Comparison information verified:
Comparison scope
The two apps approach the problem from different directions: ImageOptim optimises existing files in place with minimal configuration, while PixPack gives you explicit control over output format, quality and dimensions across a batch.
This page compares ImageOptim (macOS, Open source (GPL)) with PixPack (macOS, Mac App Store). Capabilities are marked Yes only when they are documented by the product's own official source. Capabilities that could not be confirmed are marked Not verified rather than No.
At a glance
PixPack
- Platform
- macOS 14.0 or later
- Price
- $9.99 one-time (US App Store)
- Distribution
- Mac App Store
- Output formats
- JPEG, PNG, HEIC, WebP, GIF
- Preview
- Slider and side-by-side compare
ImageOptim
- Platform
- macOS
- Price
- Free
- Distribution
- Direct download, open source
- Approach
- Lossless optimisation of existing files
Capability comparison
| Capability | PixPack | ImageOptim |
|---|---|---|
| Native macOS app | Yes | Yes |
| Batch processing | Yes | Yes |
| Folder processing | Yes | Yes |
| JPEG output | Yes | Yes |
| PNG output | Yes | Yes |
| GIF support | Yes | Yes |
| HEIC output | Yes | Not verified |
| WebP output | Yes | Not verified |
| Resize / maximum dimensions | Yes | No |
| Image rotation | Yes | No |
| Quality control | Yes | Not verified |
| Before / after visual preview | Yes | No |
| Custom presets | Yes | No |
| Clipboard paste | Yes | No |
| EXIF / GPS control | Yes | Not verified |
| Filename templates | Yes | No |
| Works offline without upload | Yes | Yes |
| No account required | Yes | Yes |
| One-time purchase | Yes | Yes |
| Open source | No | Yes |
ImageOptim is a long-running project whose feature set changes over time. Capabilities marked "Not verified" were not confirmed from its official documentation at the time of writing.
When to choose PixPack
- You want to convert format as well as compress — for example PNG to WebP
- You need to resize images to a maximum width and height
- You want to compare the compressed result against the original before exporting
- You prefer buying through the Mac App Store with a one-time purchase
- You need HEIC, WebP or GIF output alongside JPEG and PNG
When to choose ImageOptim
- You want a free and open-source tool
- You prefer lossless optimisation of files already in the format you want
- You do not need format conversion, resizing or a visual preview
- You want to inspect or modify the source code
Product Facts
| Product name | PixPack – Image Compressor Pro |
|---|---|
| Platform | macOS |
| Minimum system | macOS 14.0 or later |
| Architecture | Apple Silicon + Intel |
| Current version | 1.4.3 |
| Price | $9.99 (US App Store) |
| Processing | Local on your Mac |
| Privacy label | Data Not Collected |
Source: Apple App Store · Last verified:
Sources
- PixPack on the Mac App Store Official App Store product page for PixPack – Image Compressor Pro, including the product description, feature list, supported formats, system requirements, version history and price.
- Apple iTunes Lookup API record for PixPack Structured App Store metadata record used to verify version number, minimum macOS version, price, file size, release dates, age rating and the number of listed localizations.
- ImageOptim Official Website Official ImageOptim website, describing its lossless and lossy image optimization approach for macOS.
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