Remove folder icons

I have the following issue:
I organized my project folders to have my Blender drawings (multiple versions usually) and just one image, so that this image becomes the overlay (or “icon”) of the folder.

This works great, but only since I disabled previews for Blender files.

Before I disabled this setting, Dolphin created previews for Blender files, and as a result also created 4 folder icons… even after disabled Blender file previews, the folder icons are still appearing.

I don’t really want to create another subfolder for Blender files in order to have just one image icon per folder…

I understand that I can create a custom icon for each folder, but that would be a lot of work for some 100 folders…
I would rather to just disable the blender icons to show up with the folder icons.

There must be a cache somewhere that keeps bringing these back?

Thanks for any help in advance :wink:

Yes that’s in ~/.cache/thumbnails/

Once you disabled Blender file previews, it shouldn’t should any preview for them, that’s a bug. The cache was used regardless of the mime-type being allowed to have a preview.

Thanks for that.
There are over 12000 thumbnails, with (I assume) MD5 generated filenames. It’s a bit hard to find the Blender ones I am interested in removing :frowning:
Removing all thumbnails will mean Dolphin has to re-generated them all over again, right?

Also, I assume this cache directory is also used by other applications?

Yes, as encounter files that need a thumbnail.
This shouldn’t have much of an impact.

Some apps will, it follows Thumbnail Managing Standard, like plasma, or gnome-files but not Gwenview or digikam.

OK, I suppose I could go that route and just delete them all.

However, I have noticed yesterday that Dolphin still creates new folder icon overlays for Blender files, even though I have previews for Blender files disabled now. I have the feeling that the setting doesn’t affect the folders, only the icon view?

Then again, for some folders it didn’t create these icons… my only assumption here is, that the Blender files are larger than my limit (5 MB) for previews.

And then again… on my laptop, previews for Blender files is not even an option??

It’s all a bit confusing…

If that happens that’s a bug in kio-extras, it contains the folder-thumbnailer.

You can check this limit in the dolphin settings for preview.

Blender preview depends on runtime dependency, i.e things you need to install to have support for it.
It should be in package kdegraphics-thumbnailers.

Other formats support are provided by kimageformats, ffmpegthumbs or plugins like qt-jpegxl-image-plugin.

OK, I understand a bit more now. kdegraphics-thumbnailers does provide previews for Blender files. I remember now installing it, because it also provides previews for RAW files, which is great. Now I just wish I could choose to disable the Blender previews without disabling the RAW previews… but I guess that’s only possible if I dig into the source code :frowning:

You can.

Tha

Yes, you can, for icon previews. But this setting doesn’t seem to have any affect on the folder overlays. I have it disabled, and Dolphin still creates new Blender preview overlay images onto folders.

Indeed there is a bug for folders, code seems to handle it, but somehow it does not work.