Fullscreen "Cinema mode" on YouTube and other quality-of-life improvements

Name: Fullscreen "Cinema mode" on YouTube and other quality-of-life improvements
Author: ISh-

Browser extension that makes YouTube "Cinema mode" truly in fullscreen and some shortcut focus fixes.

As of June 2026, Fullscreen "Cinema mode" on YouTube and other quality-of-life improvements has 7 users in the Entertainment category.

ISh-Entertainment

Chrome Web Store ↗.crx

Users+16.7%

Rating0%

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— reviews

Reviews0%

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Version

0.1

Manifest V3

History

5 snapshots

Tracking since Apr 7, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 7, 2026	6	—	—	0.1
May 3, 2026	5	—	—	0.1
May 14, 2026	6	—	—	0.1
May 27, 2026	7	—	—	0.1
Jun 3, 2026	9	—	—	0.1
Now	7	—	—	0.1

Permissions & access

Permissions: scriptingstorage
Host access: https://*.youtube.com/*

Screenshots

Fullscreen "Cinema mode" on YouTube and other quality-of-life improvements screenshot 1

Fullscreen "Cinema mode" on YouTube and other quality-of-life improvements screenshot 2

About

A browser extension that makes YouTube's "Cinema mode" (Theater mode) truly occupy the full height of your browser window and fixes common focus issues with shortcut keys.

## 🚀 Features

- **True Full-Height Theater Mode:** The player expands to `100vh`, giving you a "maximized" feel without entering OS-level fullscreen.
- **Immersive UI:** The top header (masthead) automatically hides when in Theater mode and fades back in on hover.
- **Smart Focus Management:**
    - Redirects arrow keys to the player if the mouse is hovering over it.
    - Automatically refocuses the player when interacting with progress or volume sliders.
- **Enhanced Captions:** Improved subtitle readability with custom shadows and backgrounds.
- **Custom Accents:** Features a sleek cyan playback progress bar.

## ⚙️ Configuration

You can customize some styling variables in `extension/style_injection.css` or via the options page. By default, it uses a vibrant cyan color (`rgb(0, 239, 255)`) for the progress bar.