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

1. Copy html2pdf.js to your project directory.
2. Fetch the dependencies html2canvas and jsPDF, which can be found in the vendor folder.
3. Include the files in your HTML document (order is important, otherwise jsPDF will override html2canvas with its own internal implementation):

<script src="jspdf.min.js"></script>
<script src="html2canvas.min.js"></script>
<script src="html2pdf.js"></script>

Note: For best results, use the custom build of html2canvas found in the vendor folder, which contains added features and hotfixes.

Including html2pdf exposes the html2pdf function. Calling it will create a PDF and prompt the user to save the file:

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

The PDF can be configured using an optional opt parameter:

var element = document.getElementById('element-to-print');
html2pdf(element, {
  margin:       1,
  filename:     'myfile.pdf',
  image:        { type: 'jpeg', quality: 0.98 },
  html2canvas:  { dpi: 192, letterRendering: true },
  jsPDF:        { unit: 'in', format: 'letter', orientation: 'portrait' }
});

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.

html2pdf depends on the external packages html2canvas and jsPDF.

For best results, use this custom build of html2canvas, which includes bugfixes and adds support for box-shadows and custom resolutions (via the dpi/scale options).

When submitting an issue, please provide reproducible code that highlights the issue, preferably by creating a fork of this template jsFiddle (which has html2canvas and its dependencies already included as external resources). 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.

Right now, html2pdf is a single source file located in /src/. If you want to create a new feature or bugfix, feel free to fork and submit a pull request!

Erik Koopmans

The MIT License

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