Brotli
Google’s open-source entropy coder and dictionary system used in modern compression workflows.
libbrotli
Official C implementation of Brotli used for encoding, decoding, and shared compression routines.
Zopfli
Google’s DEFLATE optimization research influencing search heuristics and compression strategies.
ZopfliPNG
PNG recompression model from Zopfli providing inspiration for preprocessing and data reduction.
WOFF2
Google’s web font format where Brotli was originally developed for high-efficiency compression.
WebP
Google’s image format whose lossless transform concepts influenced later compression methods.
WebP2
Experimental Google image codec containing ideas that contributed to JPEG XL development.
Pik (Pre-JXL Project)
Google’s experimental codec that evolved directly into the JPEG XL image compression format.
Chrome Compression Research
General compression studies from Google Chrome shaping entropy tuning and optimization design.
Guetzli
Google’s psycho-visual JPEG encoder influencing human-vision optimization in modern codecs.
Skia / Color Pipeline
Chromium’s color and gamma pipeline informing color handling and fidelity tuning approaches.
Butteraugli
Google’s visual-difference metric guiding perceptual quality modeling in next-gen compression.
Google Research (Entropy / ANS)
Open studies on fast entropy coding and transforms supporting modern image codec evolution.
ImageMagick
Open-source image processing engine used for format detection, conversion, and pixel handling.
MagickCore
Core processing module handling pixel buffers, bit-depth conversion, and internal image operations.
libjpeg
JPEG decoder used by ImageMagick to read JPEG images into raw pixel data during conversions.
libpng
PNG codec used for writing high-quality PNG output during intermediate lossless conversions.
zlib
DEFLATE compression engine used by libpng to compress PNG data streams.
lcms2
Color-management library ensuring proper ICC profile handling and sRGB color conversion.