這裏是切分字體的辦法:
https://roger.pub/blog/reduce-ttf-font-file-size-using-python/
mkdir font-reduce && cd font-reduce
# Create python environment, this can be skipped.
python3 -m venv env
. env/bin/activate
# Install fonttools, I'm using 4.32.0
pip install fonttools
pyftsubset Input.ttf --output-file ...