@mioffice/pdf-utils

Lightweight PDF utilities for Node.js and the browser. Merge, split, extract, rotate, reorder pages, and read/write metadata — all with zero native dependencies.

Built by MiOffice.ai — the AI office suite where files never leave your browser.

Install

npm install @mioffice/pdf-utils

Usage

import { mergePdfs, splitPdf, extractPages, getPdfMetadata, rotatePdf } from '@mioffice/pdf-utils';
import { readFileSync, writeFileSync } from 'fs';

// Merge multiple PDFs
const merged = await mergePdfs([
  readFileSync('doc1.pdf'),
  readFileSync('doc2.pdf'),
]);
writeFileSync('merged.pdf', merged);

// Split a PDF into individual pages
const pages = await splitPdf(readFileSync('document.pdf'));
pages.forEach((page, i) => writeFileSync(`page-${i + 1}.pdf`, page));

// Extract specific pages (0-indexed)
const extracted = await extractPages(readFileSync('document.pdf'), [0, 2, 4]);
writeFileSync('extracted.pdf', extracted);

// Rotate all pages
const rotated = await rotatePdf(readFileSync('document.pdf'), 90);
writeFileSync('rotated.pdf', rotated);

// Get metadata
const meta = await getPdfMetadata(readFileSync('document.pdf'));
console.log(meta);
// { title: '...', author: '...', pageCount: 12, pageSizes: [...] }

API

| Function | Description | |----------|-------------| | mergePdfs(pdfs) | Combine multiple PDFs into one | | splitPdf(pdf) | Split a PDF into single-page PDFs | | extractPages(pdf, indices) | Extract specific pages (0-indexed) | | removePages(pdf, indices) | Remove specific pages | | reorderPages(pdf, newOrder) | Reorder pages by index | | rotatePdf(pdf, degrees) | Rotate all pages (90, 180, 270) | | getPdfMetadata(pdf) | Read title, author, page count, sizes | | setPdfMetadata(pdf, meta) | Write title, author, subject, etc. |

All functions accept Uint8Array | ArrayBuffer and return Uint8Array.

Browser Usage

Works in any modern browser. No Node.js-specific APIs used.

<script type="module">
  import { mergePdfs } from 'https://esm.sh/@mioffice/pdf-utils';

  const file1 = await fetch('/doc1.pdf').then(r => r.arrayBuffer());
  const file2 = await fetch('/doc2.pdf').then(r => r.arrayBuffer());
  const merged = await mergePdfs([new Uint8Array(file1), new Uint8Array(file2)]);
</script>

Why This Exists

MiOffice.ai provides 67+ file processing tools that run 100% in your browser — no uploads, no signup, no cloud. This package extracts our PDF utilities for developers who need the same capabilities in their own apps.

License

MIT — JSVV SOLS LLC