diff --git a/sh/ghmd b/sh/ghmd
new file mode 100644
index 0000000..c2e0d76
--- /dev/null
+++ b/sh/ghmd
@@ -0,0 +1,24 @@
+#!/usr/bin/env zsh
+# ghmd - format GitHub markdown
+# via: https://leahneukirchen.org/dotfiles/.zshrc
+# example: ghmd < README.md > README.html
+# YES_ZSH
+# YES_BASH
+# YES_DASH
+
+ghmd() {
+    # CSS via: https://github.com/sindresorhus/github-markdown-css
+    # <link href="//cdnjs.cloudflare.com/ajax/libs/octicons/2.1.2/octicons.css" 'media="all" rel="stylesheet" type="text/css" />
+    printf '%s' '<!DOCTYPE html><html><head><meta charset="utf-8"><link ' \
+      'href="https://eaguru.guru/t/github-markdown.css" ' \
+      'media="all" rel="stylesheet" type="text/css"/></head><body ' \
+      'style="box-sizing: border-box; min-width: 200px; max-width: 980px; ' \
+      'margin: 0 auto; padding: 45px;"><article class="markdown-body">'
+    curl -s --data-binary @- -H 'Content-Type: text/plain' \
+      https://api.github.com/markdown/raw
+    local ret=$?
+    printf '%s' '</article></body></html>'
+    return $ret
+}
+
+[ "${SOURCING:-0}" -gt 0 ] || ghmd "$@"
