Tips on replacing wkhtmltopdf/KnpSnappyBundle with WeasyPrintBundle

[myselfhimself]

Hello,

for a use case of generating A4 from HTML pages (for email attachments), I have noticed while switching from KnpSnappyBundle to WeasyPrintBundle, the output font text ends up much bigger, while keeping an overall layout coherence:

KnpSnappyBundle:

	return $this->knpSnappy->getOutputFromHtml($html, array(
		'orientation' => 'portrait', // or Landscape
		'page-size' => 'A4',
		'encoding' => 'utf-8',
		'dpi' => 72,
		'enable-local-file-access' => true,
	));

WeasyPrintBundle:

       // for available options
       // @see \Pontedilana\PhpWeasyPrint\Pdf::configure
       return $this->weasyprintPdf->getOutputFromHtml($html, array(
           'encoding' => 'utf-8',
       ));
   }

with the following added to the source HTML <style> tag to "enforce" A4 page size

    @page {
        /* related: https://github.com/Kozea/WeasyPrint/issues/1579#issuecomment-1051689324 */
        size: 210mm 297mm;
    }

Would you have CSS/display/options tips for migrating?

[endelwar]

Hi!
WeasyPrintBundle uses PhpWeasyPrint as php library which uses the Command-line API available from WeasyPrint.

In WeasyPrint documentation is stated that

WeasyPrint does not provide support for adjusting page size or document margins via command-line flags. This is best accomplished with the CSS @page at-rule

As you already found out adding @page CSS rule is the only option available.

For orientation option you can add it after size:

@page {
	size: A4 landscape;
}

For dpi option you can experiment with image-resolution (I've never tried it):

img { image-resolution: 300dpi }

I suggest to prepare a dedicated twig template and css for pdf generation, and don't recycle twig/html created for browser use.

[myselfhimself]

Hello @endelwar , thank you for those tips which I have included in our current project; both rules you have stated do work OK.

For people looking into migrating away from wkhtmltopdf / knpsnappybundle, here is a related discussion.