@wasm-zoo/qpdf

Unofficial WASM Zoo distribution of the upstream QPDF 12.4.2 CLI for browsers. This package is backed by QPDF 12.4.2, Zoo builder 0.1.1, and the reviewed browser-full Release asset.

Install

npm install @wasm-zoo/qpdf

Use

import { load } from "@wasm-zoo/qpdf";

const qpdf = await load();
try {
  const result = await qpdf.exec(["/input.pdf", "/output.pdf", "--linearize"], {
    files: [{ name: "/input.pdf", data: inputBytes }],
    outputs: ["/output.pdf"]
  });
  console.log(result.files[0].data);
} finally {
  qpdf.dispose();
}

The default entry imports the reviewed browser wrapper and uses static new URL(..., import.meta.url) references so modern bundlers can emit qpdf-core.js, qpdf-core.wasm. For manual/self-hosted deployments use @wasm-zoo/qpdf/self-hosted and the Consumer API v1 baseUrl contract.

Single-threaded upstream qpdf CLI in an isolated Web Worker with MEMFS and QPDF native crypto. No SharedArrayBuffer is required. Inputs and outputs are explicitly staged in browser memory; there is no native host filesystem access.