XnView Software

Yes, pictures are now rotated altering the Exif orientation.
This is very good for images whose dimensions are not multiple of 8, however pictures whose dimensions are multiple of 8, IMHO, should be rotated in the standard lossless rotation way. I mean according to jpegtran rules

Please, add this type of rotation to View and Slideshow mode as well

Thanks for your patience

Maybe Photo App adds Exif information?
Try the same step I did
Photo App lossless rotation is a fact, it isn't my opinion

I used Exiftool to obtain information from the picture before and after Photo App rotation.

Before
ExifTool Version Number : 9.03
File Name : lav (04)_1377164681_675x0.jpg
Directory : F:/Documenti/Download/Y - Video - Audio Editing/MkvToMp4_0.224/Tools/ExifTool
File Size : 114 kB
File Modification ...

No problem to rotate without crop, as you said, simply leave 'Use lossless rotation' not checked
Rotation isn't lossless
I don't know how it does, but Photo App applies lossless rotation.
You can test with Paint.NET

open the copied, rotated file.
Edit...Select All
Edit...Copy
File...Open (..then ...

Yes I did, but it doesn't work. Rotation is always lossy. If I check even "Use lossless rotation (if possible)" XnViewMP crops the image, and I don't want this.
Photo App does a lossless rotation of the image I attached, XnViewMP doesn't

Hi,

Photo App of Windows 8.1 and 10 is able to apply lossless rotation of images whose dimensions are not multiple of 8 and the images are not cropped. Photo App modifies Exif orientation. I opened the images in PowerDirector and they are rotated
Please add this feature to XnViewMP too

Yes, in all modes including slideshow

Please, reconsider my request

The problem was that I didn't have user permissions on that folder
I apologize

Thanks for your support

Yes

XnViewMP should have a smart behavior and it should use the same shortcut to apply normal rotation and jpeg lossless rotation according to the source file.
So if a file is a bitmap it should apply a normal rotation but if the image is jpeg it should apply a lossless rotation.

Hi,

I can't do jpeg lossless rotation.
I have this error message "An error occurred, the lossless rotation can't be executed."


XnViexMP 0.71 x64