Fill Window for Video
Expand videos to fill window
Only for Mac
Free · In‑App Purchases
Mac
A whole new look. Fill your Safari window with any video, now with sleek glass controls, Up next and comments on YouTube, plus a solid mode if you prefer.
Most “fullscreen” browser extensions just maximize your entire window. Fill Window actually makes the video itself fill the space — instantly.
A BEAUTIFUL, MODERN DESIGN
Everything in Fill Window has a sleek glass look: floating controls, rounded panels and buttons that respond as you hover and click, all letting your video show through. Prefer something more solid? Turn off the glass effect in settings for darker, opaque controls instead.
WHAT IT DOES
Click the toolbar icon, use the keyboard shortcut, or hover a video for a quick expand button — Fill Window expands it to fill your current Safari window. No need to leave windowed mode, no native fullscreen animation, no juggling other apps you want to keep visible alongside it.
Once it’s filling the window:
Single-click the video to play or pause
Double-click, press Escape, use the Close button, or press Back in Safari to exit
Skip back or forward with the arrow keys or the on-screen buttons
Scroll to zoom in, then click-drag to reposition — a Reset button snaps back to fit
Hover the seek bar for a preview of what’s at that timestamp, including a real thumbnail on sites that support it
A loading indicator appears during genuine buffering, so you’re never left wondering if something’s stuck
MORE ON YOUTUBE, WITHOUT LEAVING FILL MODE
Up next: open a panel of suggested videos and switch to one on the spot
Play next: line videos up in a queue and they play in order when the current one ends
Autoplay: turn YouTube’s autoplay on or off from the same panel
Comments: scroll down on the video and the comments slide up from the bottom
Jump ahead: if you have YouTube Premium, the Jump ahead button appears in fill mode too
Quality: switch playback quality from the controls bar
MULTIPLE VIDEOS ON ONE PAGE
Click the toolbar icon and you’ll see every video on the page listed with a thumbnail — pick the one you want. If there’s only one, Fill Window fills it straight away.
ONE CLICK, RIGHT WHERE YOU’RE LOOKING
Hover any video and a small expand button appears right on top of it — no need to reach for the toolbar at all. Choose which corner it shows up in and how big it is, with a live preview in settings, or turn it off entirely if you’d rather stick to the toolbar or keyboard shortcut.
MADE YOUR WAY
A full settings page, in light or dark mode to match your Mac, lets you switch the glass effect on or off, and choose how long the controls stay visible before fading out, how far each skip jumps, and whether the playback buttons show on the video. It also includes a built-in guide to the gestures and shortcuts.
BUILT FOR REAL WEBPAGES
Modern video players often sit inside containers with CSS effects that break naive “make it fullscreen” tricks. Fill Window handles this properly, so it works reliably across a wide range of sites and custom video players, not just the simplest cases.
PRIVACY, DONE PROPERLY
Fill Window collects nothing. No analytics, no tracking, no accounts, no data sent anywhere. It only ever works with the page you’re already viewing: to find and control the video and, on YouTube, to show that page’s own suggestions and comments. Nothing is logged or transmitted. Your Play next queue stays in the tab and is gone when you close it. Full details in the privacy policy linked on this page.
FREE, WITH AN OPTIONAL TIP
No ads, no subscriptions, no feature locked behind payment. Everything works fully for free. If you’d like to support future development, there’s an entirely optional tip built in through Apple’s own In-App Purchase — never required, never intrusive.
Fill Window is built and maintained by an independent developer.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
whole new look!
Fill Window has been completely redesigned with a sleek, modern glass style.
New glass design: floating controls, rounded panels and buttons that let your video show through
Buttons respond as you hover and click, with a soft glow that follows your pointer
Glass effect switch in settings: prefer something solid? Turn it off for darker, opaque controls
A slimmer, cleaner seek bar and refreshed controls bar
Redesigned Up next and Comments panels on YouTube
All-new settings page, menu and app window, in light or dark mode to match your Mac
Settings now preview your choices live, including the glass effect and overlay button
Fixes
Fixed zoom resetting itself a few seconds after zooming in
Thanks for using Fill Window. If you’re enjoying it, a rating or review really helps an independent developer.
The developer, LIAM PATRICK TAYLOR, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- LIAM PATRICK TAYLOR
- Size
- 237.8 KB
- Category
- Utilities
- Compatibility
Requires macOS 15.6 or later.
- Mac
Requires macOS 15.6 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Large Tip $4.99
- Medium Tip $2.99
- Small Tip $0.99
- Copyright
- © 2026 Liam Taylor
