Pngyu

Pngyu is a Front-end GUI application for pngquant.

Download

Download the latest version from the Homepage.

Pre-built binaries are available for Windows and macOS.

Building from Source

Pngyu can be built on any platform that supports Qt and pngquant command-line tool.

Requirements

• Qt 6.x
• CMake 3.16 or later
• C++17 compatible compiler
• pngquant binary (included in pngquant_bin directory)

Build Instructions

Command Line

macOS:

./scripts/build_mac.sh

The built application will be available at build/Release/Pngyu.app.

To build Debug version:

BUILD_TYPE=Debug ./scripts/build_mac.sh

Windows:

.\scripts\build_win.ps1

To build Debug version:

.\scripts\build_win.ps1 -BuildType Debug

Qt Creator

1. Open CMakeLists.txt in Qt Creator
2. In the "Configure Project" screen, set the build directory to build/Release (for Release builds) or build/Debug (for Debug builds)
3. Build the project (Ctrl+B / Cmd+B)

The built application will be in the configured build directory.

Distribution

After building, use the deployment scripts to create distributable packages:

macOS:

./scripts/deploy_mac.sh

This will bundle Qt frameworks and create a DMG file.

Windows:

.\scripts\deploy_win.ps1

This will bundle Qt DLLs and create an archive.

The deployment scripts work with both command-line and Qt Creator builds, as long as the build directory is build/Release (configurable via BUILD_DIR environment variable).

Internationalization (i18n)

Pngyu supports multiple languages. For information about translations and contributing new languages, see translations/README.md.

License

Pngyu itself is distributed under the BSD license.

However, the pre-built binaries include pngquant, which is licensed under GPL v3 or later. See https://github.com/kornelski/pngquant for pngquant's license details.