Share a portion of your ultrawide or high-res screen on Mac
Define a region of your screen to be shared from your ultrawide or high resolution monitor, preventing the inevitable "can you zoom in?" that comes with sharing the entire screen. Define any size region to share, move apps in and out of the region seamlessly, resize the region on the fly, set a default region and invoke with a keyboard shortcut for quick and easy sharing. Blur for privacy. Scaled presenter view displays the content your viewers are seeing. Integrated annotations and whiteboard.
I built RegionMirror out of the need to find a solution to share my 49" Ultrawide screen with colleagues using Teams, Slack, and other meeting platforms. Sharing the entire screen with someone not rocking a monster-sized screen on the receiving end of the screen share makes the content very small and unreadable. Prior to RegionMirror, sharing just a single window was how I worked around it, but that became annoying and disruptive to my flow when having to switch back and forth between applications.
With RegionMirror, you can define a portion of the screen to share and then use the "Share a window" function of the meeting tool. Then you simply move applications into the region as needed, or move the region to the applications. The shared region can be moved or resized as needed on the fly without ever stopping sharing.
You can also set up a default region that can be activated with a keyboard shortcut that you can define per monitor. This allows you to very quickly set up a screen region without having to navigate the RegionMirror menu and draw the region- just execute the shortcut and then share the region window. I find this is great for quick unplanned screen sharing sessions.
Some other notable features include:
Scaled-down and resizable presenter view displays exactly what users are seeing
Pointer and text annotations to highlight shared content
Blur the screen when entering passwords or other sensitive information
Whiteboard on the shared region can be toggled on/off to draw diagrams using various shapes, lines, and text
The MacOS app is available on the Apple App Store now. Try it for free for 7 days, then it's a one-time purchase for use on all of your MacOS devices. No subscription necessary, and no ads.
About RegionMirror on Product Hunt
“Share a portion of your ultrawide or high-res screen on Mac”
RegionMirror launched on Product Hunt on July 21st, 2026 and earned 115 upvotes and 32 comments, placing #21 on the daily leaderboard. Define a region of your screen to be shared from your ultrawide or high resolution monitor, preventing the inevitable "can you zoom in?" that comes with sharing the entire screen. Define any size region to share, move apps in and out of the region seamlessly, resize the region on the fly, set a default region and invoke with a keyboard shortcut for quick and easy sharing. Blur for privacy. Scaled presenter view displays the content your viewers are seeing. Integrated annotations and whiteboard.
On the analytics side, RegionMirror competes within Mac, Productivity and Menu Bar Apps — topics that collectively have 772.4k followers on Product Hunt. The dashboard above tracks how RegionMirror performed against the three products that launched closest to it on the same day.
Who hunted RegionMirror?
RegionMirror was hunted by Matt@RegionMirror. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of RegionMirror including community comment highlights and product details, visit the product overview.
Matt@RegionMirror
Hi Product Hunt!
I'm Matt, solo dev and creator of RegionMirror.
I built RegionMirror out of the need to find a solution to share my 49" Ultrawide screen with colleagues using Teams, Slack, and other meeting platforms. Sharing the entire screen with someone not rocking a monster-sized screen on the receiving end of the screen share makes the content very small and unreadable. Prior to RegionMirror, sharing just a single window was how I worked around it, but that became annoying and disruptive to my flow when having to switch back and forth between applications.
With RegionMirror, you can define a portion of the screen to share and then use the "Share a window" function of the meeting tool. Then you simply move applications into the region as needed, or move the region to the applications. The shared region can be moved or resized as needed on the fly without ever stopping sharing.
You can also set up a default region that can be activated with a keyboard shortcut that you can define per monitor. This allows you to very quickly set up a screen region without having to navigate the RegionMirror menu and draw the region- just execute the shortcut and then share the region window. I find this is great for quick unplanned screen sharing sessions.
Some other notable features include:
Scaled-down and resizable presenter view displays exactly what users are seeing
Pointer and text annotations to highlight shared content
Blur the screen when entering passwords or other sensitive information
Whiteboard on the shared region can be toggled on/off to draw diagrams using various shapes, lines, and text
The MacOS app is available on the Apple App Store now. Try it for free for 7 days, then it's a one-time purchase for use on all of your MacOS devices. No subscription necessary, and no ads.