Guides for presenting on a projector

Guides for presenting on a projector | Stagemarkhttps://stagemark.hhcompany.app/guides/feed.xml2026-11-09T00:00:00ZStagemarkhttps://stagemark.hhcompany.app/assets/icon-128.png How to stop HDMI showing your whole laptop screenhttps://stagemark.hhcompany.app/guides/stop-laptop-screen-showing-on-hdmi/2026-10-26T00:00:00Z2026-11-09T00:00:00Z

When you plug in HDMI, the computer turns the projector on in its last mode for that screen, often mirroring, so your whole screen shows up before you can react. Switch the screen to extended mode and turn off notifications while mirroring, or use Stagemark, which covers a newly connected screen in black at once and asks what to show.

Stagemark user guide: menus, shortcuts and settingshttps://stagemark.hhcompany.app/guides/user-guide/2026-11-09T00:00:00Z2026-11-09T00:00:00Z

Stagemark is a menu bar app that covers an external monitor in black and shows only the window you pick. Pick a window, plug in the projector and choose Start output. This page goes through every menu item, shortcut and setting of the Mac version.

How to show only one window on a projector from a Machttps://stagemark.hhcompany.app/guides/show-one-window-on-projector-mac/2026-10-26T00:00:00Z2026-10-26T00:00:00Z

macOS gives you two ways to use a projector. Mirroring copies your whole screen, and an extended display shows every window you put on it, so neither keeps it to one window. Stagemark covers the projector in black the moment you plug in and shows only the window you pick. Press ⌃⌥⌘A on the window you want to show.

How to show only one window on a second screen in Windowshttps://stagemark.hhcompany.app/guides/show-one-window-second-screen-windows/2026-10-26T00:00:00Z2026-10-26T00:00:00Z

Windows has four projection modes under Win+P, and none of them shows a single window. Duplicate shows your whole screen; Extend shows everything you drag over. Stagemark covers the second screen in black and shows only the window you pick, live. Press Ctrl+Alt+Win+A on the window you want to show.

How to freeze the projector screen while you keep workinghttps://stagemark.hhcompany.app/guides/freeze-projector-screen/2026-10-26T00:00:00Z2026-10-26T00:00:00Z

Many projectors have a Freeze button on the remote, and Keynote and PowerPoint can black out the screen with the B key during a slideshow. To freeze from the computer in any app, use Stagemark: ⌃⌥⌘F on Mac or Ctrl+Alt+Win+F on Windows holds the current picture until you press it again.

How to put windows back when you plug in a monitorhttps://stagemark.hhcompany.app/guides/remember-window-positions-per-monitor/2026-10-26T00:00:00Z2026-10-26T00:00:00Z

Windows 11 has a setting that remembers window locations per monitor connection; macOS has no such setting. Stagemark remembers a position for each window per monitor setup, the laptop alone and the laptop with your desk monitor, and puts windows back with ⌃⌥⌘L (Windows: Ctrl+Alt+Win+R) or automatically when monitors change.