image-dired to view thumbnails of all images in a directory.
image-dired is a alias to
image-dired-show-all-from-dir. And it was also named
tumme before emacs 24.x.
The generated thumbnails are stored at
Note: this may not work in Windows or Mac.
It's better to use a real image viewer or view them in desktop. See: Emacs Lisp: Open File in External App. It lets you press one key to open the image in a viewer or desktop.
thanks to xfq (https://github.com/xfq/)