Til Schubbe wrote:

Hi,

I have a pdf document (one sheet) which contains the background color (white) and a 2nd color (writing, black). How can I replace one specific color in the whole document (the writing color) by another?

I found how to change the color of contigous areas but that's not what I want.

TIA
Til

Hello,

Have you tried "Select->by color" ? (there might be a tool in your toolbox for that, depending on your gimp configuration, it looks like a hand with one finger pointing on 3 colored rectangles). You can set the threshold in the tool options window to refine your selection borders. Then click on the writing to select all of it, and drag and drop the new colour you want to the image window.

Regards,

Olivier.

On 7/11/05, Til Schubbe wrote:

Hello Olivier,

* On 11.07. Olivier Ripoll (durocortorum73-gmane@yahoo.fr) muttered:

Have you tried "Select->by color" ?

Then click on the writing to select all of it, and drag and drop the new colour you want to the image window.

This only seems to work to change the color of the (white) background. It doesn't matter if I drop the color onto the background or onto the black foreground.

That doesn't make sense, but if that's the problem, try inverting the selection. Problem solved. It helps if the fill tool is used on the black text, and if you zoom in (so that you can see individual pixels, e.g. 800% zoom). Then zoom out to see the whole document and see if that works.

You may need to convert the pdf to rgb format and save it as e.g. an XCF, but I doubt this will be necessary. Are PDFs stored as indexed, grayscale, or rgb? I can't remember.

I can't have missed the black color while dropping, because the pdf also contains large black areas.

What can I do to select the foreground (color)?

Regards Til
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Hi,

Til Schubbe writes:

Have you tried "Select->by color" ?

Then click on the writing to select all of it, and drag and drop the new colour you want to the image window.

This only seems to work to change the color of the (white) background. It doesn't matter if I drop the color onto the background or onto the black foreground.

Dropping a color will fill the current selection. It doesn't matter at all where you drop. Make sure that you select the right areas before you fill.

Sven