Why is the picture upside down?

Question

Images

I can't figure out what the situation is. The girl second from the left is rotated -90 degrees. On the site in some browsers it is also rotated, and in some everything is ok. I open it in Photoshop - everything is right, it stands vertically.
Why is this happening and how to fix it?

Answer 1

Open in Flash, save from jpg to jpg everything is ok! ))

Answer 2

Open photo viewer in Windows , scroll it and close it

Answer 3

Open in any editor and rotate 360 ​​degrees

Answer 4

most likely the camera\phone saves information about the rotation in exif, some programs\browsers take it into account, others may ignore it
if these are original photos after shooting, it is better for the site to crop to the desired resolution, but depending on what size they are, load users 5-20 mb mockery