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change background of transparent png to that of pdf

Jun 21, 2011, 16:46
Post: #1
change background of transparent png to that of pdf
I created a transparent digital signature png from a scanned original handwritten signature.
It works fine for adding a signature to pdf documents with a white background.

For those times when the background is other shading/pattern, say a 'grayscale' looking shading/pattern...I want to 'adapt' the background of the signature.png to that of the pdf.

So in practice open the pdf, select an area that has different shading/pattern up to the clipboard, and make the background of the signature the same as that in clipboard; with hopes the background will 'blend' into the pdf.

Ty!Smile
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Jun 21, 2011, 17:36
Post: #2
RE: change background of transparent png to that of pdf
Much better solution: have a signature on transparent background (see http://gimpforums.com/thread-changing-a-...parent-png), then the original background, whatever its style, will show through.

Now answering your questions on
https://Gimp-Forum.net
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Jun 22, 2011, 19:57
Post: #3
RE: change background of transparent png to that of pdf
Thank you for the reply!

Followed the suggested steps but got lost here:
"- use Color/Color to alpha with white (it will only applies to background and logo border)"

I did the original scanned signature steps from youtube video.
Create A Digital Version of Your Signature.
Maybe there was a missing step?

Do you have a preferred link for doing the entire 'transparent' scanned signature step-by-step?
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Jun 22, 2011, 20:29
Post: #4
RE: change background of transparent png to that of pdf
Color/Color to alpha is "Colors" in the menu bar of the Image window, with "Color to Alpha" as a choice towards the bottom. The dialog lets you pick a color (white by default).

Now answering your questions on
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