astroglyphs_2K

Curated OFL astrology glyph fonts — the "best of Noto" — plus per-glyph metrics and one-line embedding helpers, so any chart renderer gets deterministic astrology symbols instead of depending on whatever fonts the viewer has installed.

The good astrology fonts (Linotype Astrology Pi and friends) are proprietary and can't be bundled. astroglyphs_2K subsets the freely-licensed Noto family into compact web fonts you can inline directly into an SVG or HTML page, and tells you exactly how big each glyph is.

pip install astroglyphs_2K

import astroglyphs_2K as ag

svg = (ag.font_face_css()                      # <style> with the embedded @font-face rules
       + f'<text font-family={ag.SYM_FAMILY!r}>☉︎ ♄︎ ♏︎</text>'
       + f'<text font-family={ag.TXT_FAMILY!r}>22°℞ 36′</text>')

What's inside

All glyphs are subset from Noto and renamed per the OFL Reserved Font Name clause:

SYM_FAMILY and TXT_FAMILY are ready-made font-family stacks (embedded families first, system fallbacks after), so with font_face_css(embed=False) the page degrades gracefully to the viewer's own fonts.

API

• font_face_css(embed=True) → a <style> element inlining every font as a data: woff2 URI (self-contained; returns "" when embed=False).
• SYM_FAMILY, TXT_FAMILY → font-family stacks.
• glyph_metrics(ch) → (advance, ymin, ymax, xmin, xmax) in fractions of the em (ink bounding box from the outline) — for laying glyphs out without guessing.
• save_fonts(dest, fontset="astroset", formats=("ttf","otf","woff2")) → write the packaged installable font files (TrueType .ttf, OpenType-CFF .otf, web .woff2) into a directory; font_bytes(family, fontset, fmt) returns one file's raw bytes. Both astroset (the compact astrology subset) and fullset (the whole renamed Noto family) are available.
• GLYPH_METRICS, SYMBOL_FAMILY_NAMES, TEXT_FAMILY_NAME, FONT_SETS, FONT_FORMATS, OFL_ATTRIBUTION.

Licensing

Code: MIT. Bundled font data: SIL Open Font License 1.1 (the subset Noto glyphs) — see LICENSES/OFL.txt and astroglyphs_2K.OFL_ATTRIBUTION. The subsets are renamed (Astro*) so they are not distributed under a Noto Reserved Font Name.

Rebuilding the data

pip install -e ".[build]"      # fonttools + brotli
python tools/build.py          # regenerates src/astroglyphs_2K/_data.py from tools/fonts/*.ttf

Deterministic: the same vendored sources produce the same _data.py.

MIT © 2026 Elizabeth Huston, Ph.D. and Noah Christian, Ph.D. · bundled glyphs © the Noto Project (OFL 1.1)