ScreenZoomer macOS

Screen Magnifier & Navigator

About ScreenZoomer

ScreenZoomer is a native macOS screen magnifier for visually impaired users and anyone who needs to enlarge parts of the screen in real time. It magnifies up to 20× around the mouse cursor, follows the keyboard focus, and can invert colors for better contrast — all controlled by a compact floating panel and global keyboard shortcuts.

Available on the Mac App Store: apps.apple.com/app/id6761250606

Features

Magnification — real-time zoom from 1× to 20× around the mouse cursor
Follow Keyboard Focus — the view centers on the current text caret
Follow Mouse Cursor — the zoom area follows the pointer
Invert Colors — invert colors inside the magnified area for better contrast
Shared Zoom — expose the magnified view to screen-sharing tools
Cursor customization — adjust cursor size and style
Navigation / Bookmarks — save and jump to screen positions and app windows
Global Keyboard Shortcuts — toggle zoom, change factor, show/hide the control panel
Multilingual UI — 41 languages available via the system language setting

System requirements

macOS 26.3 (Tahoe) or higher
Screen Recording permission (for ScreenCaptureKit)
Accessibility permission (for global hotkeys and follow-keyboard-focus)

Subscription

7-day free trial — starts automatically on first launch. No credit card or sign-in required.
Monthly subscription (product ID com.chabasan.ScreenZoomer.monthly)
Yearly subscription (product ID com.chabasan.ScreenZoomer.yearly)
Management & cancellation only via the macOS App Store / Apple-ID.
After the trial ends, zoom is disabled until a subscription is active.

Contact

Support is provided by e-mail. Send a message to info@chabasan.com and please include your macOS version, the ScreenZoomer version (shown in the App Store) and a short description of what you tried. Replies usually go out within a few business days.

FAQ

1. Permissions

Q: What permissions does ScreenZoomer need?

A: ScreenZoomer needs two macOS permissions to work:

Screen Recording — so the app can capture the screen area that is being magnified.
Accessibility — so the app can react to global keyboard shortcuts and follow the keyboard focus between apps.

Grant both in System Settings → Privacy & Security:

Open System Settings.
Go to Privacy & Security → Screen Recording and enable ScreenZoomer.
Go to Privacy & Security → Accessibility and enable ScreenZoomer.
Relaunch the app if it is running.

2. How to zoom

Q: How do I start zooming?

A: Open the control panel and turn on the Magnification toggle, or press the global hotkey Shift + F1 to show/hide the control panel at the mouse position. Adjust the zoom factor with the slider (1× to 20×) or the +/− buttons. You can also remap all hotkeys under Keyboard Shortcuts.

3. Hotkey stopped working

Q: My keyboard shortcut doesn’t work anymore.

A: This is almost always caused by a missing Accessibility permission. Open System Settings → Privacy & Security → Accessibility, make sure ScreenZoomer is enabled, then relaunch the app. If the hotkey still does not trigger, try a different key combination under Keyboard Shortcuts — some keys are reserved by the system or by another app.

4. Free trial and subscription

Q: How does the free trial work?

A: ScreenZoomer starts a 7-day free trial automatically the first time you launch it. No credit card or sign-in is required to start. During the trial all features are available. Before the trial ends, pick a monthly or yearly subscription inside the app (click Subscription… in the menu-bar icon or tap the trial banner at the top of the control panel). You can cancel any time in System Settings → your Apple-ID → Subscriptions.

5. Restore a purchase

Q: I bought a subscription but my new Mac doesn’t see it.

A: Open the subscription panel inside ScreenZoomer (Subscription… in the menu-bar icon) and tap Restore Purchases. Make sure the new Mac is signed in with the same Apple-ID that originally bought the subscription. Subscriptions are tied to the Apple-ID, not to the device.

6. Zoom feels slow or laggy

Q: The magnified image feels slow or laggy.

A: First make sure Screen Recording permission is granted — without it the app falls back to a slower code path. Next, check whether an external display is in use: ScreenZoomer always zooms the display where the mouse is. If many apps are running, closing some can free GPU bandwidth. ScreenZoomer uses Metal and ScreenCaptureKit and is tuned for real-time performance on Apple-Silicon Macs.

7. Contact support

Q: How do I contact support?

A: Send an e-mail to info@chabasan.com. Please include your macOS version, the ScreenZoomer version (shown in the App Store) and a short description of what you tried. Replies usually go out within a few business days.

Privacy & Terms

The app does not collect any personal data: no telemetry, no analytics, no tracking. Settings are stored locally; optional iCloud sync via NSUbiquitousKeyValueStore (own settings only, between Macs signed in to the same Apple-ID).

The legal documents below are provided in German, as legally validated for our German-based business.