Hello friends,
Do you know a way to straighten a photo that is displayed upside down when I want to include it on a topic of a site. 
These photos taken on the phone, I straighten them with Shotwell then I record. When I post these photos, they are the wrong way round.
Thank you for your help 
You could edit them in your phone, or export them to your pc and use a photo edit application like gimp to rotate them.
If you want to rotate at 180°
magick my_picture.png -rotate 180 my_picture_rotated.png
I do it with Shotwell.
I have no experience with Shotwell. Maybe it’s easier to use a command like @archus suggested above. Or, use “convert”
$convert -rotate 180 input_image output_image
Write a script to easily convert all if you want.
I think I know what you mean.
I seem to remember that after rotating and saving in the Shotwell viewer, the picture was not rotated when I opened it in other apps etc
I think this is why
LOL, that’s a feature of gnome software?
Non-destructive so the original is preserved. Some GIS software pckages have the same feature. There are QA/QC, and occasionally, legal reasons that the original always be preserved. Having to export the manipulated image adds a level of redundancy (assuming the original was backed up) and “idiot proofing”.
Thannk you but Is there an equivalent to Picture Resizer (for windows 10-11) for Linux?
@NoBoss Although I too use Shotwell to manage my photos, I use Gthumb to edit crop rotate etc
https://help.gnome.org/users/gthumb/stable/index.html.en
sorry @chroot 
It doesn’t work any better… 
Well, you could turn your monitor upside down @NoBoss.
After you do a 180 in your viewer, don’t forget to save your changes. GIMP works.
I just opened a screenshot png in gthumb, rotated it by 90 degrees twice so that it was upside down
And then I saved it
Then I opened it with feh, pinta, Gimp, Inkscape, LibreOffice draw, Firefox and Chromium and in all cases it was shown upside down.
Did you save it (or save as) after rotating?
I also then rotated it using pinta (pretty much like Gimp lite or Windows Paint) and saved it and it was then the right way up again in Gthumb.
Another Gnome application. Appears non-destructive photo editing is baked into gnome.
Open a screenshot in Gimp and rotate it. After saving it, open the image with feh or gthumb.
I just did it. Rotated with Gimp and used the “Overwrite…” option to save it. Opened the rotated image in sxiv and feh.
Sorry not on Phone but on my computer this is what I do:
24 Feb 23 @ 15:48:09 ~
$ cd /media/5/images/
24 Feb 23 @ 15:48:48 /media/5/images
$ meta
↓ jpg found
Warning: ICC_Profile deleted. Image colors may be affected - 3+.pair.jpg
Warning: ICC_Profile deleted. Image colors may be affected - COMP.jpg
Warning: ICC_Profile deleted. Image colors may be affected - Happy·Birthday·Linux.jpg
Warning: ICC_Profile deleted. Image colors may be affected - Lily-Disabled.jpg
Warning: ICC_Profile deleted. Image colors may be affected - My.weather.jpg
Warning: ICC_Profile deleted. Image colors may be affected - Que.miras,bobo.jpg
Warning: ICC_Profile deleted. Image colors may be affected - VI_V_IV_Vikings.jpg
91 image files updated
48 image files unchanged
↓ jpeg found
6 image files updated
2 image files unchanged
→ no JPG's
→ no JPEG's
↓ png found
Warning: [minor] Text chunk(s) found after PNG IDAT (fixed) - Vector_Video_Standards.png
3 image files updated
12 image files unchanged
→ no PNG's
→ Removing *_original files
24 Feb 23 @ 15:48:53 /media/5/images
$
As you see I forget to do it sometimes… until prompted.
Go to hades GNOME!
#!/bin/bash
# remove meta data from images
# this version will work only in current directory.
# added " -r " to do sub directories
shopt -s nullglob
set -- *.jpg
echo " "
if [ "$#" -gt 0 ]
then
echo " ↓ jpg found"
exiftool -all= -r *.jpg
else
echo "→ no jpg's"
fi
set -- *.jpeg
echo " "
if [ "$#" -gt 0 ]
then
echo " ↓ jpeg found"
exiftool -all= -r *.jpeg
else
echo "→ no jpeg's"
fi
set -- *.JPG
echo " "
if [ "$#" -gt 0 ]
then
echo " ↓ JPG found"
exiftool -all= -r *.JPG
else
echo "→ no JPG's"
fi
set -- *.JPEG
echo " "
if [ "$#" -gt 0 ]
then
echo " ↓ JPEG found"
exiftool -all= -r *.JPEG
else
echo "→ no JPEG's"
fi
set -- *.png
echo " "
if [ "$#" -gt 0 ]
then
echo " ↓ png found"
exiftool -all= -r *.png
else
echo "→ no png's"
fi
set -- *.PNG
echo " "
if [ "$#" -gt 0 ]
then
echo " ↓ PNG found"
exiftool -all= -r *.PNG
else
echo "→ no PNG's"
fi
# rm *_original files created by exiftool
set -- *_original
echo " "
if [ "$#" -gt 0 ]
then
echo "→ Removing *_original files"
rm *_original
else
echo "→ no *_original files found"
fi
exit
I thought my tests showed that if you save it after rotation in Gthumb then its not ‘non destructive’ (i.e. the file itself has been changed, not just a flag) since the rotation is then still there when i reopen the file in all the other apps I mentioned, including Gimp.
My bad. I misread that.
I’m not surprised. I dont make much sense
God i hate writing on discord on my phone. Its a nightmare
You’re good. Listening to music and reading too fast on my part.
I installed Picture resizer on it works without problem. Too bad, I keep… 