Just a couple questions that I can't seem to find the answer for online, so I figured I would ask here.

Online, it says that editing a photo with 8-bit precision is easier on a computer's RAM, and reduces file size. I have no trouble with RAM usage, and I shoot a lot of my photos in 16-bit RAW format, so I edit photos with that. However, I'm VERY interested in the reduced file size.

It seems to me that if I edit a photo in 16-bit and then convert it to 8-bit precision after I'm done, it still makes it may smaller in size...and flipping between 16-bit and 8-bit via the history tab, I can't see an actual difference. Does anyone know what actually happens to the photo if I switch to the 8-bit precision after I'm done editing? And what's the difference between just using 8-bit precision and using indexed colors, since I can see a VERY visible difference if I index the colors as well.

I'd really like to know how much information I'm losing if I switch to 8-bit precision, without indexing, after I'm already done editing the original 16-bit photo.

Thanks!

Edit: Looking at the colorcube analysis, both the original 16-bit and converted 8-bit PNGs have the same amount of unique colors. Obviously, the indexed version only has 256. Does this mean that if I don't index, no actual visible information is lost by converting it to 8-bit?

Hi
I have my image on my monitor that looks good to print. But when I print it; it looks much darker then it did on screen.
So how do I lighten it please?
Thanks

An image is worth a thousand words:

   

For all the pixel-art authors out there.

As usual download is here.

I don’t understand what I’m doing wrong all of a sudden. If I right click and copy and image from the net, then paste it as new image into Gimp, when I select the scale option from ‘Transform’ the image disappears and leaves me with that chequered background. I can see the selection lines of the image, and can change the size, but where’s the image??

I have GIMP 2.10 installed on a MX Linux 19.4 machine, followed instructions on this post to get arrows from GimpHelp, but can't figure out how to make it work, what I'm missing?
ps: I can see the arrows at the right panel, but couldn't copy it to the new layer. Please see the attached file.

Attached Files

Thumbnail(s)
   

Here is the brush, there is no other colors, than white, red, green.

   

Load it as an image in GIMP
Ctrl + A then Ctrl + C
Create new doc then Select that brush (Clipboard Image, first in the brush list)
Spacing 1
Force 70
   

Make a square....
do you got some black stripes?

Even worse...
Try Dynamics / Untitled >  Edit dynamics check "angle with Fade"
   

Fade length ~100
Repeat > Sawtooth wave (or any repeat will do)
   

Make a square...
Is it only me getting those black things?

   

So I tried to save it as a brush.gbr and put it in the brushes folder => same things happening
I tried also to select without feather =0 > shrink 3 pixels
same thing is happening but sharper....
And if you change the size of the brush (like smaller) it's even worse than above

Patterns that I saw (it's more obvious with dynamics):
drawing right to left is better (less black)
drawing bottom to top is better (less black)
drawing left to right is the worst
drawing top to bottom is the worst as well
reducing Force below 30 have a better effect, (less black parasites) but the candy alike is not sharp enough anymore > and goes on the blur side...

I'm getting out of ideas...
buntu 20.04, GIMP 2.10.24/25 PPA/appimage
did try also on my kid computer > MX Linux 19.4 GIMP from the original repo (Debian) 2.10.24, same problem

I am using a Windows 10 machine and I tried to customise a folder icon using an .ico file from GIMP. It get stretched across the x axis. Y remain fine. Any ideas why ? I am using a 64x64 px size PNG and ICO.


   

original

Attached Files

  folder.zip (Size: 4.86 KB / Downloads: 342)

i want to color shift this image to be insted of gray and purple, gray and yellow. everythink ive tried doesnt work for some reazon when i manualy color it yellow it just turns into gray

Attached Files

Image(s)
   

Yes , sorry to say - but we are creatures of habit (Well I am)

I like my interface (main window) to be set up like describe and shown  in the Gimp Docs https://docs.gimp.org/2.10/en/gimp-conce...indow-mode
So we are talking Single Window Mode and please pay attention on dock 4 and particularly dock 5 (see the posted url above) on the right side

But I got this when I for some time ago updated Gimp
https://imgur.com/yfDXnEh
The "Layer" dock no. 4 is now at the bottom and Dock 5 is at the top compared to the usual "standard layout"
....

When I try to rearrange, I loose the dock at the the bottom in the right corner and are left back with only ONE big right dock
Then I can make a "hang-loose" dock and but it on where I like it to be - but you know its not the same - see:
https://imgur.com/kM4gDZl

How can I get back the two docks on the right side (without reset all setting)?

Hi
I created a mask on an image that I was working on some time back. I want to use the mask again to rework that image. I exported and save the mask as a .jpeg file and I still have the original image. 
However, when I endeavour to open them, I cannot get the "Mask" to display next to the original image on the same layer as it did when I first created it. 
I read somewhere that holding Ctrl / Shift keys down at the same time would open them together but I cannot make this work. 
I can open them both as stand alone images, or as layers, but not as an Image / Mask.
Could someone please suggest a tutorial that could explain this process or perhaps give me a description of what I need to do and attach to this thread. 
Many Thanks
Gazza