1.10.5: Batch conversion result to JPEG/JIFF doesn´t display correctly in QuickLook

[David4]

XnView: MP 1.10.5 - 64 bit
OS: Windows 10 - 64bit (latest update to 29th March 2026
QuickLook: version 4.4.0 (latest from github) - free from https://github.com/QL-Win/QuickLook


I used to convert different picture files formats into JPG(JPEG/JIFF).
I have QuickLook installed on my PC for quick view images and results by a simple space bar press.
For a while evething worked just fine, until one XnViewMP update resulted in strange conversion JPG files (unfortunately I do not remember when it started exactly). I expected some future update will solve the issue, but it did not.

I already tried everything:
- all SETUP combinations inside the batch conversion menu and JPG SETUPs
- clean re-install with delelting all my user setups (and .ini files)


Effect: After file format conversions the final JPG image doesn´t display at all in QuickLook

To reproduce:
1. I include 2 images downloaded from offical web sites, where it doesnt work and also where it does
2. Righ-click on the images and initiate "Batch Convert" or CTRL+U
3. Set output file format to JPG (JPEG/JIFF) - doesnt matter what compression or quality
4. After conversion check in QuickLook by pressing space bar after selecting the conversion result = JPG image

Actual behaviour (bug): Ca. 60% of the cases the conversion result doesn´t display at all in QuickLook (see before and after images).
It doesn´t matter from what image format I convert from (webp, jpg, png, ...) in 60% of the time it will not show up at all in QuickLook. If I open the converted JPG image in a differend program (Photoshop, Paintshop PRO, etc) and re-save it from there, suddenly everything is correct and the JPG image shows up correctly in QuickLook.

Expected behaviour: After image conversion I expect all JPG files (converted to file images) to display correctly in QuickLook.

Thank you

[user0]

file
share original WEBP file

your JPEG has partially broken/incomplete EXIF, you can see 'Malformed APP1 EXIF segment' warning in Properties>ExifTool tab
if you delete EXIF file opens w/o issues in QuickLook

same EXIF, but in smaller file:

test_img_damaged_exif.jpg

QuickLook
regarding QuickLook - app should not fail to render an image just because some of the metadata is invalid.
You might want to report this issue to the developers so they can make the rendering more resilient.

[David4]

Thank you for the reply.

You are right about the EXIF. Unfortunatelly unchecking the "Keep EXIF" in the JPG format setup not help at all.
Deleting the EXIF is a solution, but not a nice one, especially when you are dealing with big amount of pictures.
If I convert those images in any other program, like Photoshop, Paintshop, ... the conversion to JPG is flawless even if the original image had issues with the exif.

Please find the sample webp image in the .rar file attached. It already contain some issues in EXIF, but at this point QuickLook still able to display it correctly. But after the conversion in XnView it will get worse.

I will also report it to QuickLook, good idea. So it can be solved on both sides. Thank you!

[user0]

there are 2 options in Batch convert
- add 'Clean metadata' action and check EXIF OR
- uncheck 'Preserve Metadata' in Output tab

[David4]

Thank you, that works!
Though rebuilding them correctly into the converted file, like others do would be a clean one