A lightweight macOS utility for resizing any application window to a specific resolution. Works with all apps — including Chromium-based browsers (Arc, Chrome, Edge, Brave) that ignore standard macOS resize commands.
© Rob Shelnutt — github.com/rshelnutt
- Resize any running application's window to a precise resolution
- Preset resolutions: QHD, Full HD, MacBook Default, and more
- Custom resolution input with persistent memory between sessions
- Centers the window on screen after resizing
- Handles Chromium-based apps that block standard resize methods
- CLI mode for scripting and automation
- macOS 12.0 or later
- Download
Window Resizer.appfrom Releases - Move it to your Applications folder (or wherever you prefer)
- Double-click to launch
On first launch, macOS will prompt you to grant Accessibility permission in System Settings → Privacy & Security → Accessibility. The app needs this to move and resize windows.
Open Window Resizer.app, select an application, pick a resolution (or enter a custom one), and click Resize.
# Resize Arc to a specific resolution
~/Applications/Window\ Resizer.app/Contents/MacOS/WindowResizer "Arc" 1920x1080
# Resize Arc using the default resolution
~/Applications/Window\ Resizer.app/Contents/MacOS/WindowResizer "Arc"| Resolution | Name |
|---|---|
| 2560 × 1440 | QHD |
| 2360 × 1640 | MacBook Default |
| 1920 × 1080 | Full HD |
| 1680 × 1050 | WSXGA+ |
| 1440 × 900 | WXGA+ |
| 1280 × 720 | HD |
| 1024 × 768 | XGA |
| 800 × 600 | SVGA |
Select Custom... from the dropdown to enter any width and height. Custom values are remembered between sessions.
App focuses but doesn't resize: Make sure Accessibility permission is granted to Window Resizer.app in System Settings → Privacy & Security → Accessibility. Remove and re-add it if needed.
Ban/prohibitory symbol on the app icon: Clear the icon cache:
sudo rm -rfv /Library/Caches/com.apple.iconservices.store
killall Dock
killall FinderWindow resizes to a different height than requested: Your screen's usable vertical space (minus menu bar and Dock) is smaller than the requested height. macOS caps the window to fit.
MIT