Photo editing software for Trisquel?

I know that this might be considered heresy around here, but maybe try wine with photoshop... never tried it myself as GIMP seems more than sufficient for my needs.

It depends what you mean by "photo editing". There are different type of software for different purposes.

I use Darktable to select and improve photos I took with my digital camera. It has filters to correct distorsion of known lenses (if you can't see filters for your lens, you could try to install guix and darktable from guix, there are filters for more lenses available in more recent versions), and a crazy number of features. I most frequently use exposure, shadows and high light and local contrast but now and then I try others. It keeps the original photo file unchanged and writes to an .xmp file the filters that you applied, then you can export to a jpg or similar format. I have not tried Rawtherapee but it does the same.

I find that way of working really suitable for me. Gimp focuses on working on one particular image, it probably can do more things but it is not designed to help improving the photos you take. I find it a bit too complicated for me.

Hi! I regularly do photo editing, too, and years back I decided to use free/libre software solely (which is also the reason why I use and love Trisquel). The latter means that most of the entries on your linked list won't do the job for me ;)

As Avron has already pointed out in reply #2 it probably depends on what you mean by "editing". Here's what I use personally:

gThumb: for casual viewing and basic tasks (resizing, metadata removal, ...)
GIMP: for more advanced tasks on single (or just a couple of) photos/images
Darktable: for editing photo series out of my digital camera (raw files)

The combination of these 3 meets all of my today's needs.
Have fun and luck with finding your own favorites!
Cheers

KDE's digikam can do some impressive photo editing, in case you are looking for an alternative to gimp.

For a super-lightweight image editor with a lot of basic editing options, I use "mtpaint".

I don't do any photo editing but here's some options, some of which may have been mentioned:

https://alternativeto.net/software/adobe-photoshop/?license=opensource&platform=linux

Just installed gThumb and is already feeling like a great addition! This thread is so helpful, thanks to all again!

I though I should share a small mishap during installation though, just in case a new user happens to run into this little problem too.

I entered

sudo apt install gThumb

... and terminal gave me this:

Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package gThumb

It took me a while to see the light, that the problem was nothing more than a capitalised T (gThumb instead gthumb)

So, for completion, this is the one (in lowercase :)

sudo apt install gthumb

ImageMagick

https://imagemagick.org/