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A presentation tool for org-mode based on the visibility of outline trees
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README for Org Tree Slide

1. What’s this?

The main purpose of this elisp is to handle each tree in an org buffer as a slide by simple narrowing. This emacs lisp is a minor mode for Emacs Org-mode.

Main features:

  • Live editable presentation
  • Fast switching of narrowing/widen
  • TODO pursuit with narrowing
  • Displaying the current number of slides in mode line
  • CONTENT view during a presentation
  • Slide-in effect
  • Slide header from org file’s header
  • Countdown timer

1-1. Related packages

There are various packages to make a presentation with org-mode. See For more simple use, presentation.el may suitable.

2. Install

  1. Put this elisp into your load-path
  2. Add (require 'org-tree-slide) in your .emacs


  1. Eval: (auto-install-from-url "") (for auto-install users)
  2. Add (require 'org-tree-slide) in your .emacs

Then open an org file, just type C-< and C->, which means C-M-,= and =C-M-., you can see a presentation will begin with a header, slide-in effect, and slide number in mode line.

It is recommended to change the keybindings to make your presentation smoothly. Here is an example.

(with-eval-after-load "org-tree-slide"
  (define-key org-tree-slide-mode-map (kbd "<f9>") 'org-tree-slide-move-previous-tree)
  (define-key org-tree-slide-mode-map (kbd "<f10>") 'org-tree-slide-move-next-tree)

2.1 el-get recipe

If you are an el-get user, just do

M-x el-get-install RET org-tree-slide


Now, you can install `org-tree-slide’ via MELPA.

2.2 Requirements

  • Org-mode 6.33x or higher version is required.
  • This elisp doesn’t require any additional packages.

2.3 additional package (moom.el)

Normally, presentations will appear in full screen or frame maximized. moom is useful in such cases since the package can change frame position and size by keyboard and the font size will be increased suitably for your presentation.

3. Recommended settings

Assigning a single key to org-tree-slide-mode is recommended.

(global-set-key (kbd "<f8>") 'org-tree-slide-mode)
(global-set-key (kbd "S-<f8>") 'org-tree-slide-skip-done-toggle)


(define-key org-mode-map (kbd "<f8>") 'org-tree-slide-mode)
(define-key org-mode-map (kbd "S-<f8>") 'org-tree-slide-skip-done-toggle)

4. Profiles

Three useful profiles are available. Please select a profile that is the most suitable for your using scenario.

If you select simple profile, call the following command while org-tree-slide-mode is ON.

M-x org-tree-slide-simple-profile

If you want to use this setting as the default, put the following configuration including recommended settings into your .emacs.

(when (require 'org-tree-slide nil t)
  (global-set-key (kbd "<f8>") 'org-tree-slide-mode)
  (global-set-key (kbd "S-<f8>") 'org-tree-slide-skip-done-toggle)

org-tree-slide-presentation-profile and org-tree-slide-narrowing-control-profile are also available.

4-1. `Simple’

This profile will display trees in your org buffer by simple narrowing. You can change trees without widen command. Most of the visual effect is disabled.

Type M-x org-tree-slide-simple-profile while org-tree-slide-mode is ON.

  1. No header display
  2. No slide-in effect
  3. The cursor will move to the head of the buffer when exit
  4. No slide number display in mode line
  5. Display every type of tree except org-comment-string (e.g. COMMENT)

4-2. `Presentation’

This profile is the default setting of org-tree-slide. If an org buffer includes #+TITLE:, #+EMAIL:, and #+AUTHOR:, org-tree-slide attempts to use those variables in the slide header. A date in the header will be set with the presentation of the day. You can enjoy a slide-in effect, the current slide number in mode line.

If you want to show the content of your presentation, type C-x s c or M-x org-tree-slide-content. All of the headings will be shown in a buffer like a Table Of Content except some headings configured as skipping by org-tree-slide-slip-outline-level. Find a heading that you want to show, and type C->, the presentation will be resumed.

It is possible to skip slides when a heading level is higher than or equal to a value of org-tree-slide-skip-outline-level. see User variables.

To exit a presentation, set org-tree-slide-mode OFF. The cursor move to the head of the buffer and the trees will be rendered according to the value of #+STARTUP: if possible.

M-x org-tree-slide-presentation-profile

  1. Display header
  2. Enable slide-in effect
  3. The cursor will move to the head of buffer when exit
  4. Display slide number in mode line
  5. Display every type of tree except org-comment-string (e.g. COMMENT)

4-3. `TODO Pursuit with narrowing’

This profile will display trees restricted to TODO status without a header and slide-in effect. It is very useful to concentrate your focus on the current TODO item that is not done, and go to the next task by typing of C->. This is “TODO Pursuit with narrowing”. If you want to track every kind of tree including finished items, toggle M-x org-tree-slide-skip-done-toggle OFF.

When you exit org-tree-slide-mode, the cursor will keep the same position, it is therefore possible to focus again by toggle M-x org-tree-slide-mode.

If you feel the cursor moving is very slow, please change a value of org-tree-slide-modeline-display to =’outside= or nil.

M-x org-tree-slide-narrowing-control-profile

  1. No header display
  2. No slide-in effect
  3. The cursor will keep the same position when exit
  4. Display slide number in mode line
  5. Display TODO trees only except org-comment-string (e.g. COMMENT)

5. User variables

VariableDefault valueSelect
12org-tree-slide-deactivate-messageQuit, Bye!String
15org-tree-slide-breadcrumbs” > ”String

[*1] { nil| ‘lighter | ‘outside } ‘outside: shown in the mode line outside of lighter ‘lighter: shown in lighter (slow) nil: nothing to be shown”

5-1. Useful settings for experts

If you like this elisp, the following setting is more useful. Try it!

In this case, <f8> / <f9> / <f10> / <f11> are assigned in order to control org-tree-slide.

(when (require 'org-tree-slide nil t)
  (global-set-key (kbd "<f8>") 'org-tree-slide-mode)
  (global-set-key (kbd "S-<f8>") 'org-tree-slide-skip-done-toggle)
  (define-key org-tree-slide-mode-map (kbd "<f9>")
  (define-key org-tree-slide-mode-map (kbd "<f10>")
  (define-key org-tree-slide-mode-map (kbd "<f11>")
  (setq org-tree-slide-skip-outline-level 4)
  (setq org-tree-slide-skip-done nil)))

6. Functions

Control functions

  • org-tree-slide-move-next-tree (C->)
  • org-tree-slide-move-previous-tree (C-<)
  • org-tree-slide-content (C-x s c)

Startup options

These functions will toggle org-tree-slide-mode ON, automatically.

  • org-tree-slide-without-init-play
  • org-tree-slide-play-with-timer

Toggle variables

  • org-tree-slide-display-header-toggle
  • org-tree-slide-slide-in-effect-toggle
  • org-tree-slide-skip-done-toggle
  • org-tree-slide-skip-comments-toggle
  • org-tree-slide-heading-emphasis-toggle

Batch setting of user variables

  • org-tree-slide-simple-profile
  • org-tree-slide-presentation-profile
  • org-tree-slide-narrowing-control-profile


  • org-tree-slide-play-hook
  • org-tree-slide-stop-hook
  • org-tree-slide-before-narrow-hook
  • org-tree-slide-after-narrow-hook
  • org-tree-slide-before-move-next-hook
  • org-tree-slide-before-move-previous-hook

NOTE: For senior user, some hook were renamed, please update your configurations

7. History

see also ChangeLog

v2.8.62017-11-30@15:33Added a hook for CONTENT viewing mode
v2.8.52016-05-14@14:09Added breadcrumbs feature (by Matus)
v2.8.42015-08-12@21:35‘COMMENT’-subtree will be hidden (by Stefano)
v2.8.32015-08-09@01:04Added a flag to reveal subtrees to be skipped
v2.8.12015-02-27@10:42Hide org-clock related code
v2.8.02015-02-20@21:27Changed Keymap, and renamed/added hooks
v2.7.52015-02-15@16:29Replace ots- with org-tree-slide–
v2.7.42015-02-14@23:30Refine displaying slide number in modeline
v2.7.22015-01-12@19:56Suppress an error message from org-timer
v2.7.12015-01-12@18:28Hide skipped slides when CONTENT mode
v2.7.02013-07-21@05:21Support buffers without headings
v2.6.82013-02-19@12:49Added a flag to control face setting
v2.6.62013-02-19@11:22Added a new toggle to skip commented trees
v2.6.42013-02-12@01:43Added some features (issue #2, #5, and #7)
v2.6.22013-01-27@21:21Added hooks for start and stop the presentation
v2.6.02012-11-21@02:14Support dark color theme (by @uk-ar)
v2.5.42012-01-11@23:02Add autoload magic comments
v2.5.32011-12-18@00:50Fix a bug for an org buffer without header
v2.5.22011-12-17@17:52Set presentation profile as the default
v2.5.12011-12-17@13:34org-tree-slide-skip-done set nil as default
v2.5.02011-12-12@18:16Remove auto-play function (TBD)
v2.4.12011-12-09@11:46Add an option to control mode line display
v2.4.02011-12-08@10:51Support TODO pursuit in a slideshow
v2.3.22011-12-08@09:22Reduce redundant processing
v2.3.12011-12-07@20:30Add a new profile to control narrowing status
v2.3.02011-12-07@16:17Support displaying a slide number
v2.2.02011-12-07@02:15Support minor mode
v2.1.72011-12-06@00:26Support TITLE/AUTHOR/EMAIL in a header
v2.1.52011-12-05@17:08Fix an issue of title display
v2.1.32011-12-05@15:08Fix the end of slide for skip control
v2.1.12011-12-05@11:08Add skip control by heading level
v2.0.12011-12-02@18:29Change function names, ots- is introduced.
v2.0.02011-12-01@17:41Add profiles and support org 6.33x
v1.2.52011-10-31@18:34Add CONTENT view to see all the subtrees.
v1.2.32011-10-30@20:42Add a variable to control slide-in duration
v1.2.12011-10-30@16:10Add slide-in visual effect
v1.1.12011-10-28@16:16Add functions to start and stop slide view
v1.0.02011-09-28@20:59Release the initial version

8. Contact

The author is Takaaki ISHIKAWA ( Feel free to email me or use a mention of twitter (@takaxp)

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