This is a README for the font compression reference code. There are several compression related modules in this repository.
brotli/ contains reference code for the Brotli byte-level compression algorithm. Note that it is licensed under an Apache 2 license.
src/ contains the C++ code for compressing and decompressing fonts.
This document documents how to run the compression reference code. At this writing, the code, while it is intended to produce a bytestream that can be reconstructed into a working font, the reference decompression code is not done, and the exact format of that bytestream is subject to change.
On a standard Unix-style environment:
git clone https://github.com/google/woff2.git cd woff2 git submodule init git submodule update make clean all
woff2_compress myfont.ttf woff2_decompress myfont.woff2
Also please refer to documents (currently Google Docs):
WOFF Ultra Condensed file format: proposals and discussion of wire format issues (PDF is in docs/ directory)
WIFF Ultra Condensed: more discussion of results and compression techniques. This tool was used to prepare the data in that document.