iResize4
iResize4 is a macOS image resizing app for quickly batch-processing folders of pictures while keeping their original aspect ratio.
What is iResize4?
iResize4 is a Mac image utility for resizing large numbers of pictures in one pass. It is designed for people who need smaller copies of photos or graphics for email, websites, documents, or storage without manually editing each file one by one. The app focuses on batch resizing by width or height while keeping proportions correct, so images stay in the right shape after processing. It supports common workflows such as converting output to formats like JPEG, PNG, TIFF, or GIF, previewing the target size before export, and renaming files during batch jobs. iResize is published by Daniele as a native macOS app and is intended for straightforward, local image-processing work rather than full photo editing. Users who regularly prepare folders of images for sharing or publishing will find it most useful.
Key features
- Resize entire folders of images in a single batch
- Scale images by width or height while preserving aspect ratio
- Export resized copies in JPEG, PNG, TIFF, and GIF formats
- Preview target dimensions before processing
- Compare JPEG quality settings before saving
- Rename output files in sequence during batch jobs
- Add an optional colored border to resized images
- Handle common image formats including JPG, PNG, GIF, TIFF, HEIC, BMP, and WebP
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Safety overview
Status: Mostly safe
This is a standard local image utility for macOS. It works with pictures you choose and its normal use is consistent with resizing and exporting image files. As with any batch-processing app, check the destination folder and output settings before running large jobs so you do not overwrite or confuse copies of important images. Keeping original files backed up is a sensible precaution when processing many photos at once.
Recommendation: Keep iResize4 if you use it to prepare batches of images for sharing, publishing, or storage. If you no longer resize images on your Mac, you can remove it with little impact beyond losing its batch image-processing tools and any app-specific settings.
Common paths
/Applications/iResize4.app
Preference paths
~/Library/Preferences/com.daniele.iresize4.plist
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