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JPEG grayscale (v1.1) thumbnail is blank
Posted: Tue Feb 05, 2013 1:23 am
by Zman
XnView 1.99.6, Windows 7 64 bit
Viewer shows black rectangle as a thumbnail for this image:
download from
http://imgur.com/fXJBbNp
Re: JPEG grayscale (v1.1) thumbnail is blank
Posted: Tue Feb 05, 2013 9:55 am
by xnview
i don't have black rectangle, could you post a screenshot?
Re: JPEG grayscale (v1.1) thumbnail is blank
Posted: Tue Feb 05, 2013 9:28 pm
by Drahken
zman- What size thumbnails are you using? Some thumbnail related bugs appear with certain sizes but not with others.
Re: JPEG grayscale (v1.1) thumbnail is blank
Posted: Thu Feb 21, 2013 11:39 pm
by Zman
Sorry for delay!
thumbnail size is set to 92x69 and I tried a few others randomly - no change.
"Rebuild thumbnails" - no change
http://i.imgur.com/2cn6Hl0.png
Re: JPEG grayscale (v1.1) thumbnail is blank
Posted: Thu Feb 21, 2013 11:51 pm
by Zman
Re: JPEG grayscale (v1.1) thumbnail is blank
Posted: Fri Feb 22, 2013 7:49 am
by xnview
Last version of XnView?
Which OS?
Re: JPEG grayscale (v1.1) thumbnail is blank
Posted: Sun Feb 24, 2013 11:31 pm
by Zman
Dear Pierre, it is in first post of this thread
by Zman ยป Tue Feb 05, 2013 11:23 am
XnView 1.99.6, Windows 7 64 bit
Re: JPEG grayscale (v1.1) thumbnail is blank
Posted: Mon Mar 04, 2013 2:00 pm
by xnview
I have 7 64bits too, and no problem
Re: JPEG grayscale (v1.1) thumbnail is blank
Posted: Thu Mar 07, 2013 3:18 am
by Drahken
Hey zman, download that pic that you posted & see if it has the same issue as your original. I don't think it will.
In your screenshots, your affected images have the icons for exif data & embedded thumbnail, yet the version downloaded from imgur lacks both of those. Clearly imgur made some kind of changes to your pic, which means it's useless as a sample. (However, it does point toward where the problem might be.)
If the downloaded image doesn't have the problem, then try this: Open the original pic, click edit->metadata->remove exif thumbnail, then save it as a new image & see if the new image still has the issue. If not, then you know the problem lies in the embedded thumbnail.
btw, What program did you use to create the image in the first place?
