Node PDFBox

node-pdfbox is a bridge library to manipulate PDF based on PDFBox (https://pdfbox.apache.org/)

Installation

Dependencies

This module require JVM configured on host machine to work. When you use this module with nw.js you need to specify this requisite on installation process.

You can use node-pdfbox with NW.js, but don't forget to install JDK to compile java module, after that you can distribute you app in a machine with JVM installed.

npm install --save node-pdfbox

Quick Examples

If you want to call async operations just use the method without Sync suffix.

Sync

  page.extractSync('path.pdf');

Async

  page.extract('path.pdf')
  .then(function() {
 
  })
  .catch(function(err) {
 
  })
  .finally(function() {
 
  });

Basic operations

let Document = require('node-pdfbox');
 
let document = Document.loadSync('/path/to/document.pdf');
let page = document.getPageSync(0);
let image = page.getImageSync();
let imageScaled = page.getImageSync(2.0);
let imageScaledToFill = page.getImageSync(1300, 1800);
 
let newDocument = page.extractSync('path-to-new-document.pdf');
newDocument.addPageSync(document.getPageSync(3));
newDocument.addPagesSync(document, 0, 10, 1);
 
image.fitSync(100, 100).saveSync('path.jpg');
image.cropSync(100, 100).saveSync('path.jpg');
image.cropSync(0, 0, 100, 100).saveSync('path.jpg');
image.cropSync(100, 100, {
  vertical: 'bottom',
  horizontal: 'right'
}).saveSync('path.jpg');
 
image.saveSync('path.jpeg', 'jpg');
 

or

 
Document.load('/path/to/document.pdf')
.then(function(document) {
  return document.getPage(0);
})
.then(function(page) {
  return page.getImage(2.0) //scale
})
.then(function(image) {
  //do something ...
})
.catch(function(err) {
  console.error(err);
})
.finally(function() {
  //Done!
});
 

Get information

 
let title = document.getInfoSync('Title');
let title1 = document.getTitleSync(); //The same of getInfo
let author = document.getAuthorSync();
let subject = document.getSubjectSync();
let keywords = document.getKeywordsSync();
 

Number of pages

 
let numberOfPages = document.pagesCountSync();
 

Add pages to document

 
document.addPageSync(page); //PDFPage to end of file
document.addPageSync('path.pdf', 0, 0); // add page (second) from path (first) at index (third)  
 
document.addPagesSync('path.pdf'); //Copy all pages from path to end of document
document.addPagesSync(otherDocument); //Copy all pages from PDFDocument
document.addPagesSync(otherDocument, 0); //atIndex
document.addPagesSync(otherDocument, 0, 10, 0); //start, end, atIndex
 

Save document

 
document.saveSync(); //save current document
document.saveSync('path.pdf') //save as
 

Get page

 
let page = document.getPageSync(0);
 

Get crop box rect

 
page.getRectSync();
 

Get scale to fill

 
page.getAspectFillScaleSync(100, 100); //width, height
 

Get scale to fit

 
page.getAspectFitScaleSync(100, 100); //width, height
 

Get text

 
page.getTextSync();
 

Extract page

 
let doc = page.extractSync('/path/to/save');
 

Create image

 
const scale = 2;
 
let image = page.getImageSync();
let image1 = page.getImageSync(scale); //scaled
let image2 = page.getImageSync(500, 500); //width, height - crop on center
 

Fit image

 
image.fitSync(100, 100).saveSync('/path/to/save');
 

Crop image

 
image.cropSync(301, 301).saveSync('/path/to/save');
 

Save image

 
image.saveSync('/path/to/save');
 

Known issues

Before install this module, check whether jvm is installed. To compile this module you need to install JDK.

Not implemented yet

• Working with Encrypting and signing PDFs
• Support to create PDF