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pdf-compress-split-utility

v1.0.4

Published

A utility for compressing and splitting PDF files using Ghostscript and PDF-Lib.

Downloads

11

Readme

PDF Compression and Splitting Utility

This utility provides functionality to compress and split PDF files, ensuring that individual pages and entire files do not exceed specified size limits. It utilizes Ghostscript for compression and PDF-Lib for PDF manipulation.

Features

  • Compress PDF Pages: Reduces the size of individual PDF pages to a specified maximum size.
  • Split PDF Files: Splits a PDF file into multiple parts if the file size exceeds a specified limit.

Requirements

  • Node.js: Ensure you have Node.js installed on your system.
  • Ghostscript: This utility depends on Ghostscript for compressing PDF files.
  • For Windows: Download and install Ghostscript from the official Ghostscript website .
  • For Linux: Install Ghostscript using your package manager (e.g., sudo apt-get install ghostscript on Ubuntu).

Installation

To use this library in your project, you can install it via npm:

npm install pdf-compress-split-utility

Usage

Compress PDF Pages

The compressPDF function compresses individual pages of a PDF to ensure they do not exceed the specified size limit.

const { compressPDF } = require('pdf-compress-split-utility');
const path = require('path');

const inputPath = path.join(__dirname, 'path-to-your-pdf.pdf');
const KB = 1024;

(async () => {
  try {
    await compressPDF(inputPath, 900 * KB); // Compress pages to be under 900KB each
    console.log('PDF pages compressed successfully');
  } catch (err) {
    console.error(err);
  }
})();

Split PDF File

The splitPDF function splits a PDF file into smaller parts if the total file size exceeds the specified limit.

const { splitPDF } = require('pdf-compress-split-utility');
const path = require('path');

const inputPath = path.join(__dirname, 'path-to-your-pdf.pdf');
const KB = 1024;

(async () => {
  try {
    await splitPDF(inputPath, 9 * KB * KB); // Split file to be under 9MB
    console.log('PDF split successfully');
  } catch (err) {
    console.error(err);
  }
})();

Combine Compression and Splitting

You can combine both functions to first compress the pages and then split the PDF file if necessary.

const { compressPDF, splitPDF } = require('pdf-compress-split-utility');
const path = require('path');

const inputPath = path.join(__dirname, 'path-to-your-pdf.pdf');
const KB = 1024;

(async () => {
  try {
    await compressPDF(inputPath, 900 * KB); // Compress pages to be under 900KB each
    console.log('PDF pages compressed successfully');

    await splitPDF(inputPath, 9 * KB * KB); // Split file to be under 9MB
    console.log('PDF split successfully');
  } catch (err) {
    console.error(err);
  }
})();

Notes

  • Ensure Ghostscript is installed and accessible from your command line. Verify by running gs --version (Linux) or gswin64c --version / gswin32c --version (Windows).
  • Adjust the paths and size limits (maxPageSize for compressPDF and maxFileSize for splitPDF) as per your requirements.

License

This project is licensed under the MIT License. See the LICENSE file for details.