Problem with resolution

[WillyWonka]

Hi all!

I'm a beginner in GIMP, using a version 2.10.14. My aim is to create a set of different postcards.
I have the following problem with resolution: I found an image with a resolution 1000 by default, in 'Scale image' menu I change it to 300 dpi and to 10x15 cm the size.
Then as usual I export it in JPG format, and close the program.
In the folder in metadata I see the correct resolution and size how I set it up, but when I open this image in GIMP again, open 'Print size' menu I see a resolution 72 instead of 300, and a different size.

Could anyone please guide me what I did wrong, and how to save these options for further work with the images?
Also I'm afraid of having incorrect resolution/size because I need many copies at once and I would get incorrect postcards at the copy center.

[Ofnuts]

Some background info: https://www.gimp-forum.net/Thread-Image-size-in-Gimp

Otherwise can you attach the JPEG here?

[WillyWonka]

Sure, here is the link to the image, it's too big to attach it here
https://drive.google.com/drive/folders/1...sp=sharing

And also a screenshot of what I see right after I opened GIMP again

[rich2005]

(05-26-2024, 12:54 PM)WillyWonka Wrote: Sure, here is the link to the image, it's too big to attach it here
https://drive.google.com/drive/folders/1...sp=sharing

And also a screenshot of what I see right after I opened GIMP again

From memory (never reliable) it was, at the time, a bug in the jpeg library. (or was it the exif lib)

   

Using Windows ? Why not update to the latest version.

For printing 10 cm x 15 cm it should not make any difference, the pixel size remains the same and the printer will fit it accordingly. Note the depth, not 15 cm - that is the aspect ratio, start again, crop to 10:15, then scale to 300 ppi.

[WillyWonka]

You're right, that was a bug, the latest version works fine!
Thank you!