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ruby-on-railsherokuwkhtmltopdf

Different output wkhtmltopdf local and on heroku

On my Macbook I have wkhtmltopdf installed and when I do wkhtmltopdf -V I get:

wkhtmltopdf 0.12.2.1 (with patched qt)

When I deploy the Rails app to Heroku, the PDF renders different. So I checked the version on Heroku with heroku run "wkhtmltopdf -V", but that gives me:

bash: wkhtmltopdf: command not found.

The PDF itself renders fine on Heroku, so there must be a wkhtmltopdf installed I guess? I followed these instructions to create a buildpack, but with no change when I request the version:

https://elements.heroku.com/buildpacks/rafaelp/heroku-buildpack-wkhtmltopdf

In the Gemfile I have this:

group :development do
  gem 'wkhtmltopdf-binary-edge', '~> 0.12.2.1'
end

So, how do I properly install wkhtmltopdf on Heroku and make sure the version is the same as on my Macbook?

Solution

  • You're probably seeing a conflict in versions here between a binary bundled in the gem you're using in development, and another binary.

    You should manually manage your wkhtmltopdf binary manually in development & heroku (homebrew/apt-get + buildpack), or use a gem which includes the binaries in both environments. Not a mix of both, as you'll get inconsistent results.

    Personally, I use this buildpack on heroku and use brew to install the version I need locally for development.