Introduction

Wrapper around the weasyprint library which allows you to print html to a pdf file. This package does not require any external software or packages to be installed in order to use weasyprint.

Getting started

Installation

dotnet add package Weasyprint.Wrapped

Usage

You might want to provide the printer class using your DI Container.

Initialize
This will unzip the needed asset, it is best done during startup procedure. The printer will check if the asset is already unzipped, so the process is only done once (or when the package is upgraded and the version changed).
```
await new Printer().Initialize();
```

await new Printer().Print("<html><body><h1>TEST</h1></body></html>");

Warning

This is a large package, try to limit the projects where it will be installed.

+-104 MB zipped resource (standalone python, gtk3 for windows and weasyprint) which will be unzipped on initialization in the same folder (for windows).
+-89.7 MB zipped resource (standalone python and weasyprint) which will be unzipped on initialization in the same folder (for linux).

Extra resources

References

Thanks to all these great repos and the guys maintaining them!!!

Weasyprint CLI

The weasyprint program takes at least two arguments:

weasyprint [options] <input> <output>

input: URL or filename of the HTML input, or - for stdin.
output: Filename where output is written, or - for stdout.
-e <encoding>, --encoding <encoding>: Force the input character encoding.
-s <stylesheet>, --stylesheet <stylesheet> URL or filename for a user CSS stylesheet.

This option can be passed multiple times.

-m <media-type>, --media-type <media-type> Media type to use for @media, defaults to print.
-u <base-url>, --base-url <base-url> Base for relative URLs in the HTML input, defaults to the input’s own filename or URL or the current directory for stdin.
-a <attachment>, --attachment <attachment> URL or filename of a file to attach to the PDF document. This option can be passed multiple times.
--pdf-identifier <pdf-identifier> PDF file identifier.
--pdf-variant <pdf-variant> PDF variant to generate.

Possible choices: pdf/a-1b, pdf/a-2b, pdf/a-3b, pdf/a-4b, pdf/ua-1.
--pdf-version <pdf-version> PDF version number.
--pdf-forms Include PDF forms.
--uncompressed-pdf Do not compress PDF content, mainly for debugging purpose.
--custom-metadata Include custom HTML meta tags in PDF metadata.
-p, --presentational-hints Follow HTML presentational hints.
--optimize-images Optimize size of embedded images with no quality loss.
-j <jpeg-quality>, --jpeg-quality <jpeg-quality> JPEG quality between 0 (worst) to 95 (best).
--full-fonts Embed unmodified font files when possible.
--hinting Keep hinting information in embedded fonts.
-c <cache-folder>, --cache-folder <cache-folder> Store cache on disk instead of memory, folder is created if needed and cleaned after the PDF is generated.
-D <dpi>, --dpi <dpi> Set maximum resolution of images embedded in the PDF.
-v, --verbose Show warnings and information messages.
-d, --debug Show debugging messages.
-q, --quiet Hide logging messages.
--version Print WeasyPrint’s version number and exit.
-i, --info Print system information and exit.
-O <optimize-size>, --optimize-size <optimize-size> Deprecated, use other options instead.

Possible choices: images, fonts, hinting, pdf, all, none. This option can be passed multiple times.
-h, --help: Show this help message and exit.

Contribute

Create test package and run example

Windows:

.\build-on-windows.ps1

Linux:

.\build-on-linux.ps1

Create package:

cd .\src\Weasyprint.Wrapped\
dotnet pack -p:PackageVersion=0.0.25 --output nupkgs

Update the example project package version (Weasyprint.Wrapped.Example.csproj) and run the example to test it

Error in tests

The following error might be thrown when running the tests on windows:

(process:13448): GLib-GIO-WARNING **: 17:21:45.816: Unexpectedly, UWP app `Microsoft.OutlookForWindows_1.2023.1114.100_x64__8wekyb3d8bbwe' (AUMId `Microsoft.OutlookForWindows_8wekyb3d8bbwe!Microsoft.OutlookforWindows') supports 1 extensions but has no verbs

Check here for the answer: https://stackoverflow.com/questions/67607643/what-does-this-warning-mean-it-happens-every-time-i-restart-the-node-process#answer-67715630

Building assets

Windows (build-on-windows.ps1 does approximately this)

Download https://github.com/tschoonj/GTK-for-Windows-Runtime-Environment-Installer/releases and install to C:\weasyprint.wrapped\standalone-win-64\gtk
Download https://github.com/indygreg/python-build-standalone/releases (correct release, eg: cpython-3.10.4+20220502-x86_64-pc-windows-msvc-shared-install_only.tar.gz for windows) and extract to c:\weasyprint.wrapped\standalone-win-64\python

Add gtk3 to path (in current session)

$Env:PATH += ";C:\weasyprint.wrapped\standalone-win-64\gtk3\bin"

Install weasyprint in the standalone python

cd c:\weasyprint.wrapped\standalone-win-64\python
.\python.exe -m pip install weasyprint
.\python.exe -m weasyprint --info

Linux (build-on-linux.ps1 does approximately this)

Install powershell on ubuntu (https://docs.microsoft.com/en-us/powershell/scripting/install/install-ubuntu?view=powershell-7.2)
Download https://github.com/indygreg/python-build-standalone/releases (correct release, eg: cpython-3.10.4+20220502-x86_64-unknown-linux-gnu-install_only.tar.gz for Linux) and extract to c:\weasyprint.wrapped\standalone-linux-64\python