FullscreenPlus - In-window mode & volume booster

Customize fullscreen to fill your browser window instead of your screen. Works on YouTube, Reddit, and more, with volume boosting.

FullscreenPlus gives you control over video fullscreen behavior and playback volume. Works across a variety of websites, from everyday video platforms to popular streaming services and more. FEATURES • Native Fullscreen: Use the browser's default fullscreen behavior. • In-Window Fullscreen: Make videos fill your browser window instead of your entire screen. • Ask Mode: Choose your preferred fullscreen behavior each time. • Volume Booster: Boost tab audio up to 400%. • Per-Site Preferences: Remembers your preferred fullscreen mode for each website. Volume defaults to 100% when navigating to a new page or refreshing, preventing unexpectedly loud playback. PERMISSIONS & PRIVACY FullscreenPlus requires permission to access and modify website content to customize fullscreen behavior and provide volume boosting. You have full control over which websites FullscreenPlus can access. To manage permissions, right-click the FullscreenPlus icon, select "This can read and change site data", and choose whether to allow access on the current website or all websites. You can also restrict access to specific websites through Chrome's extension settings under "Site access". Firefox version: https://addons.mozilla.org/en-US/firefox/addon/fullscreenplus/ Source code: https://github.com/devKomori/FullscreenPlus