Short answer: PixPack shows a before-and-after preview so you can inspect the compression result before writing anything to disk. It supports side-by-side and slider comparison modes, with zoom and pan.
Overview
Preview is the safety net in PixPack: it lets you confirm the result rather than trusting a setting. The App Store description describes previews and statistics as a way to confirm results before anything is written to disk.
Compare modes
- Slider — drag a divider across the image to compare original and compressed in place
- Side by side — view the original and the compressed result next to each other
- Zoom and pan — magnify a region and move around it to inspect fine detail
Live statistics
Alongside the preview, PixPack reports the original size, the compressed size, the space saved and the savings ratio. The App Store screenshots show these values updating with the settings.
Preview performance
The 1.4.3 release notes state that previews became faster and smoother through smart result caching and task cancellation, which keeps the compare view in sync with every slider movement. Panning zoomed-in previews was also added in that release.
Why preview matters for batch work
In a batch you apply one setting to many images, but the images may differ in detail and complexity. Previewing representative files first reduces the chance of exporting a whole batch at a quality level that looks wrong.
Key facts
- Slider comparison mode
- Side-by-side comparison mode
- Zoom and pan
- Live size and savings statistics
- Preview caching and cancellation (1.4.3)
Frequently asked questions
Can I preview the result before exporting in PixPack?
Yes. PixPack shows a before-and-after preview with size and savings statistics, so you can confirm the result before anything is written to disk.
What comparison modes does PixPack offer?
PixPack supports slider comparison, where you drag a divider across the image, and side-by-side comparison. Zoom and pan were added in version 1.4.3.
Does the preview slow down large batches?
Version 1.4.3 added smart result caching and task cancellation to keep previews fast and in sync with settings changes.
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.
Last verified: