Variable: image-dired-thumbnail-storage

image-dired-thumbnail-storage is a customizable variable defined in image-dired.el.gz.

Value

use-image-dired-dir

Documentation

How to store image-dired's thumbnail files.

Image-Dired can store thumbnail files in one of two ways and this is controlled by this variable. "Use image-dired dir" means that the thumbnails are stored in a central directory. "Per directory" means that each thumbnail is stored in a subdirectory called
".image-dired" in the same directory where the image file is.
"Thumbnail Managing Standard" means that the thumbnails are
stored and generated according to the Thumbnail Managing Standard that allows sharing of thumbnails across different programs.

Probably introduced at or before Emacs version 26.1.

Source Code

;; Defined in /usr/src/emacs/lisp/image-dired.el.gz
(defcustom image-dired-thumbnail-storage 'use-image-dired-dir
  "How to store image-dired's thumbnail files.
Image-Dired can store thumbnail files in one of two ways and this is
controlled by this variable.  \"Use image-dired dir\" means that the
thumbnails are stored in a central directory.  \"Per directory\"
means that each thumbnail is stored in a subdirectory called
\".image-dired\" in the same directory where the image file is.
\"Thumbnail Managing Standard\" means that the thumbnails are
stored and generated according to the Thumbnail Managing Standard
that allows sharing of thumbnails across different programs."
  :type '(choice :tag "How to store thumbnail files"
                 (const :tag "Use image-dired-dir" use-image-dired-dir)
                 (const :tag "Thumbnail Managing Standard (normal 128x128)" standard)
                 (const :tag "Thumbnail Managing Standard (large 256x256)" standard-large)
                 (const :tag "Per-directory" per-directory)))