Gravity PDF is a GPLv2-licensed WordPress plugin that allows you to automatically generate, email and download PDF documents using Gravity Forms.
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bin Add automatic WP deployment on new tags Nov 20, 2018
bower_components/backbone.modelbinder Use Gravity Forms copy of Chosen JS Dec 14, 2016
initialisation en_US base localization Sep 11, 2018
src Resolve #814 Dec 7, 2018
tests Allow anchor tag to be direct parent of img in Header / Footer Nov 26, 2018
.babelrc Resolve JS errors in build and tests Jun 18, 2018
.eslintrc Create a advanced PDF template selected using ReactJS Nov 19, 2016
.gitattributes Better optimise build Mar 12, 2018
.gitignore Commit our composer.lock file to ensure the version we test is the ve… Dec 7, 2018
.travis.yml Allow travis failure on PHP7.3 until Gravity Forms is patched Dec 7, 2018
CHANGELOG.txt en_US base localization Sep 11, 2018 Swap our 'rules' for 'guidelines' in contribution guide Nov 20, 2015 Update affiliate link to Gravity Forms Apr 4, 2018
README.txt Update version and changelog Dec 7, 2018
api.php Define the mPDF tmp location and use that instead of the `template_fo… Oct 5, 2018
composer.json Fix up the post-install/update composer commands Dec 10, 2018
composer.lock Ensure lowest supported version of PHP is used for composer Dec 7, 2018
gulpfile.js Flesh out the Font Downloader code Apr 4, 2018
karma.conf.js Ensure legacy JS is included as part of the tests (even though Webpac… Apr 4, 2018
package.json Update JS-managed plugins May 24, 2018
pdf.php Update version and changelog Dec 7, 2018
phpunit.xml Exclude node_modules directory from phpunit test search May 10, 2016
webpack.config.js Resolve JS errors in build and tests Jun 18, 2018
yarn.lock Update JS-managed plugins May 24, 2018

Gravity PDF

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Gravity PDF is a GPLv2-licensed WordPress plugin that allows you to automatically generate, email and download PDF documents using the popular form-builder plugin, Gravity Forms. Find out more about Gravity PDF at


This Git repository is for developers who want to contribute to Gravity PDF. Don't use it in production. For production use, download Gravity PDF from the WordPress Plugin Directory.

The development branch is considered our bleeding edge branch, with all new changes pushed to it. The master branch is our latest stable version of Gravity PDF.


Before beginning, ensure you have Git, Composer and Yarn installed and their commands are globally accessible via the command line.

  1. Clone the repository using git clone
  2. Open your terminal / command prompt to the Gravity PDF root directory and run composer install. This command will automatically download all the PHP and JS packages, and run the build tools.
  3. Copy the plugin to your WordPress plugin directory (if not there already) and active through your WordPress admin area


All documentation can be found at


You are more than welcome to contribute to Gravity PDF but we recommend you open a new issue on GitHub and discuss your use-case before creating a pull request.

There are a few guidelines that need to be followed to ensure a smooth pull request. These include:

  1. Adhere to the existing code standard which follows WordPress standards, with the exception of Yoda conditionals.
  2. All PRs must be to the development branch.
  3. Modifications of the existing codebase must pass all unit tests.
  4. Any additions to the plugin must have appropriate unit tests written.
  5. PRs that don't pass existing unit testing or do not have the proper tests to accompany the changes will not be merged.
  6. Once our team is happy with the PR we'll ask you to squash your branch into a single commit, rebase it onto the development branch and push the changes to GitHub. This ensures we keep a clean Git history.

If you are uncertain whether your PR meets all these requirements, don't worry! If there are problems our friendly team will guide you in the right direction.

Run Unit Tests


We use PHPUnit to test out all the PHP we write. The tests are located in tests/phpunit/unit-tests/

Installing the testing environment is best done using a flavour of Vagrant (try Varying Vagrant Vagrants).

  1. From your terminal SSH into your Vagrant box using the vagrant ssh command
  2. cd into the root of your Gravity PDF directory
  3. Run bash tests/bin/ gravitypdf_test root root localhost where root root is substituted for your mysql username and password (VVV users can run the command as is).
  4. Upon success you can run vendor/bin/phpunit, vendor/bin/phpunit --group ajax and vendor/bin/phpunit --group slow-pdf-processes.

Mocha (JS)

We use the JS libaries, Mocha, Chai and Sinon to test our Javascript and use Karma to run those tests in a variety of browsers. We also use Enzyme to help test ReactJS.

The tests are located in tests/mocha/unit-tests/.

Running the tests can easily be done with one of the following commands:

  • yarn run test – runs all the tests once in PhantomJS
  • yarn run test:watch – watches for changes to the tests and runs in PhantomJS
  • yarn run test:all – runs all tests in Firefox, Chrome and Internet Explorer

Building JS

We use Webpack to compile our Javascript from ES6 to ES5. If you want to modify the Javascript then take advantage of yarn run watch to automatically re-build the JS when changes are made.