You have installed Gimp 2.10 and made your latest and greatest image. Now you need to save it as a Gimp .xcf which keeps masks and layers, guides and paths. However the Save dialogue shows this.

   

The file is not compatible with Gimp 2.8 / 2.6 

There are very good reasons for using the new format. Photographers can keep higher image precision, 16 or 32 bit. Artists can use linear mode and the enhanced layer modes. Everyone can use improved layer groups and masks. The new compression format makes smaller file sizes and is supposed to be more robust than the older compression format.

When Gimp 2.10 starts, there are some settings that are different to Gimp 2.8 There are now Default and Legacy options for layers and some of the tools. There are also new settings in the Advanced Options in File -> New The same settings can be accessed in Image -> Precision

   

Why might you use these new settings. For example, artists will like Linear Light which correctly blends colours when using the paint tool, gradient tool and shown here the fill tool. No more dark borders.

   

But for whatever reason you need the old .xcf format.

You need to change the various modes to Legacy That includes checking each layer separately the Default -> Legacy toggle is not universal.
Go into Image -> Precision and enable Perceptual Gamma(sRGB) and 8 bit

And all being well, you get a Save dialogue that looks like this, without the compatibility warning (just keep the new compression off).

   

Hi folks,

First post here, so hello all

I'm very much a beginner with GIMP, and just learn by clicking on tools and playing with them to see what they do, and anything I cab't figure out I google and figure it out from there, but I'm having difficulty figuring out how to do something specific here.

I want to apply a gradient of brightness to just a single layer of an image, but for the life of me I can't. I know what to do in terms of applying the gradient, but I can only apply it to the whole image whilst I only want it to apply to one.

In searching for the answer, the best thing I found for my query was this https://graphicdesign.stackexchange.com/...brightness which actually seems to be an answer given by one of the moderators of this very forum, some 6 years ago (the part in yellow near the bottom).

Now, those steps are giving me the exact effect I am looking for, it's just I can't figure out how to apply the effect to a single layer. I have no issue applying other effects to a single layer, so perhaps this can't be done, though I suspect it is possible and I'm just missing something.

Any help would be much appreciated

I wanted to use this specific piece of an image:





I wanted that streak of light to be VERTICAL, though, so I rotated the image, and got:





As you can see, the uppermost and lowermost bits of the image are missing. How can I rotate an image and end up with the ENTIRE image after it’s done?

I'm making a checkerboard for a board game. Using the GEGL operation checkers. Trying to make it 11cm tall by 13cm wide. A total of 143cm cubes. This attachment is the best I can do but its one pixel off and zoomed out 33%.

Now that GIMP V2.10 is getting close I'm curious about intended compatibility with the .xcf files produced by prior versions of GIMP.  In my case the prior versions are pretty much limited to Version 2.8.xx.  However, I suspect for some others the question may be more general.

More specifically, I've been saving the .xcf files associated with images that have been edited using GIMP with the idea that I could, if desired, resume the editing activity from where I'd previously ended up.  Some limited experimentation has shown that .xcf files created by GIMP 2.8 can be opened successfully by GIMP 2.10.  I have yet to find one that fails but I'm not naive enough to think that might not happen.  In the case of going the other way and trying to open .xcf files created by GIMP 2.10 with GIMP 2.8 it's been a mixed bag.  Sometimes it fails and sometimes it doesn't.  While I wouldn't expect backward compatibility it would be nice to have a way to figure out which version of GIMP created any particular file.  How can that be done?

My inclination is to think that I need to keep GIMP 2.8 around for a while even after GIMP 2.10 is considered stable.  However, the amount of rigor that might be appropriate for keeping track of which .xcf files were created with which version of GIMP depends to some extent on the design intention of the developers.  Since the file extension (i.e., .xcf) appears to remain the same it is natural to expect compatibility.  However, given the amount of new capability offered by GIMP 2.10 complete backward compatibility seems impossible although the intention could be that a .xcf file can at least be opened and that users are informed of compatibility issues.

Obviously this is a topic that one might expect to find covered in the User Manual which raises the question, "is there a 2.10 version?".  If not when might such become available?

Hi! I am new to gimp and just started using it so I could add a website to the bottom right of my photos. I was able to figure this out but I couldn't seem to find a way to save just the text layer. I wanted to open the layer up on the photos from a file and just save rather than remake the text box and have to resize, font and color every time. Is this possible? Thanks in advance!

I selected an area with the rectangular selection tool. Then I checked the "feather edges" check box in the tool options. Adjusting the radius doesn't work.

I went to the select > feather... Then I adjusted the radius in the dialog. Then the feathering works.

Why isn't the first method working?

I'm reading gimp Docs in gimp.org. There is an option called "Save background color" in exporting png file dialog. The Docs says like this.

If your image has many transparency levels, the Internet browsers that recognize only two levels, will use the background color of your
Toolbox instead. Internet Explorer up to version 6 did not use this information.

I tested with 3 layers of transparency. Then I chose the background color of the toolbox yellow. I saved it as png with the option, "Save background color", checked.

I opened the saved png file on firefox. However the opened png file doesn't show the background color, yellow. Why is that so?

I am already using gimp for years, not professionally, but I know most basics.
I also already used google to find proper solution, but all tutorials are not exactly about what I need, so please do not send me links about simple black n white or greyscale conversions.

What I need is to convert colored image to almost pure black n white effect with smooth curves.
I am not talking about greyscale with "desaturate" or 2 color with "threshold".

Original image in lossless PNG.
It has various colors that I want to remove, not making them greyscale.
https://speedstar.itos.pl/gimp/gimp-original.png


Method 1.
I use "threshold" with value 160, which is close to what I am looking for, but the problem is that it makes image pure 2 color, and all curves are not smooth, making no shades between black and white pixels (use pixel perfect zoom withot blurring filters if you are not sure what I am talking about).
https://speedstar.itos.pl/gimp/gimp-threshold_160.png


Method 2.
I use "desaturate" with "average" setting, make duplicate and set layer mode to "dodge", which keeps smooth curves and nicely removes most filling colors, but there are grey fogs that can be noticed on chest, upper leg, and shoe.
https://speedstar.itos.pl/gimp/gimp-desa..._dodge.png


Method 3.
I use "desaturate" with "average" setting, increase gamma (not brightness, because I do not want to touch black color) with "levels" with value 160, increase "contrast" to value 96 (127 makes image 2 color), but I am still getting grey fogs slightly on chest and noticeably on upper leg, and also some lines become too small.
https://speedstar.itos.pl/gimp/gimp-desa...ast_96.png


Method 4.
I use "color to alpha" on all colors, make duplicate and set layer mode to "dodge", which seems to to have better effect than previous methods, but I am still getting grey fogs that can be noticed on chest, and if I use another duplicate and set layer mode to "dodge", then lines become too small.
https://speedstar.itos.pl/gimp/gimp-all_..._dodge.png


Any ideas?
Thanks for any suggestions, and please, lets discuss it like intelligent adults, no useless comments, no childish behaviors.

I'm reading the gimp Docs in gimp.org. I can't understand this part.

If the quality setting found in the original file are not better than your default quality settings, then the option "Use quality settings from original image" will be available but not enabled.

What does "the option is available but not enabled" mean?

Thanks for reading.