@docx-pages/fonts

Freely redistributable faces whose metrics twin the ones documents usually name, so @docx-pages/core can lay a document out when the named fonts cannot be supplied: Carlito for Calibri, Caladea for Cambria, and the Liberation family for Arial, Times New Roman and Courier New. Advance widths match glyph for glyph, so lines break where the named face would have broken them.

import { bestEffortMetrics, layOutDocument, openDocx, readFaceShapes } from "@docx-pages/core";
import { defaultFaces } from "@docx-pages/fonts"; // or "@docx-pages/fonts/node" off a disk

const pkg = openDocx(bytes);
const faces = bestEffortMetrics(suppliedFaces, await defaultFaces(), readFaceShapes(pkg));
const layout = layOutDocument(pkg, faces); // every stand-in comes back out of faces.substitutions()

A document naming a face with no twin falls to a default of the shape the document's own font table gives the name: Open Sans for a sans, carried for its looks rather than its widths, since a name with no twin gets no right widths from anyone. A name nothing classifies falls to Caladea, because Word's own last resort for a name it cannot place is Cambria.

The font files keep their own licenses, committed beside them under fonts/.

One consumer note: the pack finds its files beside its own module, so a dev server that prebundles dependencies has to leave these two alone. Under Vite that is

optimizeDeps: {
  exclude: ["@docx-pages/viewer", "@docx-pages/fonts"];
}

and vite build needs nothing.