See the original image at https://drive.google.com/file/d/0B0Jnpz9ldbuHN29mM3NJdUlWUU0/view?usp=sharing and the flipped version at https://drive.google.com/file/d/0B0Jnpz9ldbuHaUdjMkFsV3dncjQ/view?usp=sharing . Both are PNG images. The first one is scanned. Then I copied it, opened the copy in Gwenview and rotated it twice, obtaining the second image. I called `identify -verbose` from Imagemagick on both images. The (abbreviated) diff between the two calls is below: 1c1 < Image: image_original.png --- > Image: image_flipped.png 6,7c6,7 < Resolution: 118.11x118.11 < Print size: 21.59x29.7011 --- > Resolution: 31.89x31.5 > Print size: 79.9624x111.365 (...) 80c80 < png:pHYs: x_res=11811, y_res=11811, units=1 --- > png:pHYs: x_res=3189, y_res=3150, units=1 (...) The metadata has changed. This shouldn't have happened. Reproducible: Always Steps to Reproduce: 1. Open the attached image in Gwenview 2. Rotate it twice (to flip it upside-down) 3. Save the rotated copy 4. Call `identify -verbose` on both images 5. Observe the difference Actual Results: The metadata has changed. Expected Results: Metadata should have stayed the same.
*** This bug has been marked as a duplicate of bug 278661 ***