PYFTFEATFREEZE(1)

💖 PYFTFEATFREEZE 💖

okay bestie, welcome to pyftfeatfreeze, a lil User Command that is genuinely so iconic. it lives in section 1 of the manual, iykyk 🎀

---

✨ NAME ✨

pyftfeatfreeze — freezes OpenType features into a font 🧊🦋

---

🌸 DESCRIPTION 🌸

ok so the usage is literally this, no cap:

usage: pyftfeatfreeze [-h] [-f FEATURES] [-s SCRIPT] [-l LANG] [-z] [-S]
                      [-U USESUFFIX] [-R REPLACENAMES] [-i] [-r] [-n] [-v]
                      [-V] inpath [outpath]

With pyftfeatfreeze you can "freeze" some OpenType features into a font. the way that works is these features are then "on by default", even in apps that don't support OpenType features. periodt 💅

Internally, the tool remaps the "cmap" table of the font by applying the specified GSUB features. and lowkey important: only single and alternate substitutions are supported. that's the vibe check right there, bestie 😭

🫶 positional arguments 🫶

• inpath — input .otf or .ttf font file
• outpath — output .otf or .ttf font file (optional)

⭐ options ⭐

• -h, --help — show this help message and exit

🧚 options to control feature freezing 🧚

• -f, --features FEATURES — comma-separated list of OpenType feature tags, e.g. 'smcp,c2sc,onum'
• -s, --script SCRIPT — OpenType script tag, e.g. 'cyrl' (optional)
• -l, --lang LANG — OpenType language tag, e.g. 'SRB ' (optional)
• -z, --zapnames — zap glyphnames from the font ('post' table version 3, .ttf only) 💀

👑 options to control font renaming 👑

• -S, --suffix — add a suffix to the font family name (by default, the suffix will be constructed from the OpenType feature tags)
• -U, --usesuffix USESUFFIX — use a custom suffix when --suffix is enabled
• -R, --replacenames REPLACENAMES — search for strings in the font naming tables and replace them, format is 'search1/replace1,search2/replace2,...'
• -i, --info — update font version string

🔥 reporting options 🔥

• -r, --report — report languages, scripts and features in font
• -n, --names — output names of remapped glyphs during processing
• -v, --verbose — print additional information during processing
• -V, --version — show program's version number and exit

---

🌈 EXAMPLES 🌈

these ones, verbatim, slay:

pyftfeatfreeze -f 'c2sc,smcp' -S -U SC OpenSans.ttf OpenSansSC.ttf
pyftfeatfreeze -R 'Lato/Otal' Lato-Regular.ttf Otal-Regular.ttf

---

💖 reminder bestie: that 'SRB ' language tag has a trailing space in it, and 'search1/replace1,search2/replace2,...' really is slash-separated. copy them exactly, no cap 🙈

ok that's the whole page, you ate it up fr fr 🍓✨

signing off from the pyftfeatfreeze manpage, dated June 2025, part of the User Commands collection — main character energy only 💅🎀🦋