How to install wkhtmltopdf on heroku?

Question

Heroku

Hello, I'm trying to install wkhtmltopdf for my herokuapp because locally my flask app works (creates a pdf file) and I need it to work when running on heroku.

I was told that wkhtmltopdf just needs to be installed on the heroku server, but the problem is that I do not understand how to work on it using the command line.

I found this tutorial

https://elements.heroku.com/buildpacks/issueapp/he...

but it is simplified as much as possible - I do not understand from which side to approach it.

By default, deploying to heroku is done like this:

1. An app is created on the heroku.dashboard site
2. Next, I go locally to the project directory and do deploy (as it is described in the tooltip that appears after creating the app). Of course, you first need to do pip freeze > requirements.txt

I don’t understand at what step the instruction that I discovered is used ?!

Thanks a lot

Answer 1

https://stackoverflow.com/questions/52721272/pytho... advises to install pydf :
pip install python-pdf

Wkhtmltopdf binaries are precompiled and included in the package making pydf easier to use, in particular this means pydf works on heroku .