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Posted

In Affinity Publisher 2.6.2 on Window 10, I am trying to change the black barcode colour on a PDF.

I use the 'Move Tool' to select the barcode then change the CMYK slider in the upper right corner to 0-0-0-100. The Fill slider up top correctly states 0-0-0-100 too, but when I hover the colour picker over the barcode, the black is not 0-0-0-100 but rather is 16-0-0-96. Why is that? Which one is correct?

Using 'Arrange', I moved the barcode to the top just to be sure there was nothing covering it.

Posted

Possibly the barcode is a layer of type 'pixel', not 'vector'? Then you can't change its fill colour simply by defining a colour but may nest an object with the desired colour… or apply a colour with the Flood Fill Tool (bucket) in the Photo Persona for instance.

Bildschirmfoto2025-04-19um08_54_39.thumb.jpg.27375b3f3c9be87dc6e4125859dcf170.jpg

• MacBookPro Retina 15" |  macOS 10.14.6  | Eizo 27" | Affinity V1  
• iPad 10.Gen.  |  iOS 18.5.  |  Affinity V2.6

Posted

Thank you for responding, @thomaso .

The barcode supplier sent me files 0-0-0-100 in BMP (colour space RGB), EPS (colour space grey), JPEG (colour space grey), PDF (colour space grey), and TIF (colour space grey).

JPEG and TIF work okay. They loaded into Affinity Publisher as 0-0-0-100 and I can alter the black to whatever I want, if I wanted to. The other files read as different codes of black in Affinity Publisher, and I cannot alter the colour.

Two file types work okay, as I stated, however, I would like the BMP and EPS images to work the same way.

Maybe the problem is with 'pixel', not 'vector' but I do not know what the files are (I am an amateur).

I have to sign off. It is 4:12 am here in Ontario, Canada.

Posted
13 minutes ago, Cedar said:

0-0-0-100 in BMP (colour space RGB)

That sounds contradictory, an RGB image doesn't have a black / K ink channel (and, as far I know, the BMP file format can't be in CMYK). – If you open a 1-bit BMP in Affinity, it gets opened as RGB. Then you can convert it to CMYK or grayscale and edit its colours but you can't save or export a BMP file format in Affinity.

An EPS is a container file format similar to PDF, both types can contain pixel + vector data. If you open the EPS in Affinity you should be able to edit its colours.

• MacBookPro Retina 15" |  macOS 10.14.6  | Eizo 27" | Affinity V1  
• iPad 10.Gen.  |  iOS 18.5.  |  Affinity V2.6

Posted

@thomaso I could be wrong about what the barcode supplier sent me re: BMP. I asked for 0-0-0-100 not knowing it was not possible. I guess that is why the barcode read a different colour of black after placing into Affinity Publisher, and also opening in Affinity Publisher.

The TIF file can be added into the flattened and press-ready PDF file, or placed into Affinity Publisher before converting to a PDF. It comes in as 0-0-0-100. So that is what I will use, unless the printer complains about me using TIF.

Posted
13 hours ago, thomaso said:

If you open the EPS in Affinity you should be able to edit its colours.

@thomaso for the EPS version of the barcode (for Amazon), I followed this route and it worked. Thank you.

I will use the TIFF file for IngramSpark as it is easier for me. I simply Add image the existing barcode file I have into the PDF using Adobe Acrobat Pro XI.

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