These commands add various frivolous display gimmicks to the article buffer in Emacs versions that support them.

X-Face headers are small black-and-white images supplied by the message headers (see X-Face).

Face headers are small colored images supplied by the message headers (see Face).

Smileys are those little ‘:-)’ symbols that people like to litter their messages with (see Smileys).

Picons, on the other hand, reside on your own system, and Gnus will try to match the headers to what you have (see Picons).

Gravatars reside on-line and are fetched from https://en.gravatar.com/ (see Gravatars).

All these functions are toggles—if the elements already exist, they’ll be removed.

W D x ¶: Display an X-Face in the From header. (gnus-article-display-x-face).
W D d ¶: Display a Face in the From header. (gnus-article-display-face).
W D s ¶: Display smileys (gnus-treat-smiley).
W D f ¶: Piconify the From header (gnus-treat-from-picon).
W D m ¶: Piconify all mail headers (i.e., Cc, To) (gnus-treat-mail-picon).
W D n ¶: Piconify all news headers (i.e., Newsgroups and Followup-To) (gnus-treat-newsgroups-picon).
W D g ¶: Gravatarify the From header (gnus-treat-from-gravatar).
W D h ¶: Gravatarify all mail headers (i.e., Cc, To) (gnus-treat-from-gravatar).
W D D ¶: Remove all images from the article buffer (gnus-article-remove-images).
W D W ¶: If you’re reading an HTML article rendered with gnus-article-html, then you can insert any blocked images in the buffer with this command. (gnus-html-show-images).