Steps to evaluate where it comes from.
Switch User to see if it is user specific
Restore Disk permissions.
Start in Safe mode to eliminate 3d party applications
It looks like it is a left over from some app that did not close properly, next time if it happens remember what app you just closed.
If problem persists, use Apple Hardware Test.
Answer from Ruskes on Stack ExchangeReddit
reddit.com › r/macbookpro › i am trying to uninstall rectangle but it’s not working/i don’t know how. idk what this means and why it renamed my disk
r/macbookpro on Reddit: I am trying to uninstall rectangle but it’s not working/I don’t know how. Idk what this means and why it renamed my disk
November 29, 2021 - Go to your applications folder and delete it. ... Open Activity Monitor (an app that comes with your Mac) and search Rectangle in the search bar. Select it and click the X button at the top of the window to close the task.
Iboostup
iboostup.com › how-to-uninstall › com.knollsoft.rectangle
How to uninstall Rectangle by Knollsoft from your Mac
- Click "Select Application", then select "Rectangle" from the list and click "Uninstall". - Enter your password if prompted, you may choose to skip this by clicking cancel — note that skipping this prompt will leave some files behind that ...
Home Screen white rectangle removal - Apple Community
A text box appeared on my MacBook Pro Home Page. I managed to cut the text to remove it but a small white rectangle remains and there does not appear any way of deleting it. More on discussions.apple.com
macos - Mysteriously, a rectangle has appeared in the middle of the screen. How to get rid of it? - Ask Different
I have a iMac (27-inch, Late 2009) running OS X Yosemite v 10.10.2. Mysteriously, a rectangle has appeared in the middle of the screen. Proportionately, it looks like a golden section. It floats ... More on apple.stackexchange.com
empty rectangle appeared on my desktop an… - Apple Community
It does show through any icons that happen to be on that part of the desktop. I don't think it's an LED issue--I'm assuming that would affect the screen view of documents as well. Any theories? Thanks for your help. 2880 10 · Black rectangle on desktop (macOS Catalina 10.15.5) Hello, I have ... More on discussions.apple.com
How to Remove Rectangles from Word Docs on MacBook Air
Every WORD DOC I open has a rectangle at the top of the page. I have tried searching for answers but I am in way over my head. ... How can I delete a section break in my Word for Mac document? Click on the "Formatting" button, so you can see where the section breaks are. More on discussions.apple.com
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GitHub
github.com › rxhanson › Rectangle
GitHub - rxhanson/Rectangle: Move and resize windows on macOS with keyboard shortcuts and snap areas · GitHub
Rectangle can be uninstalled by quitting the app and moving it to the trash. You can remove the Rectangle defaults from your machine with the following terminal command:
Starred by 28.6K users
Forked by 900 users
Languages Swift
Iboostup
iboostup.com › how-to-uninstall › com.amplesound.rectangles
How to uninstall Rectangles by Amplesound from your Mac
- Click "Select Application", then select "Rectangles" from the list and click "Uninstall". - Enter your password if prompted, you may choose to skip this by clicking cancel — note that skipping this prompt will leave some files behind that ...
YouTube
youtube.com › mac uninstall
How to Uninstall Rectangle for Mac Completely - YouTube
AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new featuresNFL Sunday Ticket · © 2024 Google LLC
Published August 9, 2023 Views 1K
Apple Community
discussions.apple.com › thread › 254591918
Home Screen white rectangle removal - Apple Community
A text box appeared on my MacBook Pro Home Page. I managed to cut the text to remove it but a small white rectangle remains and there does not appear any way of deleting it.
Top answer 1 of 4
2
Steps to evaluate where it comes from.
Switch User to see if it is user specific
Restore Disk permissions.
Start in Safe mode to eliminate 3d party applications
It looks like it is a left over from some app that did not close properly, next time if it happens remember what app you just closed.
If problem persists, use Apple Hardware Test.
2 of 4
6
A floating black rectangle appeared on my Mac screen after upgrade to High Sierra operating system. It is due to an Accessibility option and can be removed as follows:
System Preferences > Accessibility > Zoom > Options > Show preview rectangle when zoomed out
I do not know how it appeared, but I am glad that it is gone.
Medium
ryanhansondev.medium.com › to-disable-rectangle-or-rectangle-pro-for-a-specific-app-9efaab1e7e6a
To disable Rectangle or Rectangle Pro for a specific app:
May 21, 2022 - To disable Rectangle or Rectangle Pro for a specific app: Make that app frontmost Select “Ignore ” in the menu bar menu. Let me know if that’s not what you’re looking for.
UninstallMacApp
uninstallmacapp.com › rectangle-pro-3-0-16-removal.html
How to remove Rectangle Pro 3.0.16
However, instead of installing it by dragging its icon to the Application folder, uninstalling Rectangle Pro 3.0.16 may need you to do more than a simple drag-and-drop to the Trash. Download Mac App Remover · When installed, Rectangle Pro 3.0.16 creates files in several locations. Generally, its additional files, such as preference files and application support files, still remains on the hard drive after you delete Rectangle Pro 3.0.16 from the Application folder, in case that the next time you decide to reinstall it, the settings of this program still be kept.
Apple Community
discussions.apple.com › thread › 250852470
empty rectangle appeared on my desktop an… - Apple Community
November 13, 2019 - When I open apps, folders, etc., the rectangle does not affect them, however, it doesn't go away, and visible over whatever image I use for the desktop; it also covers icons of the folders and files in the desktop. I did a little research and it seems that the rectangle in my screen is different from other black rectangles that some people find in their Macs. I've tried to fix it, but nothing works.
Howtouninstallmacapp
howtouninstallmacapp.com › help › mac › remove-Rectangle-6980.html
How to Completely Delete Rectangle Mac Apps - HowtoUninstallMacApp
February 23, 2022 - ... To completely uninstall Rectangle, you'll need to delete the Rectangle app in the Applications folder, and then manually search and delete all the remnants of the Rectangle, most of which are located in the Library section or anywhere else, depending on how the app developer stores these files.
Rectangle
rectangleapp.com
Rectangle
Move and resize windows in macOS using keyboard shortcuts or snap areas. The official page for Rectangle.
Apple Community
discussions.apple.com › thread › 255422076
How to Remove Rectangles from Word Docs on MacBook Air
January 18, 2024 - Every WORD DOC I open has a rectangle at the top of the page. I have tried searching for answers but I am in way over my head. ... How can I delete a section break in my Word for Mac document? Click on the "Formatting" button, so you can see where the section breaks are.
Rectangle Mac OS App
rectanglemac.wordpress.com
Rectangle Mac OS App – Manage your Mac windows easily.
If you want to uninstall it, click “Eject” from the shortcut menu. Rectangle mac is an open-source window manager app that allows you to resize windows on your Mac using the screen edges.
Apple Community
discussions.apple.com › thread › 256064377
How do I remove black rectangle from my M… - Apple Community
May 24, 2025 - i went to eat cereal and came back to the black box on the bottom ive tried resetting and i do not think it is the heat it also does not change when i press down on it ... A section of my MacBook Air screen went black A section of my screen went black has anyone else experienced this?I tried reseting it in every way suggested but no luck.
Apple Community
discussions.apple.com › thread › 4682150
Preview: Disable Rectangular Selection - Apple Community
June 8, 2017 - Do a backup, preferably 2 backups on 2 separate drives. Quit the application. In Finder hold down the option/alt key while selecting the Go menu item. Select Library. Then go to Preferences/com.apple.Preview.plist.
Top answer 1 of 2
2
I had no problem installing both Rectangle and Rectangle Pro together via Homebrew, it installs two different applications into /Applications.
$ brew install --cask rectangle
==> Downloading https://formulae.brew.sh/api/cask.jws.json
==> Downloading https://github.com/rxhanson/Rectangle/releases/download/v0.82/Rectangle0.82.dmg
==> Installing Cask rectangle
==> Moving App 'Rectangle.app' to '/Applications/Rectangle.app'
rectangle was successfully installed!
$ brew install --cask rectangle-pro
==> Downloading https://rectangleapp.com/pro/downloads/Rectangle%20Pro%203.0.30.dmg
==> Installing Cask rectangle-pro
==> Moving App 'Rectangle Pro.app' to '/Applications/Rectangle Pro.app'
rectangle-pro was successfully installed!
$ shasum /Applications/Rectangle.app/Contents/MacOS/Rectangle
f62a0cc8f9dbcd406a8c3adec32898aed3a20dd7 /Applications/Rectangle.app/Contents/MacOS/Rectangle
$ shasum /Applications/Rectangle\ Pro.app/Contents/MacOS/Rectangle\ Pro
f47647bfb9356a0aed344779026d221e66c27637 /Applications/Rectangle Pro.app/Contents/MacOS/Rectangle Pro
Maybe you already installed Rectangle Pro directly from the website? You can run
brew install --adopt rectangle-pro
to make Homebrew aware of this.
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0
Want to improve this post? Provide detailed answers to this question, including citations and an explanation of why your answer is correct. Answers without enough detail may be edited or deleted.
You can try this command:
brew reinstall --cask rectangle-pro
(The --cask option directs brew to treat all named arguments as casks.)
The reinstall option uninstalls and then reinstalls a package, as explained in the Homebrew documentation:
Uninstall and then reinstall a formula or cask using the same options it was originally installed with, plus any appended options specific to a formula.
GitHub
github.com › rxhanson › Rectangle › issues › 1337
Rectangle stopped working after updating app yesterday · Issue #1337 · rxhanson/Rectangle
February 23, 2024 - I have had Rectangle for a few weeks and really like it. Been using it every day. I updated to .76 when prompted that a new version was available, and then the menu bar icon disappeared. Tried everything I could think of (restart Mac, shut down Mac, uninstall and reinstall Rect., downloaded ...
Author earthling97
Rectangle
rectangleapp.com › pro
Rectangle Pro
Not just a Rectangle upgrade. An upgrade over all other window managers. Throw a window to 16 window sizes & positions. Use it anywhere on a window, even if it's not in focus.
Reddit
reddit.com › r/mac › how do you use rectangle? from a new mac user
r/mac on Reddit: How do you use Rectangle? From a new mac user
September 7, 2022 -
Hi,
So I just bought my first Macbook.. I'm very excited but also super confused. I grew up on Windows and am not sure how to do a lot of things, one of them being "rectangle." I downloaded rectangle in hopes of snapping screens easily. I changed the shortcuts but whenever I use them, nothing happens. The app is open (I think) so I'm not sure what's going on. Can anyone help?
Edit: I got it to work! Thanks everyone. Apparently I just needed to restart my Mac. :)
Top answer 1 of 31
46
“Magnet” app works really well for this! in the apple app store for macbooks
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The issue probably isn’t rectangle itself, but rather enabling input monitoring or accessibility permissions for rectangle in macOS security/privacy settings. It also needs to be running, if it doesn’t run on startup you can go into rectangle settings and toggle that off and back on. Rectangle’s default setup works great for me, easy dragging and snapping behavior to left/right screen halves like Windows, plus more like top/bottom halves and quarters and thirds. The free version has everything you need.