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SPECIFICTION
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PNGOUT

advsys.net

Free plan WindowsmacOSLinux
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Spec score 8.3 #28 of 85 in Image Compression Software

Spec sheet

Purpose
PNGOUT losslessly optimizes PNG files created by other programs.Read 11 Oct 2026 · advsys.net
Platforms
The maker lists Windows for the command-line executable and links to Linux and Mac OS X ports hosted by Jonathon Fowler.Read 11 Oct 2026 · advsys.net
Free plan
YesRead 24 Sep 2026 · advsys.net
Integrations
The maker lists PNGGauntlet as a .NET-based Windows wrapper for PNGOUT; the tutorial also documents a Windows clipboard input option.Read 11 Oct 2026 · advsys.net
License
The command-line versions and Mac and Linux ports are free to use; bundling the executable in a commercial product requires contacting the maker’s business partner.Read 11 Oct 2026 · advsys.net
Batch processing
NoRead 24 Sep 2026 · advsys.net
Command line
The command-line tool runs from Windows Run or a command prompt, and users must choose compression options themselves because it does not automate trials.Read 11 Oct 2026 · advsys.net
Compression
The maker says PNGOUT can often beat other programs by 5–10% with the right options.Read 11 Oct 2026 · advsys.net
Compression method
PNGOUT uses the maker’s deflate compressor, also used in KZIP.Read 11 Oct 2026 · advsys.net
Compression modes
losslessRead 24 Sep 2026 · advsys.net
Input formats
The tutorial lists PNG, GIF, uncompressed BMP, JPG, TGA, and 8- or 24-bit PCX as supported inputs.Read 11 Oct 2026 · advsys.net
Limits
The command-line version does not support 16-bit PNG color depths or batch processing, and outputs interlaced images as non-interlaced.Read 11 Oct 2026 · advsys.net
Metadata controls
YesRead 24 Sep 2026 · advsys.net
PNGOUTWin
The maker describes PNGOUTWin as a Windows GUI version with batch processing and multi-core support.Read 11 Oct 2026 · advsys.net
PNGOUTWin conversion
PNGOUTWin can convert and compress images to PNG from TIFF, GIF, BMP, and other formats, or optimize existing PNG files.Read 11 Oct 2026 · ardfry.com
PNGOUTWin trial
The maker offers a free 30-day PNGOUTWin trial and downloadable 32-bit and 64-bit application ZIPs.Read 11 Oct 2026 · ardfry.com
Refund terms
PNGOUTWin’s purchase page offers a 30-day satisfaction guarantee subject to emailing the order number and confirming the software was uninstalled.Read 11 Oct 2026 · ardfry.com
Support and upgrades
PNGOUTWin purchases include free support and minor version upgrades, with discounts on major upgrades.Read 11 Oct 2026 · ardfry.com
Supported formats
PNG,GIF,BMP,JPG,TGA,PCXRead 24 Sep 2026 · advsys.net

Plans and prices

PNGOUT command-line Price not published Lossless PNG optimization · Command-line utility · Free for use Read 24 Sep 2026 · advsys.net
Command-line PNGOUT Free Free command-line use; commercial bundling requires contacting the maker’s business partner Read 11 Oct 2026 · advsys.net
PNGOUTWin Personal Edition $14.95, paid once $14.95 for a limited time; page also lists $19.95 Single-user license for non-corporate, non-government, non-business use Read 11 Oct 2026 · ardfry.com
PNGOUTWin Corporate Edition $29.95, paid once $29.95 for a limited time; page also lists $50.00 Single-user license for corporate, government, or business use Read 11 Oct 2026 · ardfry.com

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