I recently uploaded this image in chat.
However, on upload, the image was rotated 90 degrees to the right, for no obvious reason that I can discern. I didn't ask for it!
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[michael@challenger:~]$ jhead DSCN0873.jpg Header missing JFIF marker File name : DSCN0873.jpg File size : 120421 bytes File date : 2008:12:27 15:08:01 Camera make : NIKON Camera model : COOLPIX S51 Date/Time : 0000:00:00 00:00:00 Resolution : 600 x 800 Orientation : rotate 90 Flash used : No (auto) Focal length : 7.9mm (35mm equivalent: 47mm) Exposure time: 0.0031 s (1/320) Aperture : f/6.9 ISO equiv. : 100 Exposure bias: -0.70 Whitebalance : Auto Metering Mode: pattern Exposure : program (auto)
Looks like the rotation metadata got missed due to the missing header.
After fixing header:
cp DSCN0873.jpg DSCN0873-fixed.jpg jhead -mkexif DSCN0873-fixed.jpg jhead -te DSCN0873.jpg DSCN0873-fixed.jpg
But wait! Those dimensions... let's just nuke the rotation data:
jhead -norot DSCN0873-fixed.jpg
So as it turns out, imgur was acting correctly.