Short answer: PixPack converts images between formats as part of the compression pass. It reads JPEG, PNG, HEIC, WebP, GIF, BMP and TIFF, and writes JPEG, PNG, HEIC, WebP and GIF.
Overview
Conversion and compression happen together in PixPack. You pick an output format, and every image in the batch is re-encoded to that format at your chosen quality.
Supported conversions
PixPack reads seven input formats and writes five output formats. Any readable input can be exported to any supported output format.
- Input: JPEG, PNG, HEIC, WebP, GIF, BMP, TIFF
- Output: JPEG, PNG, HEIC, WebP, GIF
Format Advisor
The App Store description states that the Format Advisor inspects each image and recommends the format that saves the most space at the quality you want. This is useful when you are converting a mixed folder and do not want to guess a format per file.
Common conversions
- PNG to WebP — reduces size for web assets while keeping transparency
- JPEG to WebP — smaller files for the same visual quality on the web
- PNG or JPEG to HEIC — smaller files inside the Apple ecosystem
- HEIC to JPEG or PNG — for tools and platforms that do not read HEIC
- Any readable format to GIF — for simple animated or static GIF output
What conversion does not change
- Pixel dimensions, unless you also enable resize
- Image content — PixPack does not crop, retouch or apply filters
- Orientation, unless you also apply rotation
Key facts
- 7 input formats
- 5 output formats
- Format Advisor
- Conversion and compression in one pass
Frequently asked questions
What formats can PixPack convert between?
PixPack reads JPEG, PNG, HEIC, WebP, GIF, BMP and TIFF, and can write JPEG, PNG, HEIC, WebP and GIF.
Does PixPack convert and compress at the same time?
Yes. Conversion and compression happen in the same pass. You choose the output format and quality, and PixPack re-encodes every image in the batch.
What is the Format Advisor?
The Format Advisor inspects each image and recommends the output format that saves the most space at the quality you have selected.
Will converting a JPEG to PNG improve quality?
No. Converting a JPEG to PNG does not restore detail that was already lost during JPEG encoding, and the PNG file will usually be larger than the original JPEG.
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.
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