Rocket Chat Ignores EXIF Rotation Data, Displaying & Resizing Mobile Uploads in the Incorrect Orientation

[alexmarkley]

Your Rocket.Chat version: 0.48.2 (hosted rocket.chat)

When taking snapshots, many (mobile) cameras save these images in the native orientation of the camera sensor, and only record the original orientation of the camera in EXIF data as a presentation hint.

Here is a screenshot of the mobile upload dialog with the incorrectly-presented image:

For reference, here is the original image with the EXIF data intact: IMG_9444.JPG

Note that this issue affects:

• All clients, including Android and Web
• Images even after they have been posted, so thumbnail presentations and gallery presentations, not just upload previews.
• Avatars also, not just room uploads.

Semi-effective workaround:

Identify the native orientation of your camera's sensor and only upload images which have been taken in the "correct" orientation.

[moisespr123]

Hi. This issue still persists with 0.56. A user in my chat uploaded a picture as avatar and the rotation is wrong. The user says in the PC the avatar image used is shown with the correct orientation.

I have Avatar Resizing turned off as it seems to cause crashing issues.

Update: In the 5th or 6th attempt, the image was shown correctly, but I told the user to manually rotate the image in the PC as sometimes this overrides the EXIF information and actually saves the image with the correct orientation without touching EXIF data.