XnView Software

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Turn on search in subfolders if your files are in subfolders.

If you've been tagging files in other software, go to Settings:Metadata and ensure the options are set correctly. Turn on the import options there, and the categories options.

You may then have to select the ...

... incorrect thumbnail for image with different x/y DPI (1.4.4)

suggestions
Metadata - EXIF thumbnail - add extract/replace actions
Settings - thumbnails - overlay icon - add custom positioning
Browser - thumbnails - overlay icon - split top row icons
Browser - thumbnails - change ...

... Catalog Filter.

Refer to the thread Michel posted…

Category tags can be in either IPTC or XMP format, and they can be saved in the image file, in a sidecar file (non-destructive Adobe style), both, or neither (just retained only in the XnViewMP database). It just depends on the settings you choose.

... answer
Here you have an example of photo rated 5 start but missing:
https://www.dropbox.com/scl/fi/htenwwv0q6cc0qawn19iu/IMG_20230801_155422.zip?rlkey=26yhnwcbdzg26wmy2j4qmt698&st=txgs9wng&dl=0
(photos too big to be attached)

My metadata settings: MetadataSetting.jpg

Thank you in advance
Vincenzo

In XnView MP Tools > Settings... > View > Filter -- Custom do you have AI/PDF/AI selected?

That would seem to be a prerequisite for viewing those formats, but possibly not sufficient... :wink:

See also Tools > Settings... >File list > Custom filter , to complicate matters, not sure how those two ...

... you browse to a folder in XnViewMP, it stores information about those files in the catalog (assuming you have the Catalog enabled; check your settings). In essence, browsing to a folder "auto-adds" it to the catalog, without a separate import step. Once the information is stored, it is available ...

jotess wrote: Thu Nov 13, 2025 3:47 pm checkbox "add this template to the list" that can be selected every time I use the dialogue

this is weird approach
better to add Presets functionality that will save all tool's settings, eg like in Batch convert

... size" or "modifiedts-size" or "driveid-uniquefilenumber", as well as the existing "fullpath" method, one of which the user could choose in settings, as these would make thumbnails once generated immune to moves, and use of a drive ID would tackle drive letter changes. In this regards I would ...

... the thumbnail key so that the thumbnails are immune to moves. Obviously to use modified-size it would be up to the user to avoid a combination of settings whereby saves were performed without updating the timestamp that also didn't alter the size (such as changing a PNG from entirely red to entirely ...

The startup of XnView has generally been very slow for me when launched from my exFAT R: drive. I tried the different startup settings with no luck.
What I have found is that making a subfolder hidden that is full of files unrelated to xnview usage, dramatically changed the startup speed from very ...

You're talking about browsing in XnViewMP, right?

I did some tests at one point, when I was configuring the app, and I seem to recall that using webp for thumbnails was a little bit faster than using jpeg.

Have you actually timed both settings on the same folder?

EDIT: Replicated with a blank Portable version, only modified settings a bit to make sure sidecar files are being generated. HOWEVER was able to replicate with DEFAULT settings after this as well!
Video and XNView.ini i used for this test:
https://www.dropbox.com/scl/fo/zdf1o23u2l093ezyc6wff ...

... file, having joined the two files you could then try saving the combined file to a PDF, or alternatively you could try loading the files into Batch convert or XnConvert and then output to a PDF file, you might possibly need to experiment with the Output tab settings.

Single or multi-page JP2 files?

change View from 'Embedded preview' to 'Full size'
in Settings > Read > Camera RAW

... that way.
However they certainly need to be cleaned up afterward.
In addition, I think there should be a custom temp path people can enter under Settings - Paths
For myself I generally redirect temp files of programs I use to ramdisk.

The whole temp files in windows generally is very badly designed ...