Anyone who’s tried to share their ultrawide monitor during a video call knows the frustration. Your 34-inch screen becomes a tiny, unreadable strip for everyone else, or you share the entire desktop and waste half the space with empty areas. ZoneShare solves this specific but common problem with an elegant solution: it mirrors any part of your screen to a separate, resizable window that’s perfect for sharing.
I discovered ZoneShare while struggling with this exact issue on my setup - trying to share code demos during team meetings meant either cramming everything into a tiny portion of my ultrawide or subjecting my colleagues to squinting at microscopic text. ZoneShare lets me select the precise area I want to share, then mirrors it to a clean window that I can resize to standard aspect ratios like 16:9 or 4:3.
The setup is refreshingly simple. ZoneShare lives in your menu bar and activates with customizable hotkeys. When you need to share, hit your shortcut, select the screen area you want to mirror, and ZoneShare creates a separate window showing exactly that content in real-time. The mirrored window updates instantly as you work in the original area, and you can resize it to whatever dimensions work best for your video conferencing platform.
After testing ZoneShare during several weeks of daily video calls on my M2 MacBook Air, the performance is impressively smooth. The app maintains perfect synchronization between the source area and the mirrored window with no noticeable lag. System resource usage stays minimal - typically around 3-5% CPU during active mirroring, which is remarkable for real-time screen duplication.
What makes ZoneShare particularly useful is its focus overlay feature. When selecting your mirror area, it darkens everything outside your selection, making it clear exactly what your audience will see. The app also includes privacy controls that can blur sensitive content in the background, though I mainly use it for the precise area selection rather than privacy features.
The developer, Lunara Apps, has clearly built this for professionals who regularly present or share screens. ZoneShare works seamlessly with Zoom, Microsoft Teams, Google Meet, Webex, and any other video conferencing app - just share the ZoneShare window instead of your entire screen. The app requires macOS 13 Ventura or newer and runs natively on both Intel and Apple Silicon Macs.
ZoneShare is available for $9.99 as a one-time purchase from the App Store, which feels reasonable for solving such a specific but persistent problem. The app has earned a 4.8/5 star rating from users who clearly share my frustration with ultrawide screen sharing.
For developers doing code reviews, designers presenting mockups, or anyone who regularly shares content from ultrawide monitors, ZoneShare eliminates the awkward compromises that make remote collaboration unnecessarily difficult. It’s one of those utilities that solves a problem so well, you wonder how you managed without it.
