Short answer: PixPack reads PNG files and can export PNG. PNG is a lossless format, so compressing a PNG does not discard image detail, which usually means smaller savings than converting to a lossy format.
What is PNG?
PNG (Portable Network Graphics) is a lossless image format that supports an alpha channel for transparency. It is the standard choice for screenshots, icons, logos, charts and user-interface assets where sharp edges and transparency matter.
How PixPack handles PNG
PixPack reads PNG files and can export PNG as an output format. For substantial size reductions, converting PNG assets to WebP is usually more effective.
Characteristics
| PixPack support | Read and write |
|---|---|
| Compression type | Lossless |
| Transparency | Supported (alpha channel) |
| Best for | Screenshots, icons, UI assets, charts |
PNG files are often much larger than their JPEG or WebP equivalents because lossless encoding cannot discard detail. A folder of PNG screenshots is a typical case where conversion to WebP or JPEG produces a large saving.
PNG remains the right output format when transparency must be preserved and WebP is not accepted by the destination.
PNG questions
Can PixPack compress PNG files?
Yes. PNG is both an input and an output format in PixPack. Because PNG is lossless, converting to WebP usually produces a much larger saving than re-encoding as PNG.
Does PixPack preserve PNG transparency?
Yes. PNG output keeps the alpha channel, and WebP output also supports transparency.
How do I make a PNG smaller?
Converting the PNG to WebP is usually the most effective step, followed by reducing the maximum width and height. Re-encoding as PNG alone produces limited savings because PNG is lossless.
Should I keep PNG or convert to WebP?
Keep PNG if a downstream tool or destination requires a .png file or if you need a lossless master. Use WebP for delivery to modern browsers.
Product Facts
| Read formats | JPEG, PNG, HEIC, WebP, GIF, BMP, TIFF |
|---|---|
| Write formats | JPEG, PNG, HEIC, WebP, GIF |
| Metadata handled | EXIF, GPS, ICC profile |
| Presets | Web, Social, Email, Archive + custom |
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: