YAPF 1.0.0

YAPF 1.0.0

The first stable version of YAPF: a lossless image format built for single-core decode speed.

• 5–12× faster decoding than PNG (stb_image) on one core; a 4K image decodes in about 6–7 ms.
• Smaller than PNG on UI, icons and screenshots; 20–50 % larger on photos and textures.
• SIMD on by default (SSSE3 with runtime detection on x86, NEON on ARM64), mipmaps, GPU format hints, random access to 64×64 tiles.
• Two C99 files, no dependencies — plus a command-line tool, bindings for 10 languages and plugins.

Downloads

File	What it is
yapf-windows-x64.zip, yapf-windows-arm64.zip	yapf.exe command-line tool, yapf.dll, libyapf.a, yapf.h
yapf-linux-x64.zip, yapf-linux-arm64.zip	yapf tool, libyapf.so, libyapf.a, yapf.h
yapf-macos-x64.zip, yapf-macos-arm64.zip	yapf tool, libyapf.dylib, libyapf.a, yapf.h
yapf_image-blender.zip	Blender 4.2+ extension (Preferences → Get Extensions → Install from Disk)
yapf-preview.vsix	VS Code preview (Extensions: Install from VSIX…)
yapf-figma.zip	Figma plugin (Plugins → Development → Import plugin from manifest…)
yapf-photoshop.zip	Photoshop scripts (copy into Presets/Scripts together with the yapf tool)
yapf-gimp-source.zip	GIMP 3 plugin source (gimptool --install yapf-gimp.c)
yapf-kde-source.zip	Dolphin thumbnail plugin source (CMake, KF6)

Try it: yapf compare your-image.png shows size and decode speed against PNG.

Tested

• Linux x64, Windows x64 (run under Wine) and Linux ARM64 (run under qemu): full test suite, with and without SIMD, plus sanitizers and fuzzing.
• GIMP 3.0.8 and Blender 5.1: tested in the real applications.
• Language bindings (C, C++, Python, C#, Rust, Go, Java, Zig, Lua, JavaScript/TypeScript): every example runs.

Not yet tested

• macOS builds are cross-compiled and have not been run on a Mac; Windows ARM64 is built only.
• Photoshop scripts are only syntax-checked; VS Code and Figma plugins were tested in a browser engine but not inside the applications; the KDE thumbnailer was tested through KDE's plugin loader, not in a running Dolphin.

Reports from anyone trying these are very welcome.