html2pdf converts any webpage or element into a printable PDF entirely client-side using html2canvas and jsPDF.

The simplest way to use html2pdf is to download dist/html2pdf.bundle.min.js to your project folder and include it in your HTML with:

<script src="html2pdf.bundle.min.js"></script>

Note: Click here for more information about using the unbundled version dist/html2canvas.min.js.

Install html2pdf and its dependencies using NPM with npm install --save html2pdf.js (make sure to include .js in the package name).

Note: You can use NPM to create your project, but html2pdf will not run in Node.js, it must be run in a browser.

Install html2pdf and its dependencies using Bower with bower install --save html2pdf.js (make sure to include .js in the package name).

Once installed, html2pdf is ready to use. The following command will generate a PDF of #element-to-print and prompt the user to save the result:

var element = document.getElementById('element-to-print');
html2pdf(element);

Every step of html2pdf is configurable, using its new Promise-based API. If html2pdf is called without arguments, it will return a Worker object:

var worker = html2pdf();  // Or:  var worker = new html2pdf.Worker;

This worker has methods that can be chained sequentially, as each Promise resolves, and allows insertion of your own intermediate functions between steps. A prerequisite system allows you to skip over mandatory steps (like canvas creation) without any trouble:

// This will implicitly create the canvas and PDF objects before saving.
var worker = html2pdf().from(element).save();

The basic workflow of html2pdf tasks (enforced by the prereq system) is:

.from() -> .toContainer() -> .toCanvas() -> .toImg() -> .toPdf() -> .save()

A few aliases are also provided for convenience:

html2pdf can be configured using an optional opt parameter:

var element = document.getElementById('element-to-print');
var opt = {
  margin:       1,
  filename:     'myfile.pdf',
  image:        { type: 'jpeg', quality: 0.98 },
  html2canvas:  { scale: 2 },
  jsPDF:        { unit: 'in', format: 'letter', orientation: 'portrait' }
};

// New Promise-based usage:
html2pdf().from(element).set(opt).save();

// Old monolithic-style usage:
html2pdf(element, opt);

The opt parameter has the following optional fields:

You may add html2pdf-specific page-breaks to your document by adding the CSS class html2pdf__page-break to any element (normally an empty div). For React elements, use className=html2pdf__page-break. During PDF creation, these elements will be given a height calculated to fill the remainder of the PDF page that they are on. Example usage:

<div id="element-to-print">
  <span>I'm on page 1!</span>
  <div class="html2pdf__page-break"></div>
  <span>I'm on page 2!</span>
</div>

You may customize the image type and quality exported from the canvas by setting the image option. This must be an object with the following fields:

These options are limited to the available settings for HTMLCanvasElement.toDataURL(), which ignores quality settings for 'png' images. To enable png image compression, try using the canvas-png-compression shim, which should be an in-place solution to enable png compression via the quality option.

The Worker object returned by html2pdf() has a built-in progress-tracking mechanism. It will be updated to allow a progress callback that will be called with each update, however it is currently a work-in-progress.

html2pdf depends on the external packages html2canvas, jsPDF, and es6-promise. These dependencies are automatically loaded when using NPM or the bundled package.

If using the unbundled dist/html2pdf.min.js (or its un-minified version), you must also include each dependency. Order is important, otherwise html2canvas will be overridden by jsPDF's own internal implementation:

<script src="es6-promise.auto.min.js"></script>
<script src="jspdf.min.js"></script>
<script src="html2canvas.min.js"></script>
<script src="html2pdf.min.js"></script>

When submitting an issue, please provide reproducible code that highlights the issue, preferably by creating a fork of this template jsFiddle (which has html2pdf already loaded). Remember that html2pdf uses html2canvas and jsPDF as dependencies, so it's a good idea to check each of those repositories' issue trackers to see if your problem has already been addressed.

If you want to create a new feature or bugfix, please feel free to fork and submit a pull request! Use the develop branch, which features the latest development, and make changes to /src/ rather than directly to /dist/. You can test your changes by rebuilding with npm run build.

Erik Koopmans

The MIT License

Copyright (c) 2017 Erik Koopmans <http://www.erik-koopmans.com/>