How do ROTATE a photo without losing quality?

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Debugger
Posts: 341
Joined: Thu Jan 26, 2017 11:56 am

How do ROTATE a photo without losing quality?

Post by Debugger » Fri Dec 28, 2018 6:17 pm

How do ROTATE a photo without losing quality?
Windows Photo Viewer and IrfanView - it can, but changes the size of the file. :(
I care about the real and original size

tuska
Posts: 127
Joined: Thu Jul 13, 2017 9:14 am

Re: How do ROTATE a photo without losing quality?

Post by tuska » Fri Dec 28, 2018 10:21 pm

Debugger wrote:
Fri Dec 28, 2018 6:17 pm
I care about the real and original size
Such a program could be difficult to find, because even Adobe Photoshop CS6 changes the file size of a .JPG file
when rotating, e.g. from landscape to portrait.

However, the original size remains unchanged, i.e.
ExifImageWidth: 4176, ExifImageHeight: 2784 becomes ...
ExifImageWidth: 2784, ExifImageHeight: 4176

Debugger
Posts: 341
Joined: Thu Jan 26, 2017 11:56 am

Re: How do ROTATE a photo without losing quality?

Post by Debugger » Sat Dec 29, 2018 9:55 am

I downloaded the plugins for IrfanView, but every time I want to rotate image it informs about the lack of a plugin. I have no idea how to solve it.
IrfanView 4.52 x64
C:\Program Files\IrfanView\Plugins\jpg_transform.dll

---------------------------
IrfanView
---------------------------
Can't load PlugIn: "JPG_TRANSFORM.DLL" !
Please install or update PlugIns from IrfanView homepage!
(64 bit)

---------------------------
OK
---------------------------

EDIT:
http://annystudio.com/software/jpeglosslessrotator/
When rotating JPEG photos, most image editors decode the photo, rotate the bitmap and then re-encode it back to JPEG. This process decreases the final image quality. Unlike those tools, JPEG Lossless Rotator does not recode the images and performs a special lossless block transformation instead, which helps to preserve the quality of the images.

tuska
Posts: 127
Joined: Thu Jul 13, 2017 9:14 am

Re: How do ROTATE a photo without losing quality?

Post by tuska » Sat Dec 29, 2018 5:11 pm

Debugger wrote:
Sat Dec 29, 2018 9:55 am
I downloaded the plugins for IrfanView, but every time I want to rotate image it informs about the lack of a plugin. I have no idea how to solve it.
IrfanView 4.52 x64
C:\Program Files\IrfanView\Plugins\jpg_transform.dll

---------------------------
IrfanView
---------------------------
Can't load PlugIn: "JPG_TRANSFORM.DLL" !
Please install or update PlugIns from IrfanView homepage!
(64 bit)

---------------------------
OK
---------------------------
Download IrfanView-64 PlugIns (Version 4.52, EXE-Installer, 25.20 MB)
http://www.fosshub.com/IrfanView.html/i ... _setup.exe
Download IrfanView-64 PlugIns (Version 4.52, ZIP file, 22.70 MB)
http://www.fosshub.com/IrfanView.html/i ... ns_x64.zip

tuska
Posts: 127
Joined: Thu Jul 13, 2017 9:14 am

Re: How do ROTATE a photo without losing quality?

Post by tuska » Sat Dec 29, 2018 5:13 pm

Debugger wrote:
Sat Dec 29, 2018 9:55 am
EDIT:
http://annystudio.com/software/jpeglosslessrotator/
When rotating JPEG photos, most image editors decode the photo, rotate the bitmap and then re-encode it back to JPEG. This process decreases the final image quality. Unlike those tools, JPEG Lossless Rotator does not recode the images and performs a special lossless block transformation instead, which helps to preserve the quality of the images.
… and do you get the real and original size?

Debugger
Posts: 341
Joined: Thu Jan 26, 2017 11:56 am

Re: How do ROTATE a photo without losing quality?

Post by Debugger » Sun Dec 30, 2018 1:08 am

tuska wrote:
Sat Dec 29, 2018 5:11 pm
Debugger wrote:
Sat Dec 29, 2018 9:55 am
I downloaded the plugins for IrfanView, but every time I want to rotate image it informs about the lack of a plugin. I have no idea how to solve it.
IrfanView 4.52 x64
C:\Program Files\IrfanView\Plugins\jpg_transform.dll

---------------------------
IrfanView
---------------------------
Can't load PlugIn: "JPG_TRANSFORM.DLL" !
Please install or update PlugIns from IrfanView homepage!
(64 bit)

---------------------------
OK
---------------------------
Download IrfanView-64 PlugIns (Version 4.52, EXE-Installer, 25.20 MB)
http://www.fosshub.com/IrfanView.html/i ... _setup.exe
Download IrfanView-64 PlugIns (Version 4.52, ZIP file, 22.70 MB)
http://www.fosshub.com/IrfanView.html/i ... ns_x64.zip
I downloaded, installed and did not work!!! :lol:

Debugger
Posts: 341
Joined: Thu Jan 26, 2017 11:56 am

Re: How do ROTATE a photo without losing quality?

Post by Debugger » Sun Dec 30, 2018 1:11 am

Debugger wrote:
Sun Dec 30, 2018 1:08 am
tuska wrote:
Sat Dec 29, 2018 5:11 pm
Debugger wrote:
Sat Dec 29, 2018 9:55 am
I downloaded the plugins for IrfanView, but every time I want to rotate image it informs about the lack of a plugin. I have no idea how to solve it.
IrfanView 4.52 x64
C:\Program Files\IrfanView\Plugins\jpg_transform.dll

---------------------------
IrfanView
---------------------------
Can't load PlugIn: "JPG_TRANSFORM.DLL" !
Please install or update PlugIns from IrfanView homepage!
(64 bit)

---------------------------
OK
---------------------------
Download IrfanView-64 PlugIns (Version 4.52, EXE-Installer, 25.20 MB)
http://www.fosshub.com/IrfanView.html/i ... _setup.exe
Download IrfanView-64 PlugIns (Version 4.52, ZIP file, 22.70 MB)
http://www.fosshub.com/IrfanView.html/i ... ns_x64.zip
I downloaded, installed and did not work!!! :lol:
… and do you get the real and original size?
A little bigger size.

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