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Twitch: toggle theatre mode

Switches the player's theatre mode on or off with one click to enlarge the stream view.

Code to copy

// Toggle the player's theatre mode with one click
const btn = document.querySelector('button[data-a-target="player-theatre-mode-button"]');
if (btn) {
  btn.click();
} else {
  const fs = document.querySelector('button[aria-label*="Theatre"]');
  if (fs) { fs.click(); }
}

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Enable the action panel, add a button in the Actions tab and paste the code into it — run it with one click.