TrimrPixImageOptim Alternative for Mac
TrimrPix is a modern ImageOptim alternative for Mac. It optimizes JPEG, PNG, GIF, AVIF and HEIC with drag-and-drop batch compression, Watch Folder automation, and adjustable quality, all fully offline for $1.99 one-time.
Why look for an ImageOptim alternative?
ImageOptim is a well-known free image optimizer for Mac. It works well for basic JPEG and PNG compression. However, it does not handle the newer formats, and it has no folder automation. Those are the two gaps TrimrPix fills. It is worth being precise about what is not a gap: ImageOptim does have quality control. Its Preferences carry a Maximum quality setting for JPEG and a Lossy minification option that covers JPEG, PNG, SVG and animated GIF.
TrimrPix is built as a modern native Mac app with these features included.
TrimrPix vs ImageOptim
| Feature | TrimrPix | ImageOptim |
|---|---|---|
| JPEG | Yes | Yes |
| PNG | Yes | Yes |
| GIF | Yes | Yes |
| SVG | No | Yes |
| WebP | Opens it, cannot re-save it | No |
| AVIF | Yes | No |
| HEIC | Yes | No |
| Scanned PDF | Yes | No |
| Adjustable quality | Yes, a slider per run | Yes, in Preferences |
| Batch processing | Yes | Yes |
| Watch Folder | Yes | No |
| Runs on | macOS 15.2 or later | macOS 11 or later |
| Distribution | Mac App Store | Direct download |
| Price | $1.99 one-time | Free, open source |
Format support
TrimrPix handles JPEG, PNG, GIF, AVIF and HEIC in one interface, plus scanned PDFs. It opens WebP but cannot re-save it, because macOS has no WebP encoder, so neither app in this comparison can make a WebP smaller. For a deeper look at when to use each format, see the Image Formats Guide.
Batch compression and Watch Folder
Both TrimrPix and ImageOptim support batch processing, so you can drag in multiple files and optimize them all at once. Where TrimrPix goes further is Watch Folder: set any folder on your Mac to be monitored, and new images added to it are optimized automatically.
This is ideal for screenshot folders, download directories, or export folders from design tools. Learn more in the Batch Image Compression guide.
Pricing
ImageOptim is free and open-source. TrimrPix costs $1.99 one-time on the Mac App Store, with no subscription and no in-app purchases. The paid model supports ongoing development and new features.
Where ImageOptim is the better choice
Plenty of the time, and it would be dishonest to write a comparison that never says so.
- It costs nothing and it is open source. If JPEG, PNG and GIF are all you touch, that is the whole job done for free.
- It runs on macOS 11 and later. TrimrPix needs macOS 15.2, so on an older Mac ImageOptim is not merely the better choice, it is the only one of the two that will start.
- It optimizes SVG, which TrimrPix does not do at all.
- It can be driven from the command line or from Sketch, so it drops into a build step. TrimrPix is a window you drag files into.
- Its compression is well proven. It bundles MozJPEG, pngquant, Zopfli and others, which are the same tools much of the web tooling world relies on.
Who should switch?
Consider TrimrPix if you need:
- AVIF or HEIC support: modern formats that ImageOptim does not handle
- Watch Folder automation: auto-optimize without manual drag-and-drop
- Quality control: a slider on the main window, from 10% to 100%, rather than a preference you set once
- App Store updates: automatic updates through the Mac App Store