About OptiPNG
A PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections.
OptiPNG 7.9.1
A PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG
- By Cosmin Truta
- Open Source
- Portable
- Updated May 20, 2025
Technical details
| Publisher | Cosmin Truta |
|---|---|
| Version | 7.9.1 |
| Release date | 2025-05-20 |
| License | Zlib |
| Installer type | zip |
| Architecture | x86, x64 |
| Package ID | OptiPNG.OptiPNG |
Install OptiPNG from the command line
- Install with Windows Package Manager
winget install --id=OptiPNG.OptiPNG -e- Update to the latest version
winget upgrade --id=OptiPNG.OptiPNG -e- Uninstall
winget uninstall --id=OptiPNG.OptiPNG -e
File types supported by OptiPNG
OptiPNG can open or be associated with 5 file types:
OptiPNG version history
0.7.8 Nov 3, 2023
Frequently asked questions
Is OptiPNG free?
Yes. OptiPNG is free and open-source software released under the Zlib license.
What is the latest version of OptiPNG?
The latest version is 7.9.1, released on May 20, 2025.
Is it safe to download OptiPNG?
The download button links to the official installer published on sourceforge.net, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with cdc632c21e11b2e0ba6f87a0df632f810827267f263b655002a849d3f87b06b2.
Which Windows versions does OptiPNG support?
OptiPNG runs on Windows and is available for 32-bit (x86), 64-bit (x64) systems.
How do I uninstall OptiPNG?
Open Settings › Apps › Installed apps, find OptiPNG and select Uninstall. From the command line, run winget uninstall --id=OptiPNG.OptiPNG -e.
Is there a portable version of OptiPNG?
Yes. OptiPNG is available as a portable ZIP archive (download, 64-bit (x64)) that runs without installation. Copy it to any folder or USB drive and run it from there.
What file types can OptiPNG open?
OptiPNG supports 5 file types, including .bmp, .gif, .png, .pnm, .tiff.
Alternatives to OptiPNG
Other File Compression programs for Windows from different developers.
FileOptimizer 17.1.0.0
An advanced file optimizer featuring a lossless (no quality loss) file size reduction
CaesiumPH 0.9.5
Lossless JPEG compression for photographers and webmasters.
7-Zip 26.04
7-Zip is a powerful alternative to Winrar
WinRAR 64-bit 7.01
Trusted compression for personal and professional use
NanaZip 7.0.1882.0
NanaZip: A Reliable Windows File Manager
PeaZip 11.3.0
A free file archiver utility and rar extractor for Windows and Linux, work with 200+ archive types and variants, handle spanned archives and support multiple archive encryption standards.