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Change blackest point to ...
Forum: General questions
Last Post: Julienroy
59 minutes ago
» Replies: 3
» Views: 18
Preserving magenta export...
Forum: General questions
Last Post: Whiteshadowzo
1 hour ago
» Replies: 0
» Views: 2
how can I erase a part of...
Forum: General questions
Last Post: Ofnuts
5 hours ago
» Replies: 3
» Views: 36
[Solved] BIMP how to get ...
Forum: Extending the GIMP
Last Post: nelo
5 hours ago
» Replies: 4
» Views: 41
what is best free softwar...
Forum: Watercooler
Last Post: unknown7
6 hours ago
» Replies: 2
» Views: 55
How to remove someone fro...
Forum: General questions
Last Post: timoseewho
7 hours ago
» Replies: 10
» Views: 153
Some customization questi...
Forum: General questions
Last Post: Ofnuts
11 hours ago
» Replies: 2
» Views: 34
Painting a car questions
Forum: General questions
Last Post: Statesman
Yesterday, 11:23 AM
» Replies: 14
» Views: 243
Forum: Extending the GIMP
Last Post: dinasset
Yesterday, 07:35 AM
» Replies: 4
» Views: 92
Erase several horizontal ...
Forum: General questions
Last Post: rich2005
03-17-2018, 06:39 PM
» Replies: 2
» Views: 59

  Preserving magenta exporting to .gif
Posted by: Whiteshadowzo - 1 hour ago - Forum: General questions - No Replies

Hello forum

Just created an account to ask this question. 

Have the most up-to-date version of Gimp.

Trying to create a graphic for a map-maker software for a boardgame. Software designer states graphics must be .gif on a true magenta background which the program will read as transparent. 287x287px

Here is a pre-programmed graphic on the default map background


And here is the file in the program's graphics folder


So I figure I would try my hand at making some add'l tree graphics for variety sake. Now, disregarding the anti-aliasing around the tree image I add which gives a magenta-ish outline the background does not stay true magenta when exported as a gif. Therefore the software adds the magenta-ish color.


 Saving the file as a gimp file and reopening the color reads 255,0,255 per the color picker. But exporting to .gif and reopening the color reads 253,5,255. In fact after writing this post I can confirm .pngs after reopening will also read 253,5,255.

So, is there something I can do to make sure the color stays? 

-Is this simply a matter of fact when exporting to .gif/.png that colors get altered? Well, then how did the software creator manage it?
-Is Gimp doing some magic I'm unaware of? Can someone direct me to some settings to change?
-And what about that anti-aliasing giving those undesired pinks. When I show and hide the magenta layer behind the tree I can see the fringe pixels change from different greens to pinkish-different greens. Anyway to keep that from happening?

Any help or further reading would be much appreciated.

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  Change blackest point to pure black and whitest to pure white
Posted by: Julienroy - 5 hours ago - Forum: General questions - Replies (3)


Quick question, I'd like to make the black to white range broader by changing the blackest point of my picture (let's say very dark grey) to pure black (#000000) and the whitest point (very pale grey) to pure white (#ffffff). The rest of shades should follow accordingly.

I've been messing with the curves in "colors" with no results. I know it's doable in Photoshop, I'd like to use the same function in gimp.

Thanks in advance,

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  how can I erase a part of image
Posted by: renato07 - 8 hours ago - Forum: General questions - Replies (3)

I have an image (Nefertiti head) with an horrible black thin line in the  head profile.
wich is the best way to erase it?

the eraser tool?
I'm wondering if I can use some other way, because this is not so easy for me.



[color=rgba(0, 0, 0, 0.541176)]13/50[/color]

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  [Solved] BIMP how to get its translations?
Posted by: nelo - 10 hours ago - Forum: Extending the GIMP - Replies (4)

Hi all,

I've noticed that in the downloaded sourcecode if BIMP ( Batch Image Manipulation) plugin there are language files.
How can I use them? i.e. how do I get a language other than English?

Some system info: I'm on a Linux Mint MATE 18.3 64bit with GIMP 2.8.22.

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Exclamation what is best free software just for adding professional text , titles ? on video
Posted by: unknown7 - 11 hours ago - Forum: Watercooler - Replies (2)

what is best free software or website (do not have good internet@~) just for adding professional text , titles on videos ? ready for use with many templates? or it able to make!
 i can find free and open source video editors but , text feature is not good on it! so which you think can do it !

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  Some customization questions
Posted by: Hollie By Golly - Yesterday, 01:15 PM - Forum: General questions - Replies (2)

1. Is there a way to taper brushes when using a tablet? 

2. I don't like how the all of the brushes share the same settings. Is there a way I can have the eraser have one setting (size, brush type, etc) while the brush has another?

3. When I move layers around I like to move the current layer. I have to change this setting every time I open up GIMP. Is there a way I can change this preference?

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Posted by: dinasset - 03-18-2018, 04:27 AM - Forum: Extending the GIMP - Replies (4)

Another filter for 2.9.9
This one was initially inspired by a mural I've seen on my town:
the author -instead of painting the whole image- only painted:
- in white the lightest parts of the image
- in black the darkest parts of the image
I liked it.
Hence I created a filter which separates (using threshold):
- the values of the image between 0 and the first stop (default 85)
- the values of the image between the second stop (default 170) and 255
As BG i used a layer filled with a bricks pattern.
Over the BG there is a layer for the "whites" and the layer for the "blacks".
The intermediate values -remaining transparent- show the BG bricks.
So I got what I liked.
Afterwards I added some options to this filter:
- the possibility to use whatever BG is wanted by the user
- the possibility to replace white/black with a duotone:
  if the user has changed BG and/or FG colours, those two are used
  if not default yellow and blue are used 
- the possibility to let the lightest/darkest values to maintain the original.
Here the filter.
Hope someone likes to test it.
Comments/critics/suggestions are welcome.

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.7z   DIEGO_HaveFun_GraphicaBTW299.7z (Size: 2.2 KB / Downloads: 3)
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  Erase several horizontal pixel lines
Posted by: Lisandro Amado - 03-17-2018, 06:05 PM - Forum: General questions - Replies (2)

Hi! I am wondering ir there's some way to erase an array of complete lines of pixels from an image. I want to convert am image to a ser of thin horizontal lines over an alpha background. Might that be possible? I guess it's easy with some coding. Thanks for reading!

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  resolution and quality issues
Posted by: alin33 - 03-17-2018, 04:24 PM - Forum: General questions - Replies (2)

I'm creating digital art in gimp which is printed in big sizes also(18"x24" 300 ppi).When I create the art I give the max dimensions to the image(18"x24" 300 ppi)
Now there are additional graphics and elements I want to add to the image-the graphics I want to add are 300 dpi but smaller in image size-so I need to scale them-so they fit my big document-I'm afraid that during the scaling of the outer graphics their quality will be lost-I'm trying to understand what happens to resolution if scaling-My main concern is the quality of the digital art-the final product-I need it to be 300 ppi at big size(18" 24")so just want to understand the wise way to use external graphics -and how to scale them without harm to the resolution and quality-I'm trying to understand what happens to the quality when I scale this external graphics-do they lose their quality? Does their resolution change? Does resolution in general changes during scaling?

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  How to remove someone from a picture?
Posted by: timoseewho - 03-17-2018, 05:31 AM - Forum: General questions - Replies (10)

hello all! so i'm extremely new to photo editing but i was given a task to edit someone out of a photo haha. i did a bit of digging and came across the Resynthesizer tool, using the Heal Selection subtool. i've gone ahead and did what this thread https://www.gimp-forum.net/Thread-Resynt...or-Windows said to do, but when i open up Gimp, i don't have Heal Selection under Enhance, but i do have Resynthesizer under Map. what am i doing wrong?


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