Image Resizer is a macOS app for resizing images locally on your Mac. It supports resizing one image at a time or resizing multiple images in bulk.
Choose a mode
Use the selector at the top of the app window to switch between:
- Single: Resize one image and choose where to save it.
- Bulk: Resize multiple images into a destination folder.
Supported image formats
Image Resizer supports these formats:
- PNG
- JPG and JPEG
- TIFF and TIF
- GIF
- BMP
- JP2
How images are handled
Images are processed locally on your Mac. The app reads the original image, creates a resized copy, and saves the resized output to the location you choose.
Your original image files are not changed during normal use. The resized files are saved separately.
Basic workflow
- Choose Single or Bulk.
- Add one or more images by dragging them into the app or clicking the empty drop area.
- Enter the resize settings.
- Click the resize button.
- Choose where to save the resized image or images when prompted.