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Exporting QR Codes


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I have a bit of trouble exporting my layout. The layout contains qr-codes.

I have imported them as png (Only 2 Colors, black&white into affinity publisher and when I zoom in affinity I get clear edges (black/white) no matter how far i zoom in.

 

image.thumb.png.bc1c9f2ee6caf0507fafa3a099dde96f.png

However, as soon as I export them as png for example the edges are getting washed out and therefor contain more colors then the previous two (black&white).

png.thumb.png.b9d25c3fff678af56a9958df0ebd4ae3.png

Since this qr Codes are for a print product I see problems with the end result because of this.

Is there any way I can export these in two colors(black&white) and preserve the details on the edges?

Any help is very much appreciated!

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Hi @Pbj

Which colour profile does the document have? And which colour profile do you use for export?

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On top of all this, check, if pixel alignment is active. Otherwise your QR code might be placed on a fraction of a pixel, which causes anti aliasing on export.

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Thank you all for reaching in. With your help I managed to get clear edges.

However as soon as I try to export the layout in CMYK the black is getting a mixture of all colours and not CMYK(0,0,0,100). If I export it as RGB the black stays black. What could be the problem here?

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Image below shows part of your QR code magnified a bit
Top is original
Bottom, inverted, has curve applied, see attachment
Understand that I know 5/8 of not a lot about CMYK so if this is tripe I'm sorry

QRcodeProblem2.png

QRcodeCurve.afphoto

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3 hours ago, Pbj said:

However as soon as I try to export the layout in CMYK the black is getting a mixture of all colours and not CMYK(0,0,0,100). If I export it as RGB the black stays black. What could be the problem here?

Document: CMYK/IsoCoated_v2_300

QR-Codes: RGB (Please press the "K only" button.)

CMYK-Test:image.png.c4d5f7ba727d01327c3bdcafb94748d9.png

 

This article has been written with the kind assistance of DeepL.

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