’s full rendering while visually hiding the human-readable text:

D=614390757255&S=6&IR=200&LM=0&TM=0&FC=white

If you prefer to disable ShowText entirely, please note that the UPC-A barcode requires adequate white space to render correctly, especially when using a higher Image Resolution (IR=200). In your current URL, both the Left and Top Margins are set to 0, which can cause the barcode to appear cut off.

If you need the higher IR, be sure to increase the margins accordingly. If you use the default IR, we still recommend leaving the default margin values to ensure proper rendering.

Ample rendering space:

D=614390757255&S=6&ST=False&IR=200&LM=1&TM=1

Reduced (tighter) space:

D=614390757255&S=6&ST=False&IR=200&LM=.4&TM=.3

Please feel free to adjust these values based on your layout requirements. Let us know if you have any further questions.

Posted 21 min(s) ago

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Jacque
Hello Shane,

Thank you for bringing this to our attention. We’re working on a fix so that you and your team can generate scannable barcodes, with or without the human-readable text below.

We’ll keep you updated and let you know as soon as the issue is resolved.

Posted 1 hr(s) ago

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