Apparently this is a known problem in FF since 2005 and possibly all 
browsers other than Mac (I haven't check the state of the art). The concern 
is that honoring the exif meta-data will break web-pages. In the past web 
pages were made by web developers who would be responsible for orienting 
their own photos. Today, more and more photos posted are coming directly 
from the cameras of ordinary, non-developer users. 

At the moment I'm trying out a FF addon called imagetwist. It allows you to 
orient an image in place. I'd prefer if I could make TW5 apply the change, 
but was hoping to stick with the _canonical_uri approach. Applying some 
type of CSS would mean that I would need to use a macro instead of just the 
plain tiddler. Then again, maybe that's the way to go.

I would not want to physically alter the original image since that would 
almost certainly result in some (small) amount of data degradation plus 
change the original time stamp.

Thanks,
Mark

On Monday, March 27, 2017 at 5:05:54 PM UTC-7, Mark S. wrote:
>
> I'm trying to make my own photo manager. Right off the bat I encountered a 
> problem that some external images are not oriented correctly. The same 
> images often display correctly when displayed through and image viewer. I 
> suppose there is some internal info in the image that is ignored by the 
> browser. Is there some way to give a hint to TW to display the image 
> differently? I'm thinking the hint could be stored with each image so that 
> it displays nicely.
>
> Thanks!
> Mark
>

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