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This buildpack downloads and extracts the most recent wkhtmltopdf binaries from https://wkhtmltopdf.org and works on heroku-22, heroku-20 and heroku-18 stacks.

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RohanDebroy/heroku-buildpack-wkhtmltopdf

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heroku-buildpack-wkhtmltopdf

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📝 Table of Contents

About

This buildpack downloads and extracts the wkhtmltopdf binaries and works on heroku-18, heroku-20 and heroku-22 stacks.

  • This buildpack downloads wkhtmltopdf v0.12.6.1-2 for heroku-22, v0.12.6-1 for heroku-20 stack and v0.12.5 for heroku-18 stack.
  • This buildpack can bypass stack detection if the url to the wkhtmltopdf binary is provided through Aptfile.

Changelog

  • v1.0 (initial release)

    • Support for Cedar-14, heroku-16, and heroku-18
    • Support for Aptfile
  • v2

    • Added support for Heroku-20
    • Removed support for Cedar-14 and heroku-16 as they reached end of life.
  • v3

    • Added support for Heroku-22
    • Added support for bypassing stack detection.

Features

  • Downloads wkhtmltopdf binaries from wkhtmltopdf.org
  • It doesnot add new environment variables or shell scripts.
  • Tested on heroku-22, heroku-20 and heroku-18stack images.
  • It allows you to specify a custom or the latest version of wkhtmltopdf package for your app on Heroku. Aptfile.

Getting Started

Just add the buildpack to your heroku app by executing:

heroku buildpacks:add https://github.com/RohanDebroy/heroku-buildpack-wkhtmltopdf.git

You can also force this buildpack to be the first Heroku process by using the --index option:

heroku buildpacks:add --index=1 https://github.com/RohanDebroy/heroku-buildpack-wkhtmltopdf.git

Aptfile(Optional)

To use a specific version of the wkhtmltopdf binary for your app on Heroku, you can include an Aptfile in the parent directory of your app. This file should contain the latest or custom download URL for the binary.

By including the Aptfile, you can bypass Heroku's stack detection and ensure that the correct version of wkhtmltopdf is downloaded during the build process.

Here are the steps to include an Aptfile in your app:

  • Create a file named "Aptfile" in the parent directory of your app.
  • Add the download URL for the version of wkhtmltopdf that you want to use to the Aptfile.
  • Commit the Aptfile to your app's Git repository.
  • Push the changes to Heroku.
  • Once you've completed these steps, Heroku will use the specified version of wkhtmltopdf during the build process for your app.

Warning: When using an Aptfile to specify the version of wkhtmltopdf for your app on Heroku, it's important to note that the Aptfile bypasses stack detection. This means that you need to make sure you are using the correct binary version for your Heroku stack.

Usage

The binaries wkhtmltopdf and wkhtmltoimage will be available on /app/bin, you can just execute /app/bin/wkhtmltopdf and /app/bin/wkhtmltoimage from your app.

Acknowledgements

License

MIT

About

This buildpack downloads and extracts the most recent wkhtmltopdf binaries from https://wkhtmltopdf.org and works on heroku-22, heroku-20 and heroku-18 stacks.

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