Available fonts

The render engine has a curated set of font families pre-installed, so your PDFs render deterministically with zero network fetches. Reference any of them by name in your CSS with a generic fallback:

body { font-family: 'Inter', system-ui, sans-serif; }

Family	Recommended stack	Notes
`Inter`	`'Inter', system-ui, sans-serif`	Clean UI sans; a great default.
`Source Serif 4`	`'Source Serif 4', Georgia, serif`	Editorial text serif; proposals, letters.
`IBM Plex Serif`	`'IBM Plex Serif', Georgia, serif`	Rational serif; formal and legal documents.
`IBM Plex Sans`	`'IBM Plex Sans', system-ui, sans-serif`	Engineered sans; pairs with the other Plex families.
`IBM Plex Sans Condensed`	`'IBM Plex Sans Condensed', sans-serif`	Dense operational documents: labels, manifests.
`IBM Plex Mono`	`'IBM Plex Mono', monospace`	Identifiers, references, tabular codes.
`EB Garamond`	`'EB Garamond', Georgia, serif`	Oldstyle serif; certificates, academic documents.
`Roboto`	`'Roboto', system-ui, sans-serif`	Neutral, highly legible.
`Open Sans`	`'Open Sans', system-ui, sans-serif`	Friendly, wide language coverage.
`Lato`	`'Lato', system-ui, sans-serif`	Warm, humanist sans.
`Noto Sans`	`'Noto Sans', sans-serif`	Broad Unicode + CJK coverage.
`DejaVu Sans`	`'DejaVu Sans', sans-serif`	Robust fallback, wide glyph set.

Custom fonts

External font sources are not reliable: Google Fonts <link> tags are always stripped at render time, and an @font-face rule pointing at an external url() is either dropped or rewritten through our resource proxy, never fetched directly. For deterministic output, use a pre-installed family above or embed the font as a data: URI inside an @font-face rule:

@font-face {
  font-family: 'MyBrand';
  src: url(data:font/woff2;base64,d09GMgAB…) format('woff2');
}

Keep embedded fonts small (subset to the glyphs you use) to stay within the template size limit. For most invoices and receipts, the pre-installed families are all you need.

See Template syntax for placeholders and helpers.