[wp-trac] [WordPress Trac] #57975: Uploading iPhone JPG images with EXIF data causes unwanted file modifications.

[WordPress Trac]

#57975: Uploading iPhone JPG images with EXIF data causes unwanted file
modifications.
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 Reporter:  hbaumhardt      |       Owner:  (none)
     Type:  defect (bug)    |      Status:  reopened
 Priority:  normal          |   Milestone:
Component:  Filesystem API  |     Version:  6.1.1
 Severity:  normal          |  Resolution:
 Keywords:                  |     Focuses:
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Comment (by hbaumhardt):

 Additional information:

 (1) Using the default GD Library all native wordpress image resizing
 disabled.

 (2) Uploading EXIF tagged JPG images of any size or orientation from Apple
 or Android devices works PERFECTLY with no image changes or manipulation
 by wordpress. Raw image files are preserved intact with metadata AS
 DESIRED. No additional ImageMagic libraries required thankyou.

 (3) Except SOME (not all) portrait orientend images are converted to the
 *-rotated.jpg format which inflates the file size and strips metadata.

 Affected images can originate from Apple or Android devices.
 Affected images can be uploaded to WordPress direct from originating
 device or via PC browser.
 Affected images can be of any size tested 10Kb to 10Mb
 Affected images all have EXIF Orientation metadata [Rotate 270 degrees]

 So it looks like the GD Library is acting on the Orientation metadata to
 refactor the image totally unnecessarily as the images start in the
 correct orientation.

 If this is infact by design an ingore filter option is required to work
 around the issue.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57975#comment:3>
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