html-pdf converters that are compatible with css flex-box

Question

I am trying to put together a pdf from html template code. The problem I am running into is that the html-pdf converters I have tried don't format the css properly, I guess they are not yet compatible with css flex-box.

I have looked at two approaches:

1. Using html-pdf package on Node.js

2. Using jinja2, pdfkit and wkhtmltopdf in python

Both approaches allow me to template the html and dynamically build a pdf from html but the css conversion does not 100% work (css flex-box fails).

Any ideas on html to pdf converters that can handle css flex-box? Or, does anyone know of any fixes for the approaches above so they can handle css flex-box? Just want to make a pdf from css flex-box styled html.

Thanks!

Answer 1

You can use jsPDF along with html 2 canvas.

HTML2canvas takes sreenshots of a element an js pdf downloads them.

I found in the html2canvas library it supports flex.

Here is an example(without using flex);

 function savetopdf(){ var HTML_Width = $(".result").width(); var HTML_Height = $(".result").height(); var top_left_margin = 5; var PDF_Width = HTML_Width + (top_left_margin * 2); var PDF_Height = (PDF_Width * 1.5) + (top_left_margin * 2); var canvas_image_width = HTML_Width; var canvas_image_height = HTML_Height; var totalPDFPages = Math.ceil(HTML_Height / PDF_Height) - 1; html2canvas($(".result")[0]).then(function (canvas) { var imgData = canvas.toDataURL("image/jpeg", 1.0); var pdf = new jsPDF('p', 'pt', [PDF_Width, PDF_Height]); pdf.addImage(imgData, 'JPG', top_left_margin, top_left_margin, canvas_image_width, canvas_image_height); for (var i = 1; i <= totalPDFPages; i++) { pdf.addPage(PDF_Width, PDF_Height); pdf.addImage(imgData, 'JPG', top_left_margin, -(PDF_Height*i)+(top_left_margin*4),canvas_image_width,canvas_image_height); } pdf.save("aswinwriter.pdf"); }); }

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.3/jspdf.min.js"></script> <script src="https://html2canvas.hertzen.com/dist/html2canvas.js"></script> <script src="https://code.jquery.com/jquery-1.12.4.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script> <div id="result" class="result"> Example </div> <button onclick="savetopdf()">TRY IT </button>

Answer 2

I use pdfkit with python and found the same problem. I could solve it using this page . The page adds prefixes to the CSS and makes it compatible with old versions.