wkhtmltopdf missing SVG paths (Rendering)

Answer 1

A workaround is to convert the .SVG files to .PNG files before converting to .PDF. The .SVG code can be extracted via AgilityPack or read the files as a string. Then use the Svg library to convert to .PNG as follows:

var svg = SvgDocument.FromSvg<SvgDocument>(svgXmlAsString);
var bitmap = svg.Draw();
var codec = "image/png".ParseImageCodecInfo();
// intermediaryStream required due to image.Save attempting read access
using (var intermediaryStream = new MemoryStream())
{
    bitmap.Save(intermediaryStream, codec);
    intermediaryStream.Position = 0;
    await intermediaryStream.CopyToAsync(responseStream);
    await intermediaryStream.FlushAsync();
    await responseStream.FlushAsync();
}

Answer 2

So not a exact solution but a far better alternative now is to use a chrome in headless mode

$ chrome --headless --disable-gpu --print-to-pdf test.html
[0427/011400.636954:WARNING:dns_config_service_posix.cc(174)] dns_config has unhandled options!
[0427/011400.638406:ERROR:gpu_process_transport_factory.cc(1007)] Lost UI shared context.
[0427/011400.801881:INFO:headless_shell.cc(586)] Written to file output.pdf. 

Also if you want better control on the process, you would use NodeJS and puppeteer

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto('https://news.ycombinator.com', {waitUntil: 'networkidle2'});
  await page.pdf({path: 'hn.pdf', format: 'A4'});

  await browser.close();
})();