Where does Tumbler (of Thunar) store/cache its thumbnails?

Question

Tumbler is the thumbnailer for Thunar, from XFCE.

Where does it store its thumbnails? Where is the thumbnail cache?

I managed to see

#define THUMBNAILER_CACHE_PATH "/org/freedesktop/thumbnails/Cache1"

in the source code for Tumbler. Not sure if it's useful. I can't find the rest of the path, nor can I find this portion on my machine.

It's not ~/.thumbnails, and it's not ~/.cache/thumbnails.

Answer 1

Tumbler is an implementation of Thumbnail management DBus specification, which in turn relies on Thumbnail Managing Standard. It stores thumbnails in $XDG_CACHE_HOME/thumbnails/, usually ~/.cache/thumbnails. At that path two directories are used: normal and large, more details here.

Here on my system I have over one thousand thumbnails in either directories. Are you sure tumblerd is running?