YouTube - Always Theater Mode

Set the default viewing mode to Theater Mode.

These are versions of this script where the code was updated. Show all versions.

  • v1.4.3 2022-04-09

    Bump timeout from 200ms to 500ms to ensure video is fully loaded before triggering theater mode.
  • v1.4.2 2021-09-17
  • v1.4.2 2021-09-17

    Add a small timeout before attempting to hit the Theater Mode button. Fixes issues with current YouTube.
  • v1.4.1 2018-07-28 Support new YouTube changes as of July 2018.
  • v1.4.0 2017-09-11
  • v1.4.0 2017-09-11 Use YouTube's SPF API to detect when a video is loaded. Even meaner and leaner than before!
  • v1.3.5 2017-08-31 For 2017 redesign, do not toggle theater mode off if it is already on.
  • v1.3.4 2017-08-31 Support new YouTube design for 2017.
  • v1.3.3 2016-07-23 Even leaner and meaner than before!
  • v1.3.2 2016-01-15 Update script to coincide with latest YouTube changes.
  • v1.3.2 2016-01-15 Update script to coincide with latest YouTube changes.
  • v1.3.1 2015-08-04 Leaner and meaner!
  • v1.3.0 2015-07-07 Disable SPF (Thanks Anon from YouTube Cinema Mode userscript). Split code into functions. Load DOM mods on document end.
  • v1.2.1 2015-06-27 Add support to expand HTML5 progress bar for new HTML5 player.
  • v1.2 2015-06-27 Fix HTML5 progress bar to expand to full-width.
  • v1.1 2015-06-23 Better support for HTML5 videos when using Tampermonkey.
  • v1 2015-06-19