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Can GIMP export in tif format without aplha channel? |
Posted by: ajax - 02-15-2020, 09:54 PM - Forum: General questions
- Replies (9)
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![](https://www.gimp-forum.net/images/default_avatar.png) |
A little more than a year ago I posted this topic regarding tif files created by GIMP.
I've now noticed something else about such files which I find strange. It seems possible that this could contribute to some compatibility issues discussed therein. However, compatibility is NOT the only issue.
It now looks to me like GIMP is adding an alpha channel NO matter what I do. For example, I can open a tif format file created by another program and according to GIMP there is no alpha channel. Then I do nothing but export that file from GIMP in tif format. When I subsequently open that file in GIMP it says there is an alpha channel. Furthermore, the newly created alpha channel does nothing. It appears to be completely opaque (i.e., complete white, no transparency). Obviously I don't know what is causing the compatibility problem but I do think I should be able to create a tif file without said alpha channel which would be a format more like what other image editors I'm using do.
Another problem I've noticed with tif files created by GIMP is that they are much larger than what other software would produce for the same image. The tif file created by GIMP is approximately 1/3 larger than it needs to be. The experiment mentioned above where I just opened (input) a tif file and exported it in tif format is that the file grew from 60MB to 80MB. Given that it went from 3 channels (RGB) to 4 (RGBa) that seems like this explains the phenomenom.
What I've been doing for some time now which is quite annoying is opening the files I produce with GIMP using some other editor (typically Rawtherapee), which fortunately is able to open them, and then exporting them again without doing any editing and the resulting file turns out to be about 75% the size of the GIMP produced input file.
It seems like GIMP should be able to omit the alpha channel. I'm hoping I just need someone to explain how that can be done.
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Set Default export folder |
Posted by: RealGomer - 02-15-2020, 09:36 PM - Forum: General questions
- Replies (2)
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![](https://www.gimp-forum.net/images/default_avatar.png) |
For some reason unbeknownst to man or common sense, GIMP insists on export images to the Document folder in windows instead of the Pictures folder. Is there any way to set a folder to be the DEFAULT for exporting.
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changing color |
Posted by: doodle - 02-15-2020, 03:18 PM - Forum: General questions
- Replies (3)
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![](https://www.gimp-forum.net/images/default_avatar.png) |
I hope I can explain this without being confusing. On the old win paintbrush 3.1, it had a great feature which I always wanted to get. Not sure if possible with Gimp 2.10. Win PB 3.1 had an eraser feature that would change one color into another color. Example. let's say you have a checkerboard with all green and all blue squares. using that eraser tool dragging it over the checkerboard ONLY the green squares for example will change to another color you want like red the blue would be untouched. Can that be done with gimp 2.10 or even gimp 2.8? If you still don't get what i mean check out this vid at 1:50 into vid it shows what I am looking for.
https://www.youtube.com/watch?v=qk4WYfq_eVg
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How to add free font to GIMP? |
Posted by: JShapiro - 02-14-2020, 09:02 PM - Forum: General questions
- Replies (7)
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![](https://www.gimp-forum.net/images/default_avatar.png) |
Hi. Very inexperienced user here. I need to write some words in ITC Rennie and make an image out of it, then upload it to a Wix site I operate. I found GIMP online and downloaded it, then downloaded IT Rennie and installed it in the Font Book on my Mac. However, when I open GIMP, I can't find my font on the list of fonts.
For what it's worth, I tried Inkscape right before I found GIMP and the same thing happened. What am I doing wrong? Thanks for your help.
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Mineral palettes |
Posted by: Zero01 - 02-14-2020, 07:07 PM - Forum: Extending the GIMP
- Replies (16)
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![](http://www.planetsmilies.com/smilies/confused/confused0058.gif?dateline=1527799937) |
Just wondering if anyone has a palette pack called "Mineral Gimp Palettes" by Deadened Glow?
I downloaded a zip of these great palettes from DeviantArt a while ago but have since lost them...
Tried to find the page on DeviantArt but the uploader's page seems to be deactivated.
Hoping someone on here can maybe find it and post it (or link to it) on here. The zipped folder name was: "mineral_gimp_palettes_by_deadened_glow.zip"
Thanks!!
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VERY slow resizing in 2.10.14 |
Posted by: daiappy - 02-14-2020, 06:10 PM - Forum: General questions
- Replies (1)
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![](https://www.gimp-forum.net/images/default_avatar.png) |
I often have a photo image, in Gimp, size of up to 5000 x 4000 pxs & maybe 50 or more undo histories, and 20 layers. The image is maybe 600 GB. I FLATTEN the image & delete the undo history, & size is now 58.8GB. When I try to resize the flattened image (to 1800 pxs longest size), the status bar will quickly go 2/3 of the way across the bar and then stop. Then I have to wait often 5 minutes for it to finish resizing. I have 64bit op. system, & tile cache is set to 6GB in Gimp. I have the dashboard open on my toolbox, and it shows no excess or limit when this problem happens. I just have to wait a long long time for it to resize. If I SAVE me flattened image first as an XCF then close the image from Gimp, then reload the flattened 58.8 GB image into Gimp, then resize it, it resizes quickly. Its as if the long time resize is trying to resize all the 20 layers, even though I flattened it. I didn't have this problem before I upgraded to 2.10.14 a month or so back.
Can any one help?
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Fonts Visible In Gimp But Unusable |
Posted by: QuinB - 02-14-2020, 02:31 PM - Forum: General questions
- Replies (1)
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![](https://www.gravatar.com/avatar/1ddc56eb71c7d03cf09be379eb632650?s=100&r=pg&d=mm) |
I've been looking at the 'Why do some fonts have a # at the end and become unusable (under windows, at least)' question.
Gimp fonts list 02.webp (Size: 5.47 KB / Downloads: 258)
Note:
My basic working set is a commercial, OpenType font family, 'Farmhouse'. I have, as yet, done NO work on other fonts or font formats.
I am NOT (yet - give me a few days) a FontForge expert, nor an expert in fonts, generally. I DO have a techie background, however, and know how to burrow.
After a lot of hacking about (thanks everybody who helped out) FontForge shows me that, in my test OpenType font-set, Gimp picks up the 'Preferred Family' string in TTF Names section of Font Information in FontForge or, if the 'Preferred Family' information is unavailable, it defaults to the PS names 'Family Name' setting in the same FontForge section.
Can Anybody Tell Me Why?
Inspecting the font in Windows' Font Preview option in Windows file explorer, the PS Names>FontName seems to be in use; while the received wisdom seems to be 'it's all down to poor work on the part of the font foundry', it occurs to me that picking up a font family rather than a font name is going to cause difficulties.
It also occurs to me that the folk that develop Gimp, like Technical People everywhere, Had A Good Reason At The Time (mostly) and that I'm a noob walking in very late to the discussion.
I'm sure people will set me right if I'm asking a dumb question and I accept that these things can be a lot more complicated than they appear on the surface.
In passing, I've knocked together a quick FontForge script to alter (or delete) the 'Preferred Family' section in TTF Names, so I do have a possible workaround for my own system in place for the time being.
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