Window-Shading App for macOS

WindowMizer Release Notes

The complete History of changes made to WindowMizer.

Version 6.2.0August 3, 2026

WindowMizer 6.2.0

Release Date: August 03, 2026

System Requirements: macOS 15.3 or higher (Sequoia)

Release Notes for WindowMizer 6.2.0

  • New: Classic / Dynamic Title Bar style settings.
  • New: Separate Title Bar style settings for Finder and App-specific.
  • Improve: Reduce and restore are now faster when Hide System Animations is on.
  • Fix: Tiny WM App icon in Get Info and elsewhere.
  • Fix: Defer Sparkle Software Update alert until 5x reduce.
  • Fix: Same-pixel titlebar double-clicks could be ignored.
  • Fix: Recreate placeholder images after System Appearance change (light/dark mode).
  • Note: Placeholder strips must be restored and re-collapsed for Appearance changes to take effect.
  • Fix: Finder strip height after switching toolbar view options between Icon Only / Icon and Text.
  • Fix: Finder traffic lights sitting too low on Toolbar Icon and Text placeholder strips.
  • Fix: Title-bar strips stay in front when reducing or restoring other windows.
  • Fix: Compatibility issue with Adobe Premiere Pro.
  • Add: Application preset for Adobe Premiere Pro.
  • Add: Show a confirmation alert when disabling SCK in WindowMizer.
  • Updated: Help Book to align with settings changes.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Upgrade Details:

  • WindowMizer 6 is a paid upgrade from WindowMizer 5.
  • Buying New or Upgrade issues a new WM6 activation code. That code activates WM5 or WM6 (shared pool of 3 activations).
  • If you upgrade: the old WM5 code is marked Upgraded and stops working. Use only the new code.
  • If you do not upgrade a WM5 perpetual license: that code keeps working for WM5 only.
  • If you do not upgrade a WM5 subscription: it works until it expires and will not renew.
  • New WM5 licenses are not sold.

Version 6.1.3July 31, 2026

WindowMizer 6.1.3

Release Date: July 31, 2026

System Requirements: macOS 15.3 or higher (Sequoia)

Release Notes for WindowMizer 6.1.3

  • Fix: Prevent crash on wake/display configuration changes.
  • Fix: Sound misconfiguration when resetting WindowMizer settings.
  • Tweak: Change Privacy settings text to say Send - instead of Share.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Upgrade Details:

  • WindowMizer 6 is a paid upgrade from WindowMizer 5.
  • Buying New or Upgrade issues a new WM6 activation code. That code activates WM5 or WM6 (shared pool of 3 activations).
  • If you upgrade: the old WM5 code is marked Upgraded and stops working. Use only the new code.
  • If you do not upgrade a WM5 perpetual license: that code keeps working for WM5 only.
  • If you do not upgrade a WM5 subscription: it works until it expires and will not renew.
  • New WM5 licenses are not sold.

Version 6.1.2July 30, 2026

WindowMizer 6.1.2

Release Date: July 30, 2026

System Requirements: macOS 15.3 or higher (Sequoia)

Release Notes for WindowMizer 6.1.2

  • Fix: Shortcut recorders now record, clear, and persist correctly across relaunch.
  • Fix: Unregisters the Action global shortcut when an Action is disbled.
  • Fix: Prevent disabled Action shortcuts from swallowing keys in other apps.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Upgrade Details:

  • WindowMizer 6 is a paid upgrade from WindowMizer 5.
  • Buying New or Upgrade issues a new WM6 activation code. That code activates WM5 or WM6 (shared pool of 3 activations).
  • If you upgrade: the old WM5 code is marked Upgraded and stops working. Use only the new code.
  • If you do not upgrade a WM5 perpetual license: that code keeps working for WM5 only.
  • If you do not upgrade a WM5 subscription: it works until it expires and will not renew.
  • New WM5 licenses are not sold.

Version 6.1.1July 29, 2026

WindowMizer 6.1.1

Release Date: July 29, 2026

System Requirements: macOS 15.3 or higher (Sequoia)

Release Notes for WindowMizer 6.1.1

  • Change buy button links to go to windowmizer.com home page.
  • Align Upgrade Details in Release Notes to match website.
  • Include telemetry data for DIH and Finder window stacking usage.
  • Checkout the cool WindowMizer Stats counter at the website!
  • Enable ‘Share WindowMizer Analytics’ in Settings to contribute to the Stats.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Upgrade Details:

  • WindowMizer 6 is a paid upgrade from WindowMizer 5.
  • Buying New or Upgrade issues a new WM6 activation code. That code activates WM5 or WM6 (shared pool of 3 activations).
  • If you upgrade: the old WM5 code is marked Upgraded and stops working. Use only the new code.
  • If you do not upgrade a WM5 perpetual license: that code keeps working for WM5 only.
  • If you do not upgrade a WM5 subscription: it works until it expires and will not renew.
  • New WM5 licenses are not sold.

Version 6.1.0July 26, 2026

WindowMizer 6.1.0

Release Date: July 26, 2026

System Requirements: macOS 15.3 or higher (Sequoia)

Release Notes for WindowMizer 6.1.0

  • Replace Privacy web sheet with Analytics Info
  • Decrease activated license validation checks
  • Allow re-running trial after 90 days have elapsed
  • Remove unused marketing email opt-in setting
  • Remove obsolete development staging server code
  • Remove obsolete Beta handling code
  • Remove subscription licensing remnants
  • Improvements to client/server communications

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Upgrade Details:

  • WindowMizer 6 is a paid upgrade from WindowMizer 5.
  • Buying New or Upgrade issues a new WM6 activation code. That code activates WM5 or WM6 (shared pool of 3 activations).
  • If you upgrade: the old WM5 code is marked Upgraded and stops working. Use only the new code.
  • If you do not upgrade a WM5 perpetual license: that code keeps working for WM5 only.
  • If you do not upgrade a WM5 subscription: it works until it expires and will not renew.
  • New WM5 licenses are not sold.

Version 6.0.9July 19, 2026

WindowMizer 6.0.9

Release Date: July 19, 2026

System Requirements: macOS 15.3 or higher (Sequoia)

Release Notes for WindowMizer 6.0.9

  • Updated for macOS Sequoia (v15).
  • Requires macOS 15 or higher.
  • New: Custom title bar heights.
  • New: Desktop Icon Hiding feature.
  • New: Global Shortcut to Hide Desktop Icons and show Custom Wallpaper.
  • New: Finder Window Stacking feature.
  • Modernized: Launch at Login feature to use modern swift API.
  • Change: Rename “Preferences” to “Settings” to conform with Apple terminology.
  • Change: Allow collapsing the WindowMizer “Settings” window.
  • Fixed: Window Menu diamond icon for dark theme.
  • New: Add Collapsed windows to Dock Menu (grouped by App).
  • New: Option to show icons in Window menu.
  • New framework: “KeyboardShortcuts” by sindresorhus. Imported via SPM.
  • New framework: “Settings” by sindresorhus. Imported via SPM.
  • Removed framework: “Microsoft AppCenter”. Deprecated March 31, 2025
  • Updated framework: “Settings” by sindresorhus. Imported via SPM.
  • Updated framework: “AXSwift” by tmandry. Imported via SPM.
  • Remove discontinued shortcut framework MASShortcut. Replace with “KeyboardShortcuts”.
  • Updated Help Book content.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Upgrade Details:

  • WindowMizer 6 is a paid upgrade from WindowMizer 5.
  • Buying New or Upgrade issues a new WM6 activation code. That code activates WM5 or WM6 (shared pool of 3 activations).
  • If you upgrade: the old WM5 code is marked Upgraded and stops working. Use only the new code.
  • If you do not upgrade a WM5 perpetual license: that code keeps working for WM5 only.
  • If you do not upgrade a WM5 subscription: it works until it expires and will not renew.
  • New WM5 licenses are not sold.

Version 6.0.8July 9, 2026

WindowMizer 6.0.8

Release Date: July 09, 2026

System Requirements: macOS 15 or higher (Sequoia)

Release Notes for WindowMizer 6.0.8:

  • Fixed a brief flash when reducing windows on M1 Macs running Tahoe.
  • Fixed a launch crash on Sequoia when the app was built with the latest Xcode (missing ScreenCaptureKit API).

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Version 6.0.7July 9, 2026

WindowMizer 6.0.7

Release Date: July 09, 2026
System Requirements: macOS 15 or higher (Sequoia)

Release Notes for WindowMizer 6.0.7:

  • Apply Include beta updates without requiring relaunch.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Version 6.0.6July 9, 2026

WindowMizer 6.0.6

Release Date: July 09, 2026

System Requirements: macOS 15 or higher (Sequoia)

Release Notes for WindowMizer 6.0.6:

  • Improved Accessibility setup and handling when permission is lost.
  • Display an alert when Accessibility is turned off while WindowMizer is running.
  • Optimized repeated Finder reduce action when the window has not changed.
  • Fixed a memory leak caused by not releasing hidden windows.
  • Added option to hide-animations for Reduce to Title Bar action.
  • Better thumbnail grid layout and size slider.
  • Improvements to single-click thumbnail restore.
  • Smoother opacity sliders - removed snapping to tick marks.
  • Fixed app and window menus while Settings is focused.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Version 6.0.5July 4, 2026

WindowMizer 6.0.5

Release Date: July 04, 2026

System Requirements: macOS 15 or higher (Sequoia)

Release Notes for WindowMizer 6.0.5:

  • Re-introduce option to restore Thumbnail windows on single-click.
  • Update help book with the restored “Single-click restores full-size window” setting.
  • Menu bar now shows the app name sooner when switching between placeholder strips.
  • Reducing a window no longer flashes the wrong app name or “Application” in the menu bar.
  • Fixed issue where the menu bar stayed blank after reducing windows.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Version 6.0.4July 4, 2026

WindowMizer 6.0.4

Release Date: July 04, 2026

System Requirements: macOS 15 or higher (Sequoia)

Release Notes for WindowMizer 6.0.4:

  • Fixed overlay windows from showing the wrong monitor’s snapshot on multi-display setups.
  • Works with three or more monitors.
  • Works when monitors share the same size and resolution.
  • Fixes enlarged, distorted, or shifted overlay flashes during reduce to titlebar.
  • Overlay window’s rebuild automatically if display count changes.
  • Added relevant System Settings to feedback data email attachment.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Version 6.0.3July 3, 2026

WindowMizer 6.0.3

Release Date: July 03, 2026

System Requirements: macOS 15 or higher (Sequoia)

Release Notes for WindowMizer 6.0.3:

  • Fixed compatibility with System Settings > Reduce Transparency (On/Off).
  • Prevents duplicate/overlaying menu bars during reduce when Reduce Transparency is off.
  • Reduce and restore overlays now exclude the Dock from the snapshot when appropriate.
  • Overlay snapshot is cropped to the visible desktop area to match the screen better.
  • When Reduce Transparency is on, overlay uses the previous full-screen behavior to avoid menu bar flicker.
  • Parent App menu title updates sooner during reduce so it no longer flashes “Application”.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Version 6.0.2June 28, 2026

WindowMizer 6.0.2

Release Date: June 28, 2026

System Requirements: macOS 15 or higher (Sequoia)

Release Notes for WindowMizer 6.0.2:

  • Fixed a crash that could occur when you collapse or expand a window by double-clicking the title bar, especially on first use.
  • Fixed a crash that could occur during first launch while macOS is asking for Accessibility or Screen Recording permission.
  • Improved stability of the Privacy Policy sheet in Settings.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Version 6.0.1June 28, 2026

WindowMizer 6.0.1

Release Date: June 28, 2026

System Requirements: macOS 15 or higher (Sequoia)

Release Notes for WindowMizer 6.0.1:

  • WindowMizer 6 Beta 1 Update test.
  • Test the software update mechanism for Include Beta Updates channel.
  • Should be offered as an update if Include Beta Updates is enabled.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.

Version 6.0.0June 28, 2026

WindowMizer 6.0.0

Release Date: June 28, 2026

System Requirements: macOS 15 or higher (Sequoia)

Release Notes for WindowMizer 6.0.0:

  • WindowMizer 6 Beta 1 Release.

Build Notes

  • Built on macOS Golden Gate with Xcode 27 and Swift version 5.
  • Complete history of updates.
Version 5.5.3January 1, 2023

WindowMizer 5.5.3

Release Date: January 01, 2023

System Requirements: macOS 10.12 or higher

Release Notes for WindowMizer 5.5.3:

  • Fixed issue with non-playing sound effects after restarting.
  • Fixed issue with non-playing sounds unless volume was adjusted.
  • Added a New title bar double-click action for “Enter Full Screen”.
  • Update in-app Help Book with changed/missing content.
  • Misc bug fixes for macOS Ventura.
  • Built on macOS 12.6.2 with Xcode 13.4.1 and Swift version 5.6.1
  • Complete history of updates.

Release Details:

This update is free for all WindowMizer 5 Subscribers and License holders.

Windows can now be sent to the Dock or to Full Screen mode without leaving a placeholder window on-screen. Action modifier keys can be configured so that a window will “Roll-up” in one case, “Minimize” in another case, and “Enter Full Screen” in yet another case.


Version 5.5.2October 16, 2022

WindowMizer 5.5.2

Release Date: October 16, 2022

System Requirements: macOS 10.12 or higher

Release Notes for WindowMizer 5.5.2:

  • Fix general window-shading issues on macOS Ventura.
  • Fix transparent window image alignment.
  • Fix issues with double-click actions combined with modifier keys.
  • Built on macOS 12.6 with Xcode 14.0.1 and Swift version 5.7
  • Complete history of updates.

Release Details:

This update is free for all WindowMizer 5 Subscribers and License holders.

WindowMizer 5.5 runs natively on Apple’s new processors! No longer requires Rosetta on arm64 hardware. It may appear that not much has changed in WindowMizer 5.5, however, under-the-hood this update contains significant security and modernization improvements and is recommended for all users.


Version 5.5.1August 29, 2022
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WindowMizer 5.5.1

Release Date: August 29, 2022

System Requirements: macOS 10.12 or higher

Release Notes for WindowMizer 5.5.1:

  • NEW! WindowMizer is now a Universal Binary.
  • Fully compatible with macOS Ventura preview.
  • Runs natively on Apple Silicon processors.
  • Does not require installation of Rosetta.
  • Faster roll-up of multiple windows.
  • Updated Preferences UI with modern appearance.
  • Updated WindowMizer ReadMe contained on WindowMizer.dmg.
  • Improved security of Software Update delivery.
  • Built on macOS 12.5.1 with Xcode 13.4.1 and Swift version 5.6.1
  • Complete history of updates.

Release Details:

This update is free for all WindowMizer 5 Subscribers and License holders.

WindowMizer 5.5 runs natively on Apple’s new processors! No longer requires Rosetta on arm64 hardware. It may appear that not much has changed in WindowMizer 5.5, however, under-the-hood this update contains significant security and modernization improvements and is recommended for all users.


Version 5.4.3July 11, 2021

WindowMizer 5.4.3

Release Date: July 11, 2021

System Requirements: macOS 10.12 or higher

Release Notes for version 5.4.3:

  • Fixed issue causing Finder window column sizes to change after window-shading a window.
  • Fixed incorrect ‘active’ window issue when restoring special Finder windows.
  • Added missing title bar icons for special Finder windows such as ‘Get Info’.
  • Changed verbiage in ‘Show Licence’ window to clarify that perpetual licenses do not expire.
  • Built on macOS 11.4 with Xcode 12.5 and Swift version 5.4
  • This is a FREE update for all version 5.x license holders/subscribers.
  • Complete history of updates.

Release Details:

Fixed an issue that would cause column sizes to arbitrarily change when window-shading Finder windows. In other words, when minimizing and restoring a Finder window, the Name, Size or Date column would be a different after collapsing and restoring Finder windows. Correct column sizes are now maintained. Also resolved an ‘active’ window issue when restoring ‘special’ Finder windows such as: Get Info, Connect to Server, Network, and Search results windows. Changed the text in ‘Show License’ window to clarify that perpetual licences do not expire but that a perpetual license is only valid for the current ‘major’ version and any bug fixes for that version.


Version 5.4.2June 14, 2021

WindowMizer 5.4.2

Release Date: June 14, 2021

System Requirements: macOS 10.12 or higher

Release Notes for version 5.4.2:

  • Fixed Thumbnail window grid placement when using multiple Spaces.
  • Fixed drawing issue triggered by a display resolution change.
  • Security improvements for code-signed updates.
  • Built on macOS 11.4 with Xcode 12.5 and Swift version 5.4
  • This is a FREE update for all version 5.x license holders/subscribers.
  • Complete history of updates.

Release Details:

Fixed Thumbnail window grid placement when using multiple Spaces. Fixes a drawing issue that would occur when the screen resolution is changed. Replaced software update certificates with modern versions.


Version 5.4.1February 25, 2021

WindowMizer 5.4.1

Release Date: February 25, 2021

System Requirements: macOS 10.12 or higher

Release Notes for version 5.4.1:

  • Re-fix Thumbnail window positioning with ‘Assign to All Desktops’.
  • See history for a list of recent Thumbnail Window changes and bug fixes.
  • Built on macOS 10.15.7 with Xcode 12.4 and Swift version 5.3.2
  • This is a FREE update for all version 5.x license holders/subscribers.
  • Complete history of updates.

Release Details:

Updates Thumbnail windows to really honor the ‘Assign to All Desktops’ Dock setting. This patch prevents multiple Thumbnail Windows from being placed at the same position. I was just kidding the last time I said I fixed this.


Version 5.4February 25, 2021

WindowMizer 5.4

Release Date: February 25, 2021

System Requirements: macOS 10.12 or higher

Release Notes for version 5.4:

  • Completely rework Thumbnail window arrangement, icons and grid layout.
  • Add custom Thumbnail Window animations for smoother transitions.
  • Fix Thumbnail window positioning with ‘Assign to All Desktops’.
  • Add preference for double-click to restore ALL window types.
  • EventTap bug fixes and optimizations.
  • Finalize WM5 language localizations using AI.
  • Bug fixes are thanks to user-reported Feedback.
  • Built on macOS 10.15.7 with Xcode 12.4 and Swift version 5.3.2
  • This is a FREE update for all version 5.x license holders/subscribers.
  • Complete history of updates.

Release Details:

Thumbnail windows now honor the ‘Assign to All Desktops’ setting and prevents multiple thumbnail windows from being placed at the same position. Thumbnail Windows now transition using a custom animation. There is a new preference setting to allow double-click to restore ALL window types. Underlying EventTaps have been optimized and several bugs have been squashed. Localizations have been completed using Google translate, so everything is localized but the quality is undetermined.


Version 5.3.1December 10, 2020

WindowMizer 5.3.1

Release Date: December 10, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.3.1:

  • Add multi-desktop support for: Assign to All Desktops.
  • Fix saving of user-modified Action shortcuts.
  • Fix overlay window on multi-display systems.
  • Bug fixes are thanks to user-reported Feedback.
  • Built on macOS 10.15 with Xcode 12.2 and Swift version 5.3.
  • This is a FREE update for all version 5.x license holders/subscribers.
  • Complete history of updates.

Release Details:

This update accomodates adding an Application to All Desktops. If an app is assigned to All Desktops, then WM windows representing that app are also assigned to All Desktops.


Version 5.3December 1, 2020

WindowMizer 5.3

Release Date: December 01, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.3:

  • Add custom support for Books.app: Library & book windows.
  • Ignore Stickies.app in WM. Already has window collapsing.
  • Fix erroneous focus-ring on Activation & Alert buttons.
  • Fix Minimize to Dock action for One Window and One App targets.
  • Fix Feedback form error preventing multiple uses.
  • Fix several bugs and crashes reported by users.
  • Update frameworks to universal binary versions for BigSur.
  • Built on macOS 10.15 with Xcode 12.2 and Swift version 5.3.
  • This is a FREE update for all version 5.x license holders/subscribers.
  • Complete history of updates.

Release Details:

This update contains universal binary versions of supporting frameworks. This is the first step towards building a universal binary version of WindowMizer.


Version 5.2.1November 9, 2020

WindowMizer 5.2.1

Release Date: November 09, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.2.1:

  • Fix the Window menu contents on macOS 10.15 and BigSur
  • Updated app icon to a squircle for macOS 11 (BigSur).
  • Built on macOS 10.15 with Xcode 12.1 and Swift version 5.
  • This is a FREE update for all version 5.x license holders/subscribers.
  • Complete history of updates.

Release Details:

This update changes the WindowMizer app icon to comply with BigSur specifications. Recommended for all users.


Version 5.2September 5, 2020

WindowMizer 5.2

Release Date: September 05, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.2:

  • Fixed several bugs and errors - Thanks to user-submitted crash reports!
  • Changed default titlebar height for macOS 11 (BigSur).
  • Updated error/warning messages for failed activations.
  • Built on macOS 10.15 with Xcode 11.6 and Swift version 5.
  • This is a FREE update for all version 5.x license holders/subscribers.
  • Complete history of updates.

Release Details:

This update contains several bug fixes and a user-interface adjustment specifically for the upcoming macOS BigSur update. Recommended for all users.


Version 5.1.4July 11, 2020

WindowMizer 5.1.4

Release Date: July 11, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.1.4:

  • Fixed Feedback form connection error.
  • FREE update for all version 5.x license holders/subscribers.
  • Requires re-entering Activation Code when updating from version 5.0.
  • Complete history of updates.

Release Details:

Due to a recent server upgrade, the in-app Feedback form was unable to connect to the server. This update resolves that issue and is recommended for all users.


Version 5.1.3May 31, 2020

WindowMizer 5.1.3

Release Date: May 31, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.1.3:

  • Fixed 6 crash inducing bugs representing over 69 crash reports.
  • Fixed preference panel window-resizing to prevent clipped content.
  • FREE update for all version 5.x license holders/subscribers.
  • Requires re-entering Activation Code when updating from version 5.0.
  • Complete history of updates.

Release Details:

This update fixes several critical bugs that could cause the app to crash. Thanks to everyone who sent Feedback and Crash reports. The feedback and bug reports are extremely helpful, especially those with comments!


Version 5.1.2May 9, 2020

WindowMizer 5.1.2

Release Date: May 09, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.1.2:

  • FREE for all version 5.x license holders/subscribers.
  • Requires re-entering Activation Code when updating from version 5.0.
  • Fix crash when using non-Gregorian calendar in System Preferences > Language & Region.
  • Complete history of updates.

Release Details:

This update is deemed "Transitional" because it is authenticated/secured using two signatures (DSA and EdDSA). The Sparkle.framework which validates WindowMizer in-app updates, is transitioning from using a "Legacy" DSA signature to a "Modern" EdDSA signature. This update is signed using BOTH methods so that "Legacy" versions of WindowMizer (4.x - 5.0.6) can update to this "Transitional" version (5.1.x), then the "Transitional" version (5.1.x) can update to the "modern" version (5.2.x).

What does it all mean?

It simply means that to get from version 5.0.6 (or earlier) to version 5.2.x requires installing THIS update FIRST. All in-app updates will go through version 5.1.x before they can update to version 5.2.x

And then…?

The next release of WindowMizer will bump to version 5.2.0 and will be signed with only the "Modern" signature. The deprecated signature can then be removed from the WindowMizer build process and transition to the new signing will be complete.


Version 5.1.1May 3, 2020

WindowMizer 5.1.1

Release Date: May 03, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.1.1:

  • FREE for all version 5.x license holders/subscribers.
  • Requires re-entering Activation Code when updating from version 5.0.
  • Fixed broken Text Fields for Thumbnail window margins and spacing preferences.
  • Fixed bug that would sometimes cause the license file to not be created.
  • Added option to include an attachment or profile data when submitting bug reports.
  • Clarified ambiguous wording in error messages that might be displayed to users.
  • Updated AXSwift, MASShortcuts, Paddle and MS Analytics frameworks.
  • Updated project to compile using recent Xcode 11.14.1 and Swift 5.2.2.
  • Complete history of updates.

Version 5.1April 6, 2020

WindowMizer 5.1

Release Date: April 06, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.1:

  • Completely replace Trial, Activation & Licensing System.
  • Remove DevMate framework and analytics (discontinued by Paddle).
  • Replace DevMate with AppCenter framework for Crash Reporting & Analytics.
  • Updated Paddle, AppCenter and Sparkle frameworks.
  • Updated Localizations.
  • Complete history of updates.

Release Details:

Due to the discontinuation of the DevMate framework, the entire Trial, Activation and Licensing system needed to be replaced. Trials and Activations are (again) handled directly by RGB World rather than depending on a 3rd party. See the RGB World forums for more details (rant).


Version 5.0.6June 23, 2019

WindowMizer 5.0.6

Release Date: June 23, 2020

System Requirements: macOS 10.12 or higher

Release Notes for version 5.0.6:

  • Fixed: Several issues caused by the New Floating window feature.
  • Fixed: Speed issue introduced with WindowMizer 5.0.5.
  • Added: Thumbnail and Transparent windows can now be floated.
  • Added: Advanced preference setting related to floating windows.
  • Updated Localizations.

Release Details:

Improved support for floating windows. The previous release (5.0.5) has a serious speed issue caused by adding the Floating window feature. This update resolves the speed issue and is recommended for all users.


Version 5.0.5June 16, 2019

WindowMizer 5.0.5

Release Date: June 16, 2019

System Requirements: macOS 10.12 or higher

Release Notes for version 5.0.5:

  • Fixed issue with Event Tap port.
  • Fixed compatibility with FreeChat and WhatsApp.
  • Fixed compatibility with Adobe After Effects and Premier.
  • Added: Floating window options (global & app-specific).

Release Details:

Added initial support for floating windows. Floating windows can be implemented globally, or on an app-specific basis. Compatibility fixes require apps be added to WindowMizer app-specific prefs and configured appropriately. Please see the RGB World User Forums for more details.


Version 5.0.4June 9, 2019

WindowMizer 5.0.4

Release Date: June 9, 2019

System Requirements: macOS 10.12 or higher

Release Notes for version 5.0.4:

  • Hardened runtime for macOS 10.14.5.
  • Notarized by Apple notary service.
  • Rewrite distribution script to auto-notarize.
  • Updated: Japanese localization.
  • Prepare for dicontinuation of DevMateKit.
  • Added: Microsoft AppCenter frameworks to start replacement of DevMateKit.

Release Details:

WindowMizer is now notarized by Apple. The Apple notary service is an automated system that scans software for malicious content. Apple-notarized apps are provided a streamlined Gatekeeper dialog to assure users that an app is not known malware.


Version 5.0.3May 19, 2019

WindowMizer 5.0.3

Release Date: June 9, 2019

System Requirements: macOS 10.12 or higher

Release Notes for version 5.0.3:

  • Fixed: Long-standing bug on macOS 10.13.x that would lockup WindowMizer.
  • Added: Preference setting to disable resizing of collapsed windows.
  • Changed: Shortcut UI style change.
  • Rebuild AxSwift.framework for Swift 5.
  • Safely unwrap optionals in Sound Controller.

Release Details:

The OS 10.13.x bug would occur when clicking or double-clicking on a collapsed window's titlebar at the very top edge (1 pixel) of the window. It took an incredible 150 hours (3 full weeks) to analyze, researh and hopefully fix this issue. The underlying cause is most likely an OS bug, however because the issue occurs only when setting the height of a window's content to zero, it is most likely "unsupported", so a custom work-around was required. If the issue persists, please send a bug report or contact support for assistance.


Version 5.0.2May 5, 2019

WindowMizer 5.0.2

Release Date: May 5, 2019

System Requirements: macOS 10.12 or higher

Release Notes for version 5.0.2:

  • Fixed over 10 bugs reported via crash reports.
  • More Shortcut recording bug fixes.
  • Fixed dark text on black background in About box.

Release Details:

Thanks for the bug reports submitted via crash reporter / feedback forms. The are immensely helpful.


Version 5.0.1April 29, 2019

WindowMizer 5.0.1

Release Date: Apr 29, 2019

System Requirements: macOS 10.12 or higher

Release Notes for version 5.0.1:

  • Fix window-shading in Messages.app
  • Fix issues with shortcut-recording UI
  • Prevent Quitting apps when command+A is pressed on certain keyboards
  • Miscellaneous bug fixes

Release Details:

Thanks for the bug reports submitted via crash reporter / feedback forms. The are immensely helpful.


Version 5.0January 18, 2019

WindowMizer 5.0

Release Date: Jan 18, 2019

System Requirements: macOS 10.12 or higher

Release Notes for version 5.0:

  • Completely rewritten in the Swift programming language (formerly written in Obj-C).
  • Supports macOS 10.12 and higher
  • Dark Mode interface on macOS Mojave (10.14)
  • Uses modern API's for improved efficiency & security
  • Supports the General Data Protection Regulation (GDPR)
  • In-application checkout via Paddle (PayPal & Credit Cards)
  • Built-in Feedback and Crash Reporting
  • Eliminated "Offscreen" window handling

General WindowMizer 5 Release Notes:

WindowMizer 5 is a paid upgrade from WindowMizer 4 and requires macOS 10.12 or higher. Systems prior to 10.12 must use WindowMizer 4.x.

WindowMizer 5 offers both subscription and permanent license options. Subscriptions provide a more predictable revenue to fund development of WindowMizer. A permanent license option is still offered but it does not include major version updates.

WindowMizer 5.0 Features:

  • Supports macOS 10.12 and higher
  • Dark Mode interface on macOS Mojave (10.14) and greater
  • NEW! Floating Window feature
  • Uses modern API’s for improved efficiency & security
  • Supports the General Data Protection Regulation (GDPR)
  • In-application checkout via Paddle (PayPal & Credit Cards)
  • Built-in Feedback and Crash Reporting
  • Notarized by Apple notary service

Written in Swift programming language

Completely rewritten in the Swift programming language (formerly written in Obj-C).

Advantages of Swift code base

  • Compiles into a faster executing application
  • Safer due to strict type-checking
  • Modern language simplifies development
Version 4.4.2 Sep 23, 2016

WindowMizer 4.4.2

  • Added Display preferences for multiple displays
  • Fixed Move-Offscreen window handling with multiple displays
  • Fixed bugs with close, minimize and zoom buttons
  • Fixed possible crash when closing collapsed windows
  • Ignore Stickies.app (has built-in collapse)
  • Updated WindowMizer Help Book (internal and online)

Version 4.4.1 July 31, 2016

WindowMizer 4.4.1

  • Removed: Key-down and Dock-click Event Taps
  • Removed: AppleScript window-shading option
  • Added: Shortcut to minimize window without placeholder
  • Fixed: Localized global shortcuts used internally
  • Improved: Better support for multiple displays (2)
  • Improved: Separate prefs for controlling animations
  • Updated: Built-in and online Help Books
  • Built with Mac OS X 10.10 SDK and Xcode 6.4 to support OS X 10.6

Version 4.4 June 15, 2016

WindowMizer 4.4

  • Improved security via HTTPS protocol
  • Added: Cycle through Windows and Tabs
  • Added: Per-application window destination
  • Added: Per-application title bar double-click handling
  • Added: Per-application title bar double-click height
  • Fixed: Move-Offscreen window handling with the Dock on the right
  • Fixed: Allow partially offscreen collapsed windows
  • Fixed: Better compatibility with application Hiding
  • Fixed: Thumbnail window names on mouse-hover
  • Fixed: Window-shading in Xcode, Entourage 2008 and others
  • Fixed: Restoring windows when quitting WindowMizer
  • Fixed: Eliminate duplicate Help menu item
  • Updated: ShortcutRecorder.framework
  • Updated: MASPreferences
  • Updated: Built-in and online Help Books
  • Built with Mac OS X 10.10 SDK and Xcode 6.4 to support OS X 10.6

Version 4.3.1 September 14, 2015

WindowMizer 4.3.1

  • Changed Default Preference to use New Off-Screen window handling

Version 4.3.0 September 12, 2015

WindowMizer 4.3.0

  • 3x Faster than previous versions!
  • Updated for Mac OS 10.11 El Capitan
  • New Off-Screen window handling mode
  • Moved AppleScript code to Obj-C class
  • Fix localization of Applescript number formats
  • Async code execution prevents beachball with multiple windows
  • Reorganize preference settings
  • Misc Bug fixes and improvements
  • Localization updates
  • Updated Help file

Version 4.2.1 May 11, 2015

WindowMizer 4.2.1

  • Speed Optimizations
  • Cached sounds for quicker collapsing and restoring of windows
  • Scan menus only for apps that require pressing menu items
  • Removed splash screen. Not needed with quicker launch time
  • Enhanced: Mail window to dynamically update the window title
  • Fixed: Xcode Documentation window to work with AppleScript
  • Fixed: Memory leak when adjusting Sound preferences
  • Fixed: Demo date expired bug in non-English languages
  • Fixed: Help Book menu item in all non-English languages
  • Localization updates
  • Updated Help file

Version 4.2 May 3, 2015

WindowMizer 4.2

  • Completed implimentation of Applescript window-shaded windows
  • Fixed Finder windows to restore to their original height
  • Fixed all AppleScript-shaded windows to restore to their original height
  • Fixed global shortcuts with AppleScript shaded windows
  • Fixed global shortcuts for multiple windows
  • Fixed handling of Microsoft Entourage 2008 windows
  • Better handling of Adobe application windows
  • Miscellaneous bug fixes and improvements
  • Extended free trial to 14 days
  • Demo requires internet connection
  • Updated Help file

Version 4.1 January 12, 2015

WindowMizer 4.1

  • REAL window-shading in many common apps including: The Finder, App Store, Chrome, Firefox, Safari, Mail, TextEdit, BBEdit, Xcode and more!
  • Custom AppleScripts can be ran when a double-click occurs in a title bar
  • New preferences settings to configure AppleScript window-shading
  • Fixed a title bar transparency bug
  • Fixed a bug causing WM to crash during launch
  • Fixed a bug when loading the sounds preference pane
  • Update WindowMizer Help Viewer documentation
  • Miscellaneous bug fixes and improvements
  • Language updates

Version 4.0.1 December 11, 2014

WindowMizer 4.0.1

  • Fully Supported on OS X Yosemite
  • Increased Demo time to 30 minutes
  • Activation via Keycode only
  • Japanese Language updates
  • Bug fixes

Version 4.0 October 19, 2014

WindowMizer 4.0

  • Fully Supported on OS X Yosemite
  • Demo now runs for 20 minutes and can be ran repeatedly
  • Demo no longer requires an internet connection
  • Simplified activation to use a key-code or account login
  • Larger thumbnail icons with placement settings
  • Miscellaneous bug fixes and improvements
  • This update requires that you reactivate the application

Version 3.4.1 July 11, 2014

WindowMizer 3.4.1

  • Thumbnail window improvements…
  • Added preference item for adjusting Screen Margins
  • Added preference item for adjusting Window Spacing
  • Independent window grid for each Mission Control “Space”
  • Better “Spaces” support across multiple displays
  • Fixed issue causing empty cells in window grid

Version 3.4 June 21, 2014

WindowMizer 3.4

  • Added sound effects for all actions
  • Added volume control for sound effects
  • Added Application icon to Thumbnail windows (optional)
  • Added Arrangement options for Thumbnail windows
  • Added option to restore Thumbnail windows to initial location
  • Added functional mini title bar to Thumbnail windows
  • Added contextual menu to Thumbnail windows
  • Added option to disable contextual menus and/or Window menu
  • Bug fixes for contextual menus
  • Improvements to displaying the window name on hover
  • Live updating of windows when adjusting preferences
  • Fixed “single-click restore” to apply to Thumbnail windows only
  • Various bug fixes and improvements

Version 3.3 April 25, 2014

WindowMizer 3.3

  • Added “Reduce to Thumbnail” action
  • Added “Minimize to Dock” action
  • Added buttons to reset preferences to default settings
  • Fix 200% transparent window content on retina displays
  • Improved translations
  • Updated in-app and online Help Book
  • Various bug fixes and improvements

Version 3.2.1 April 6, 2014

WindowMizer 3.2.1

  • Added custom code to support Microsoft Entourage 2008
  • Added option to Disable Notifications
  • Added option to hide splash screen
  • Added optional “Confirm Quit” alerts
  • Bring WM windows to front when selected from Status Menu
  • Fixed “Window” menu to list all open windows in represented app
  • Fixed bug that could cause WindowMizer to crash when launching
  • Fixed bug preventing a preference item from saving
  • Fixed code-signing on OS 10.6 (again)
  • Fixed icon size in alerts and message windows on OS 10.6
  • Automated deployment to reduce risk of errors when releasing updates
  • Updated in-app and online Help Book
  • Various bug fixes and improvements

Version 3.2 March 16, 2014

WindowMizer 3.2

  • Improvements for OS 10.9 Mavericks
  • Fixed multiple-display issues
  • Fixed crash when rearranging displays
  • Added option to show Application icon in title bar
  • Added support for Adobe® “Application Frame” windows
  • Added support for iBooks® windows
  • Security improvements with SSL connections
  • Various bug fixes and improvements

Version 3.1 October 23, 2013

WindowMizer 3.1

  • Added Support for OS 10.9 Mavericks

Version 3.0 October 5, 2013

WindowMizer 3.0

  • Ability to remove the WindowMizer icon from the Dock.
  • Alternative Menu-Icon interface for accessing preferences.
  • Auto-resizing of windows to fit on screen.
  • Toggle mode for global shortcuts.
  • Resizable and scrollable transparent windows
  • Optional sound effects when reducing and restoring windows.
  • User-definable windowshade modifier keys.
  • Application-specific settings.
  • Contextual Window List.
  • Bug fixes and Speed improvements.

Version 2.2 October 21, 2013

WindowMizer 2.2

  • Bug Fixes and Maintenance

Version 2.1 May 4, 2013

WindowMizer 2.1

  • Added 14 day Demo
  • Improved French and German translations
  • Various bug fixes

Version 2.0 February 2, 2013

WindowMizer 2.0

  • Fixed black screen flicker when hiding system window animations in Mountain Lion
  • Fixed issues with double-clicking a titlebar using modifier keys
  • Fixed global shortcut key to minimize windows
  • Added global shortcut key to Minimize All windows in an application
  • Added a preference to enable/disable global shortcuts
  • Added a preference to enable/disable double-click modifier keys
  • Fixed miscellaneous bugs and issues with collapsing windows
  • Localized into 8 languages
  • Enhanced the Window menu to list all of an application’s windows
  • Added a Make Transparent option when double-clicking a titlebar
  • Separated minimize behavior into an action and an animation effect for possible future enhancements
  • Added option to trust WindowMizer rather than requiring “Allow access for assistive devices”
  • Enhanced preferences by adding a toolbar
  • Added Help book