JPEG lossless croping

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imforumman
Posts: 21
Joined: Wed Aug 23, 2006 2:03 pm

JPEG lossless croping

Post by imforumman » Sun Aug 18, 2019 11:50 am

Hi,

Just started using MP and I'm likeing the feel of it and of course the speed.

If I remember correctly, the non-MP version had the ability to crop jpeg files lossless, a feature I really loved. Has this not been implemented in MP for a reason? Or am I just too dumb to find it?

Thanks a lot for this fantastic piece of software, a second time around.

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masterjp
Posts: 138
Joined: Fri Feb 13, 2009 4:37 pm
Location: Duesseldorf (Germany)

Re: JPEG lossless croping

Post by masterjp » Sun Aug 18, 2019 4:37 pm

Lossless crop is possible in XnViewMP.

Open a jpeg picture.
Select an area with your mouse within the picture.

Look in menu tools => jpeg transformations => crop
PC: Intel 8700k + Asus Z370-F + 16 GB RAM G.Skill
OS: Windows 10 Pro x64 | XN-View 2.49 | XN-View MP 0.93.1 + 0.94 beta #1 | XnConvert 1.80 | Adobe Photoshop Elements 2019 & Elements XXL 6

imforumman
Posts: 21
Joined: Wed Aug 23, 2006 2:03 pm

Re: JPEG lossless croping

Post by imforumman » Sun Aug 18, 2019 8:23 pm

Ahh, ok, thanks for pointing that out, but...

... that does not work in conjunction with the crop tool (press the crop button and the extra toolbar appears, but the JPEG lossless transformations menu is grayed out). Currently, no fixed aspect ratio can thus be used for the lossless crop. Anyway, much cooler would be, if the crop toolbar contained a checkbox "Use jpeg losses crop transformation" and if selected, the less than pixel-exact lossless method would used and a re-encoding would be avoided. Maybe, while the checkbox is selected, the crop-rectangle could only be positioned in a place were the lossless method could crop the picture,

Could a moderator please move this to the Suggestions forum, or should I start a new thread there?

Thanks so much!

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