org-b64

With Org B64 you can easily Base64-encode files into an org file. This
makes possible the easy embedding as plain text of binaries such as images,
audio, and compressed files for later extraction or sharing with friends.

For all the details, please do see the README

Open it easily with:
  (find-file-read-only "README.org")   <--- C-x C-e here¹

or from any buffer:
  M-x org-b64-see-readme

or read it online:
  <https://flandrew.srht.site/listful/sw-emacs-org-b64.html>

¹ or the key that ‘eval-last-sexp’ is bound to, if not C-x C-e.