diff --git a/etc/images/outline-close.svg b/etc/images/outline-close.svg
new file mode 100644
index 0000000000..ea9157a5fb
--- /dev/null
+++ b/etc/images/outline-close.svg
@@ -0,0 +1,6 @@
+
diff --git a/etc/images/outline-open.svg b/etc/images/outline-open.svg
new file mode 100644
index 0000000000..75cf6aff9f
--- /dev/null
+++ b/etc/images/outline-open.svg
@@ -0,0 +1,4 @@
+
diff --git a/lisp/emacs-lisp/icons.el b/lisp/emacs-lisp/icons.el
index 93749a3451..ff4f20c207 100644
--- a/lisp/emacs-lisp/icons.el
+++ b/lisp/emacs-lisp/icons.el
@@ -202,7 +202,7 @@ icons--create
:height (if (eq height 'line)
(window-default-line-height)
height)
- :scale 1)
+ :scale 1 :ascent 'center)
(create-image file))))))
(cl-defmethod icons--create ((_type (eql 'emoji)) icon _keywords)
diff --git a/lisp/outline.el b/lisp/outline.el
index b19e0cf811..364c3bee84 100644
--- a/lisp/outline.el
+++ b/lisp/outline.el
@@ -292,16 +295,18 @@ outline-minor-mode-use-buttons
:safe #'booleanp
:version "29.1")
-(define-icon outline-open button
- '((emoji "🔽")
+(define-icon outline-open nil
+ '((image "outline-open.svg" :height 15 :ascent center)
+ (emoji "🔽")
(symbol " ▼ ")
(text " open "))
"Icon used for buttons for opening a section in outline buffers."
:version "29.1"
:help-echo "Open this section")
-(define-icon outline-close button
- '((emoji "▶️")
+(define-icon outline-close nil
+ '((image "outline-close.svg" :height 15 :ascent center)
+ (emoji "▶️")
(symbol " ▶ ")
(text " close "))
"Icon used for buttons for closing a section in outline buffers."