vellora

HTML to PDF for Node.js — native and browserless by default. Public API + templating + strict orchestration, with optional Chromium fidelity routing for selected templates.

Part of the vellora project. 0.x pre-1.0 — the API is implemented, but semver-major changes can still happen before 1.0.

Install

npm install vellora

Usage

import { renderPdf } from "vellora";

const pdf = await renderPdf(html, data);
// pdf: Uint8Array — page size comes from CSS in your HTML: @page { size: A4 }

Core APIs:

• renderPdf(html, data?, opts?) returns a complete PDF Uint8Array.
• renderPdfBatch(items, { concurrency }) caps active renders and preserves input order.
• renderPdfToStream(html, writable, data?, opts?) writes the complete PDF to a writable stream.
• renderTemplate(html, data?) runs the built-in templating layer without rendering.

Supported options include metadata, pdfa: "PDF/A-2b", fonts, images, baseUrl, strict, and explicit engine routing ("native", "chromium", or "auto").

See the project README for the full guide, compatibility table, and roadmap.

License

MIT — see LICENSE.