Video Maximizer - Zoom to Fill

Quickly and securely zoom videos to fill your browser on most sites. Control the size when fullscreen is too big.

Maximize videos to fill your browser window - without taking over your entire screen. Video Maximizer is a free, open-source extension that lets you watch videos in “full-window” mode. It is the perfect alternative to fullscreen when you want to multitask, use other tabs, or when fullscreen mode is simply too big for your monitor. KEY FEATURES • Windowed Fullscreen: The extension identifies the video player, hides all other page elements (comments, sidebars, headers), and resizes the video to perfectly fill your browser window. • Great for Large Monitors: Perfect for Ultrawide or 4K screens where standard fullscreen mode is overwhelming. You decide how big the video is by resizing your browser window. • Privacy-First Design: You stay in control. The extension runs entirely locally on your device and sends no tracking data to any server. It also asks for explicit permission before accessing any new site for the first time. • Playback Control: Adds speed controls to many major streaming sites (Prime Video, HBO, Apple TV+, etc.). TRUSTED & TRANSPARENT ✔ Reliable: Actively maintained and working great since 2013. ✔ Free & Open Source: Developed as a hobby project with no ads, tracking, or paywalls. ✔ Secure: Fully commented code available for audit on GitHub. SUPPORT & FEEDBACK This extension is a personal project. If you find a bug or a site that isn't working, please report it on GitHub rather than leaving a bad review—I am happy to fix it! Source Code: https://github.com/trophygeek/universalvideomaximizer Report Issues: https://github.com/trophygeek/universalvideomaximizer/issues