Granted, macOS carries many high quality fonts, but Apple modified them intentionally for incompatibility with other Operating system. However, these modifications, actually, violate OpenType spec. This project aims to recover the original faces of these fonts, thereby making fonts installed on other OS, e.g. Windows.

Do never touch typefaces themselves

Accept ttc font (TrueType Collection) without splitting

Support conversion from OpenType to TrueType

Support multiprocessing to leverage modern multi-core CPU

Support file wildcards

Python >= 3.6

fontTools >= 3.22.0

afdko or cu2qu if need TrueType conversion

pip install "fixMacFonts-*.whl"

Fixes some incompatible fonts from macOS

fixMacFonts font.ttc fonts/*.otf

Convert to TrueType (CPU intensive!)

fixMacFonts --otf2ttf font.ttc fonts/*.otf

"Need Internet connection for the first use in order to download data for speculation from language subtag to script subtag"

Fix 'cmap' table given here and there

Fix 'meta' table given here and there

Fix 'name' table given here and there

fix 'head' table given here and there

Apparently and ironically, Apple do not adhere to their own documents.