pdfjs-serverless

Note

Work in progress.

A redistribution of Mozilla's PDF.js for serverless enviroments, like Deno Deploy and Cloudflare Workers.

How It Works

First, some string replacements of the pdf.js library is necessary, i.e. removing browser context references. Additionally, we enforce Node.js (might sound paradox at first, bear with me) compatibility, i.e. polyfilling the canvas module and setting the isNodeJS flag to true.

To achieve a nodeless build, unenv does the heavy lifting by converting Node.js specific code to be platform-agnostic.

See the rollup.config.js file for more information.

Installation

Run the following command to add pdfjs-serverless to your project.

# pnpm
pnpm add pdfjs-serverless

# npm
npm install pdfjs-serverless

# yarn
yarn add pdfjs-serverless

Usage

Deno

import { getDocument } from 'https://esm.sh/pdfjs-serverless'

const data = Deno.readFileSync('./dummy.pdf')
const doc = await getDocument(data).promise

console.log(await doc.getMetadata())

In Combination With `unpdf`

The following example shows how to use pdfjs-serverless with unpdf:

import { defineUnPDFConfig, extractPDFText } from 'unpdf'

// Use the serverless version of PDF.js
defineUnPDFConfig({
  pdfjs: () => import('pdfjs-serverless')
})

// Now, you can use the other methods provided by unpdf

// Fetch a PDF file from the web
const pdf = await fetch('https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf')
  .then(res => res.arrayBuffer())

// Pass the PDF buffer to the relevant method
const { totalPages, text } = await extractPDFText(
  new Uint8Array(pdf), { mergePages: true }
)

Inspiration

pdf.mjs

JSPM