Presentation Mode for Reddit by ubershmekel

Presentation Mode for Reddit turns the Reddit page you already have open into a
full-screen slideshow.

Click the toolbar button or press Alt+P on a Reddit feed, subreddit, search
result, or post page. The extension reads the posts that are already on screen
and presents them one at a time, with the title, community, and a link back to
the comments.

Navigate with the arrow keys, Page Up and Page Down, or by swiping. Choose Auto
to advance automatically, press M to unmute video, F for browser fullscreen, and
Escape to return to Reddit. A settings panel lets you choose the slide duration
and hide the title, arrows, or close button, or compact the bottom controls;
these preferences persist in Chrome. Escape closes presentation mode from the
slideshow even when its close button is hidden.

You can also start the slideshow straight from a link: add redditp=1 to any
Reddit address and the page opens in presentation mode by itself.

The extension runs only on reddit.com, uses your existing Reddit session, and
sends nothing anywhere else. It presents the posts your own Reddit account and
settings already show you on the page.