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+--- Thread: Trying to append part of image to the edge of the same image. (/Thread-Trying-to-append-part-of-image-to-the-edge-of-the-same-image)
Trying to append part of image to the edge of the same image. - Denarius - 06-29-2025
I have a PNG image that I need to widen about 5 millimeters to accommodate a bleed for printing. I’m trying to take a slice from the edge and append it to the same edge to create a wider image.
So I use the Rectangle Select and select a thin slice. Then I copy it and paste it back into the image. But it pastes as an outline only with no color fill. When I try to move it into position at the edge of the image, it remains only an outline with no color.
I noticed that if I paste it into a new image, it has the color fill. But then I try to copy it from the new image to the original image, it’s only an outline again.
With a bit of googling, I learned that the slice I copied was a “floating selection.” At Google’s suggestion, I tried “anchor layer” and the image is the same as it was originally. I don’t see the new copy and pasted slice.
So Google said maybe the canvas is too small to show the added slice. So I enlarged the canvas but I still don’t see the new slice.
What am I doing wrong? Very grateful for any assistance.
RE: Trying to append part of image to the edge of the same image. - Ofnuts - 06-29-2025
Why still on Gimp 2.8? You should be using at least Gimp 2.10?
I think your problem is that you can't paste outside the bounds of the target layer. When you increase the canvas size, you have the option to enlarge the layers to suit. If you do so, you can now paste into the new area of the layer.
This said:
- You don't need to paste into the existing layer, you can paste above it as a new layer and move the paste area to the side
- You don't even need to copy/paste. Just duplicate the layer, and use the move tool to shift the bottom one to the side, so that the added area sticks out from under the top layer (use the Move the active layer option for this)
RE: Trying to append part of image to the edge of the same image. - zeuspaul - 06-29-2025
When I duplicate the layer I then do a horizontal flip (layer/transform/flip horizontal) and then move it into position. Then layer merge and crop. Flipping the layer makes for a good match at the join although probably not necessary for 5 mm.
RE: Trying to append part of image to the edge of the same image. - rich2005 - 06-29-2025
Yes, I flip as well + use 50% layer offset.
Any old chance to get my Gimp 2.8 appimage out so my suggestion in 3 1/2 minutes
https://filedn.com/lkb9dw6mEfXSsOu9uKLaM14/bleeds.mp4
RE: Trying to append part of image to the edge of the same image. - rich2005 - 06-30-2025
Just a possibility. Only for Gimp 2.8 / 2.10 an old RobA script filltrans.scm (attached)
Add a transparent border: Layer -> Transparency -> Add Alpha Channel then Image -> Canvas size
Apply the script Layer -> Transparency -> Bleed Colors into Transparent areas.
[attachment=13660]
Edit
@Denarius As Ofnuts mentioned, you should really update to at least Gimp 2.10 (if possible) That gives more options such as this, using the gimp_gmic_qt plugin one of the many filters Frame -> Mirror. The size is a percentage, probably best to make oversize and crop down, but it is quick.
[attachment=13662]
RE: Trying to append part of image to the edge of the same image. - Denarius - 06-30-2025
(06-30-2025, 07:13 AM)rich2005 Wrote: Just a possibility. Only for Gimp 2.8 / 2.10 an old RobA script filltrans.scm (attached)
Add a transparent border: Layer -> Transparency -> Add Alpha Channel then Image -> Canvas size
Apply the script Layer -> Transparency -> Bleed Colors into Transparent areas.
Edit
@Denarius As Ofnuts mentioned, you should really update to at least Gimp 2.10 (if possible) That gives more options such as this, using the gimp_gmic_qt plugin one of the many filters Frame -> Mirror. The size is a percentage, probably best to make oversize and crop down, but it is quick.
Thanks very much for the help. About using an older version, I'm on a very old computer. I will update soon when I get a new one.
After I posted, I tried again to do it in Paint.Net, and succeeded. I'm always trying both apps when I can't figure out how to do something in one app.
Thanks again for the replies.