wip-reference/site/public/fonts

Self-hosted fonts

These are unmodified binaries from official upstream sources. Only the faces used by the site are retained: Lyth Mono regular/bold, EB Garamond regular/bold and their italics, plus each family's regular TTF for build-time outline extraction with opentype.js. Browsers use WOFF2, not the TTFs. No Nerd, Term, Square, Round, variable, light, or medium faces are included.

Lyth Mono

• Repository: https://github.com/why-trv/LythMono
• Selected non-prerelease release: v0.10.0, published 2026-02-06.
• Pinned tag commit: 71d1cf4f325663705ab41ee1908427ea435b2e5d.
• Pinned Iosevka source submodule: a90e82cf6f37cc9b82e47151024c86cfe0693874.
• Official release archive: https://github.com/why-trv/LythMono/releases/download/v0.10.0/LythMono.zip
• Archive SHA-256, checked against the GitHub release asset digest: 06b8c05671572e8cba61bf494404d3b973df348c607cd33f3153a374247d6607.
• Extracted only LythMono/WOFF2/LythMono-Regular.woff2, LythMono/WOFF2/LythMono-Bold.woff2, and LythMono/TTF/LythMono-Regular.ttf (hinted versions). The archive is not retained.
• License: LythMono-LICENSE.md, copied from LICENSE.md at the pinned commit; SIL Open Font License 1.1, including upstream copyright notices.
• Internal family: Lyth Mono. Regular full name: Lyth Mono; PostScript name: Lyth-Mono. Bold PostScript name: Lyth-Mono-Bold. Regular TTF version: Version 0.10.0; ttfautohint (v1.8.4).

Regular TTF metrics (font units): units/em 1000; hhea ascender 925, descender -195, line gap 50; OS/2 typo ascender 925, descender -245, line gap 0; Windows ascent/descent 925/245; cap height 720; x-height 540. ASCII 0, W, i, p, and the four box glyphs below all advance 604 units (0.604em; 8.456px at 14px). This is not a 0.6em font. Glyph count: 12174.

Character	Unicode	Glyph ID	Ink bounds (xMin, yMin, xMax, yMax)
│	U+2502	7535	(264, -245, 340, 925)
├	U+251C	7561	(264, -245, 604, 925)
└	U+2514	7553	(264, 306, 604, 925)
─	U+2500	7533	(0, 306, 604, 374)

These are real, nonempty outlines verified with opentype.js, not fallback characters. The horizontal stroke's center is y=340, and vertical strokes reach the font's 925/-245 line extents. Explicit line-height and vertical alignment matter when joining animated strokes to text.

EB Garamond

• Official source: https://github.com/octaviopardo/EBGaramond12
• Pinned commit: 106a4a6d377987459ae5e68673a4570f13b957fb.
• This is the upstream revision recorded by Google Fonts in ofl/ebgaramond/METADATA.pb at distribution commit f8c1d3d6cc75e30d77130bdcbfbff27e3b6233fe.
• No published GitHub release is available at the source repository. Files were downloaded directly from that pinned source commit, not a third-party font CDN: https://raw.githubusercontent.com/octaviopardo/EBGaramond12/106a4a6d377987459ae5e68673a4570f13b957fb/.
• Source paths: fonts/webfonts/EBGaramond-{Regular,Bold,Italic,BoldItalic}.woff2 and fonts/ttf/EBGaramond-Regular.ttf.
• License: EBGaramond-OFL.txt, copied from OFL.txt at the pinned commit; SIL Open Font License 1.1, including upstream copyright notices.
• Internal family: EB Garamond. Regular full name: EB Garamond Regular; PostScript name: EBGaramond-Regular. Other included PostScript names: EBGaramond-Bold, EBGaramond-Italic, EBGaramond-BoldItalic.
• The static regular TTF reports Version 1.002; ttfautohint (v1.8.4.16-eb64). Google Fonts' newer variable version is not included; the static faces above are deliberately used as shipped by upstream.

Regular TTF metrics (font units): units/em 1000; hhea and OS/2 typo ascender 1007, descender -298, line gap 0; Windows ascent/descent 1047/390; cap height 650; x-height 400. Advances: 0 480, W 916, i 245, p 519. Glyph count: 3247. It does not contain the four box-drawing characters above.

Japanese / CJK fallback

Neither regular TTF maps any codepoints in Hiragana (U+3040–309F), Katakana (U+30A0–30FF), CJK Unified Ideographs (U+4E00–9FFF), or Extension A (U+3400–4DBF). あ, ア, 漢, 日, and 本 all map to glyph 0 in both. Do not use their .notdef outlines for Japanese glyph extraction.

The proportional CSS stack uses installed Noto Serif JP, Hiragino Mincho ProN, Yu Mincho / YuMincho, then generic serif. The mono stack retains system monospace choices and installed Noto Sans Mono CJK JP. These are fallback names only: no additional CJK font is downloaded or requested from an external provider. Japanese metrics depend on the user's installed font.

Build-time outlines

src/lib/landing-glyphs.mjs uses opentype.js@2.0.0 during Astro rendering. It reads public/fonts/LythMono-Regular.ttf from the site working directory, extracts box glyphs directly through cmap (no programming ligatures or GSUB shaping), and normalizes the vertical cell to the 24px tree row. Direct glyph lookup also avoids Lyth Mono's contextual GSUB lookups that OpenType.js 2.0.0 does not support. The 0.604em advance and connection centers are retained; tree stroke edges are expanded symmetrically by 25% for legibility (the resting vertical stem is 1.33px). Cell boundaries stay fixed so neighboring glyphs join. The distributed font binaries and ordinary text weights are unchanged.

The resulting SVG paths are emitted into static HTML; neither the parser nor the TTF is fetched by the browser. Anime.js controls the shared tree transform and reveals the persistent trunk through a mask; there is no switch back to HTML box-drawing text on completion. Labels and normal content remain text.

Integrity

SHA256SUMS records every font and upstream license in this directory. Verify from this directory with sha256sum --check SHA256SUMS. Individual hashes pin the exact binaries even if upstream tags or release assets change.