Window Resizer
Perfect pixel sizes. Every time.
Window Resizer is a lightweight macOS utility that lets you instantly resize the currently active window to an exact pixel dimension. Whether you’re preparing screenshots for the App Store, recording demos, or testing responsive layouts, Window Resizer removes the guesswork and makes precision effortless.
Download Window Resizer
Why Window Resizer?
When you need screenshots or screen recordings at specific resolutions, manually resizing windows is slow, inconsistent, and frustrating. Window Resizer gives you repeatable, pixel-perfect results in a single click.
Key Features
- • Resize the active window to an exact width and height
- • One-click presets for common resolutions (Full HD, HD, QHD)
- • Custom pixel dimensions for complete control
- • Works with any app window
- • Fast, unobtrusive, and designed for daily use
- • Native macOS look and feel
Ideal For
- • App Store screenshot preparation
- • Screen recordings and tutorials
- • Developers testing layouts at specific sizes
- • Designers capturing consistent mockups
- • Content creators who need precise output dimensions
How It Works
- 1. Select a preset or enter custom pixel dimensions
- 2. Click Resize Active Window
- 3. Your currently active window is instantly resized
Window Resizer requires Accessibility permission to resize windows. This access is used only to perform the resize action and nothing else.
Built for macOS
Window Resizer is designed specifically for macOS with a focus on speed, clarity, and simplicity—so it stays out of your way and just gets the job done.