can I use jpeg files as folder thumbnail?

[JustMe]

I occasionally create or download photos with jpeg extension. They don't show up as the folder thumbnail. Is there some setting to allow this?
I know that jpg and png work. But not jpeg. Thanks.

[klownboy]

I don't believe there's a setting you've missed. The order of precedence for showing folder thumbnails is as follows and it's hardcoded:

1) desktop.ini / [ViewState] Logo=
2) folder.jpg
3) folder.png
4) folder.gif
5) *.jpg/*.png (alphabetically first JPG, if none then first PNG)
6) desktop.ini / [.ShellClassInfo] IconFile=

With a tiny bit of work, you can rename those file extensions to jpg (it works) or you can specify that jpeg file for the Logo in a desktop.ini file. That also works. See these two threads for further information. viewtopic.php?f=3&t=17011&p=146280&hili ... pg#p146280 and viewtopic.php?f=5&t=13282&hilit=desktop.ini
Also take a look at the Thumbnail Viewer Gallery script here viewtopic.php?f=7&t=15319

Edit: Actually this is the script I wanted you to look at more so than the one immediately above. viewtopic.php?f=7&t=15509 This script will generate thumbnails for all your subfolders (not files) under the current folder in a "Zoom to Fill" mode. I have another version where you pick the image you want as the folder.jpg file as opposed to having the script select it randomly from the folder.

[admin]

I'll add support for jpeg to the next beta.

[JustMe]

Thanks @klownboy for your detailed reply and scripts. Don't know if I'll get into scripting yet.
Thanks @admin for adding jpeg!!