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# PDF.js

PDF.js is a Portable Document Format (PDF) viewer that is built with HTML5.

PDF.js is community-driven and supported by Mozilla Labs. Our goal is to
create a general-purpose, web standards-based platform for parsing and
rendering PDFs.

## Contributing

PDF.js is an open source project and always looking for more contributors. To
get involved checkout:

+ [Issue Reporting Guide](https://github.com/mozilla/pdf.js/blob/master/CONTRIBUTING.md)
+ [Code Contribution Guide](https://github.com/mozilla/pdf.js/wiki/Contributing)
+ [Frequently Asked Questions](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions)
+ [Good Beginner Bugs](https://github.com/mozilla/pdf.js/issues?direction=desc&labels=5-good-beginner-bug&page=1&sort=created&state=open)
+ [Priorities](https://github.com/mozilla/pdf.js/milestones)
+ [Attend a Public Meeting](https://github.com/mozilla/pdf.js/wiki/Weekly-Public-Meetings)

For further questions or guidance feel free to stop by #pdfjs on
irc.mozilla.org.

## Getting Started

### Online demo

+ http://mozilla.github.io/pdf.js/web/viewer.html

### Browser Extensions

#### Firefox and Seamonkey

PDF.js is built into version 19+ of Firefox, however the extension is still available:

+ [Development Version](http://mozilla.github.io/pdf.js/extensions/firefox/pdf.js.xpi) - This version is updated every time new code is merged into the PDF.js codebase. This should be quite stable but still might break from time to time. This version is also reported to work when installed as extension in Seamonkey 2.39.

#### Chrome

+ The official extension for Chrome can be installed from the [Chrome Web Store](https://chrome.google.com/webstore/detail/pdf-viewer/oemmndcbldboiebfnladdacbdfmadadm).
*This extension is maintained by [@Rob--W](https://github.com/Rob--W).*
+ Build Your Own - Get the code as explained below and issue `gulp chromium`. Then open
Chrome, go to `Tools > Extension` and load the (unpackaged) extension from the
directory `build/chromium`.

## Getting the Code

To get a local copy of the current code, clone it using git:

    $ git clone git://github.com/mozilla/pdf.js.git
    $ cd pdf.js

Next, install Node.js via the [official package](http://nodejs.org) or via
[nvm](https://github.com/creationix/nvm). You need to install the gulp package
globally (see also [gulp's getting started](https://github.com/gulpjs/gulp/blob/master/docs/getting-started.md#getting-started)):

    $ npm install -g gulp-cli

If everything worked out, install all dependencies for PDF.js:

    $ npm install

Finally you need to start a local web server as some browsers do not allow opening
PDF files using a file:// URL. Run

    $ gulp server

and then you can open

+ http://localhost:8888/web/viewer.html

It is also possible to view all test PDF files on the right side by opening

+ http://localhost:8888/test/pdfs/?frame

## Building PDF.js

In order to bundle all `src/` files into two productions scripts and build the generic
viewer, issue:

    $ gulp generic

This will generate `pdf.js` and `pdf.worker.js` in the `build/generic/build/` directory.
Both scripts are needed but only `pdf.js` needs to be included since `pdf.worker.js` will
be loaded by `pdf.js`. If you want to support more browsers than Firefox you'll also need
to include `compatibility.js` from `build/generic/web/`. The PDF.js files are large and
should be minified for production.

## Learning

You can play with the PDF.js API directly from your browser through the live
demos below:

+ [Hello world](http://mozilla.github.io/pdf.js/examples/learning/helloworld.html)
+ [Simple reader with prev/next page controls](http://mozilla.github.io/pdf.js/examples/learning/prevnext.html)

The repo contains a hello world example that you can run locally:

+ [examples/helloworld/](https://github.com/mozilla/pdf.js/blob/master/examples/helloworld/)

For an introduction to the PDF.js code, check out the presentation by our
contributor Julian Viereck:

+ http://www.youtube.com/watch?v=Iv15UY-4Fg8

You can read more about PDF.js here:

+ http://andreasgal.com/2011/06/15/pdf-js/
+ http://blog.mozilla.com/cjones/2011/06/15/overview-of-pdf-js-guts/

Even more learning resources can be found at:

+ https://github.com/mozilla/pdf.js/wiki/Additional-Learning-Resources

## Questions

Check out our FAQs and get answers to common questions:

+ https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions

Talk to us on IRC:

+ #pdfjs on irc.mozilla.org

Join our mailing list:

+ dev-pdf-js@lists.mozilla.org

Subscribe either using lists.mozilla.org or Google Groups:

+ https://lists.mozilla.org/listinfo/dev-pdf-js
+ https://groups.google.com/group/mozilla.dev.pdf-js/topics

Follow us on twitter: @pdfjs

+ http://twitter.com/#!/pdfjs

Weekly Public Meetings

+ https://github.com/mozilla/pdf.js/wiki/Weekly-Public-Meetings