iResize Pro
iResize Pro is a macOS image utility for batch resizing folders of pictures while preserving the original aspect ratio.
What is iResize Pro?
iResize Pro is a native macOS utility for resizing large groups of images quickly and consistently. It is designed for people who need to prepare photos or graphics for email, websites, listings, documents, or shared folders without editing each file one by one. You set a target width or height in pixels, and the app scales every image proportionally so the original aspect ratio is maintained. It supports common input formats including JPG, PNG, GIF, TIFF, HEIC, BMP, and WebP, with output to JPEG, PNG, TIFF, and GIF. The app also includes real-time previewing, adjustable JPEG quality, batch renaming, and an optional coloured border for exported images. iResize Pro is published by Daniele J. Krähenbühl and runs on macOS as a lightweight desktop app for practical image-preparation workflows.
Key features
- Resize entire folders of images in one batch
- Scale by width or height while keeping the original aspect ratio
- Export resized images as JPEG, PNG, TIFF, or GIF
- Preview target dimensions and estimated output size before processing
- Adjust JPEG compression quality for output images
- Rename exported files in sequence during batch processing
- Add an optional coloured border to resized images
- Warn when source images are smaller than the target size
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Safety overview
Status: Safe
iResize Pro is a straightforward local image-resizing app for macOS. Access to your files is expected for choosing source images and saving resized copies, and its non-destructive workflow means the original images are left unchanged. As with any batch image tool, it is wise to test settings on a small set of photos first so the output size, format, and compression match what you want before processing a larger folder.
Recommendation: Keep iResize Pro if you regularly prepare images in bulk for sharing, publishing, or archiving. If you no longer use it, removing the app should only affect this resizing workflow and not your original image files.
Common paths
/Applications/iResize Pro.app
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