@alexsun-top/office2pdf

Node-first TypeScript binding for office2pdf = "0.6" via a generated WebAssembly bridge.

• No LibreOffice service
• No Chromium/Docker/browser-only wrappers
• No Python/CLI dependency

Install

npm install @alexsun-top/office2pdf

Usage

import {
  convertBytes,
  convertDocxToPdf,
  convertPath,
  convertToPdf,
  inferFormat,
  __version__,
  Format,
} from "@alexsun-top/office2pdf";
import { writeFile } from "node:fs/promises";

// infer extension before conversion
const format = inferFormat("/tmp/report.docx"); // "docx"

// convert local file
const result = await convertPath("/tmp/report.docx");
await writeFile("/tmp/report.pdf", result.pdf);

// convert bytes
const input = new Uint8Array([
  /* office file bytes */
]);
const { pdf, warnings, metrics } = await convertBytes(input, Format.DOCX, {
  includeWarnings: true,
  paperSize: "A4",
});

// upstream-compatible JS/WASM helper style: returns PDF bytes only
const helperPdf = await convertDocxToPdf(input);
const genericPdf = await convertToPdf(input, "docx");

API

• __version__: string
• Format: { DOCX: "docx"; PPTX: "pptx"; XLSX: "xlsx"; docx: "docx"; pptx: "pptx"; xlsx: "xlsx" }
• inferFormat(pathOrUrl: string | URL): "docx" | "pptx" | "xlsx"
• convertBytes(data, format, options?)
• convertPath(pathOrUrl, options?)
• convertToPdf(data, format) -> Promise<Uint8Array>
• convertDocxToPdf(data) -> Promise<Uint8Array>
• convertPptxToPdf(data) -> Promise<Uint8Array>
• convertXlsxToPdf(data) -> Promise<Uint8Array>

ConvertOptions accepts both camelCase and snake_case aliases:

• sheetNames / sheet_names
• sheetFilter / sheet_filter compatibility alias for sheet_names
• slideRange / slide_range
• paperSize / paper_size
• fontPaths / font_paths
• pdfStandard / pdf_standard
• includeWarnings / include_warnings
• pdfUa / pdf_ua
• streamingChunkSize / streaming_chunk_size

It also accepts upstream boolean options tagged and streaming.

Rust-native upstream APIs map to this Node package as follows:

• office2pdf::convert(path) and convert_with_options(path, options) correspond to convertPath(path, options?).
• office2pdf::convert_bytes(data, format, options) corresponds to convertBytes(data, format, options?).
• render_document is not exposed because this package does not expose the upstream IR document model.

Unsupported by upstream office2pdf 0.6:

• pageRange / page_range -> throws
  • page_range is not supported by upstream office2pdf 0.6
• memoryLimitMb / memory_limit_mb -> throws
  • memory_limit_mb is not supported by upstream office2pdf 0.6

Result shape

{
  pdf: Uint8Array;
  warnings: string[];
  metrics: null | {
    parseDurationMs: number;
    codegenDurationMs: number;
    compileDurationMs: number;
    totalDurationMs: number;
    inputSizeBytes: number;
    outputSizeBytes: number;
    pageCount: number;
  };
}

CLI

Build exports a office2pdf command:

office2pdf --help
office2pdf --version
office2pdf input.docx output.pdf
office2pdf input.docx -o output.pdf
office2pdf input.xlsx --outdir ./pdfs
office2pdf --paper A4 --landscape --pdf-a input.docx output.pdf
office2pdf --sheets Sheet1,Sheet2 input.xlsx output.pdf
office2pdf --slides 1-3 input.pptx output.pdf
office2pdf --font-path /path/font-a.ttf --font-path /path/font-b.ttf input.docx output.pdf

Supported flags: -o / --output, --outdir, --paper, --landscape, --pdf-a, --sheets, --slides, and repeatable or comma-separated --font-path.

Scripts

• npm run wasm:build — build wasm artifacts to wasm/pkg
• npm run build — build wasm (release), copy publishable wasm files, and compile TypeScript
• npm run typecheck — TypeScript typecheck
• npm test — run Vitest
• npm run check — typecheck + tests + format check

Development

• Rust crate: rust/
• TypeScript entrypoints: src/index.ts, src/cli.ts, src/native.ts
• Tests: tests/index.test.ts, tests/cli.test.ts, tests/real-conversion.test.ts

Release

GitHub Actions runs package checks on every branch push and pull request. The publish workflow runs only when a version tag matching v*.*.* is pushed, for example v0.1.0.

The npm package name is @alexsun-top/office2pdf. For the first manual public publish of this scoped package, run the same local checks and publish with explicit public access:

npm ci
npm run check
npm run build
npm publish --access public

Do not create or push a release tag until the target npm version, exact tag name, remote push target, and publish path have been explicitly approved.

The publish workflow is designed for npm Trusted Publishing with GitHub Actions OIDC. To enable automatic npm authentication without long-lived tokens:

1. Open the package settings on npmjs.com.
2. Add a trusted publisher for agentsyaml/office2pdf-ts.
3. Set the trusted workflow file to .github/workflows/publish.yml.
4. Allow the workflow to run npm publish --access public.

The workflow grants id-token: write, so npm can exchange the GitHub OIDC token during npm publish --access public. No NPM_TOKEN secret is required for this path, and no generated dist/ or wasm/pkg/ files need to be committed.

If Trusted Publishing is unavailable, create an npm automation token, store it as the GitHub Actions secret NPM_TOKEN, configure actions/setup-node with registry-url: https://registry.npmjs.org, and pass the secret only to the publish step as NODE_AUTH_TOKEN. Never commit token values.