How do I verify orientation of photos attached from my phone before posting or change it once its posted?
Question: Why is my picture loading sideways?
Answer: Because that's how you held your phone when you took the shot.
Don't worry you don't have to read that article, kudos if you do. EXIF Data is basically the config information of a photo. On modern cameras it can give you the dimensions, the geotags of where and when it was taken, and most relevantly the ORIENTATION.
What does this mean for us:
Simply put, the forums don't read EXIF properly; like at all, ever. So when you took that photo of your bike at that really fancy dutch angle or with your IPhone 7+ on its side so you could truly take in the magnitude of that SICK flame job on your tricked out mini-van the forum doesn't notice. It will show that photo upright based on where the top of your phone is.
We need to edit the orientation of our photos manually. This means with software like Paint or Photoshop, not just turning their phone because the screen auto-fixes.
Hope that helps a little.