Hello,

I would like to use Gimp to prepare files for riso printing and for this I need to convert each individual color layer from opacity (x%) to greyscale ((100-x)% luminosity).

Precisely, this is the conversion I need:
- [color] at 100% opacity -> black
- [color] at 75% opacity -> grey (25% luminosity)
- [color] at 50% opacity -> grey (50% luminosity)
- [color] at 31 % opacity -> grey (69% luminosity)
etc.

And [color] can be replaced by any existing color. I have one layer per color.

Would you know how to do this? In Photoshop, there is a shortcut to do this at seen here: https://youtu.be/UrFq5KliP04?t=263
This is exactly what I would like to reproduce.

Thanks in advance for your help.

I've got a ~1000 year old manuscript (ink on vellum) that needs to be enhanced so its easily legible when printed in black and white.  I'm including an image from a representative page:
Image

I've played around with the GMIC filters and produced the second image at the link above, but I'm hoping we can get it cleaner (it's super dark and all the dirt/damage is still there). In theory, the ink should be a different color set then the dirt/damage and so I was hoping it would be possible to do something like:
1) Use the color picker to identify the ink color
2) Use some tool to select everything within a certain margin of error of that ink color
3) lift it and add it to a white background

I don't know if that's possible or how to do it.  If anyone can help with a guide on what to do (all ideas are welcome) it would be much appreciated.

thanks!

Hi there,
I am working on a project in gimp, I am using a font that I modify sometimes with the software fontforge (it's part of the project). The font is in .local/share/fonts/. The folder GIMP_FOLDER/fonts is empty. The program LibreOffice acknowledges the changes instantly. But Gimp won't. How do I get gimp to re-load/update the fonts ?

In my first post you helped me figuring out how to do the character writing square. Now it is time to add characters and I am facing several roadblocks.

I am using GIMP on an Mac M2 Air, so that might be a reason for the first problem.
1) I have fonts available in Microsoft Word that are not available in GIMP. The fonts I want to use are listed after Wingdings in Word (which is not where they should be alphabetically listed). I am planning on using either BiauKaiTC or Kaiti TC. 
How do I get these fonts to be available in GIMP?

2) I want the character to be drawn with a black edge only. How do I do that?

3) I want to fill the strokes of the characters that are being drawn at that step. It is a problem to just use the filler when the a part is directly connected to the first part, but not to be drawn before the next step. How do I put a "block" on where the filler can fill up to?

4) How can I make thin lines with arrows to show where to start, turn and end the stroke?


I am attaching a picture that gives an idea of problem 2) and 3). I want a different approach, because I want the arrows as well. I hope the picture explains some of the complications.
   

Hello,

is it possible to save ALL open files in one click?
This would save me a lot of time...


Thanks !

I use my phone to read new posts, sent via a, feed reader. When I click through the reader to the, actual page the text is tiny. I have to turn my phone to landscape view, then do lots of scrolling. 

Is there a way to fix this, on my end or the web manager?

does anyone know if i can convert 1000's of png files in to SVG files using Gimp?
Iv seen a few videos on how to do single files, but i have 16000 files i need to do.

thanks for your help.

I am running GIMP 2.10 from the Linux Environment in ChromeOS.

Copy and Pasting an image, either with the keyboard shortcut or the right click menu, always results in me pasting the image AND the mask. the mask image mask is colored black. i want to paste just the image without the mask. I have tried dragging the clipboard image from the buffer menu and it works, the image is intact, it's just when pasting with ctrl + v and the edit menu that this happens. 

the issue also shows up when copy pasting from a selection.

How can i copy an image and paste just the image? is there a setting that i missed? 

i never had this issue before while i was using it on a windows pc.

I am wondering if it is possible to add text to a single image that reads "Gameplay - Part 01" and generate a duplicate image with the text "Gameplay - Part 02," and so on, using an automatic process to ensure consistent text placement.

Here is a reference on my Google Drive.
https://tinyurl.com/2dn854pz

Thank You.

Hi,
I've been having an annoying problem with gimp's cursor. When I click on the canvas, a sort of small ripple-effect appears around the cursor, like I'd be selecting a page or something. Then when I press down for more than a very short moment, a white circle appears around the cursor for a moment before giving me a small drop down menu. It's super annoying and I can't seem to figure out what causes this, as it works normally around 50% of the time and then starts doing this stuff again all of a sudden. 

I'm using a lenovo computer and a wacom intuos tablet with gimp 2.10.12. Any help is appreciated!