Indeed, the way includes

• Don't just simply convert a HTML file to PDF, one-to-one. Otherwise, you can never control page breaks.
• Nonetheless, HTML rendering will be web-browser dependent. (Therefore, not sure about Pandoc.)
• CSS is powerful, but are there exceptions?

Therefore, I suggest a way of using a web driver + a PDF library, that can READ and MODIFY pdf.

The web driver is currently best either Puppeteer, or Chrome DevTools Protocol.

Additionally, it might be possible to distribute PDF generator via Electron + Puppeteer-in-Electron.

How to use puppeteer-core with electron?

Oct 3 '19 Comments: 1 Answers: 4

12

I got this code from another Stackoverflow Question:

import electron from "electron";
import puppeteer from "puppeteer-core";

const delay = (ms: number) =>
  new Promise(resolve => {
    setTimeout(() => {
      resolve();
    }, ms);
  });

(async () => {
  try {
    const app = await puppeteer.launch({
      executablePath: electron,
      args: ["."],
      headless: false,

…

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The PDF manager, that can read-and-merge PDF, is traditionally either PDFtk (binary) or pdfbox (Java), I think; but I have just recently found,

About CSS, yes CSS can also detect page margins.

  body {
    position: fixed;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
  }

This is my attempt so far.

So, the answer to the question is, no, do not convert a single HTML or Markdown file, to one PDF file; but do combine within a folder. Also,

• Running a web server might be better than using file:// protocol and relative paths
• Choosing a web browser might affect result.

Also, consider alternatives to PDF, that easily allow editing. Might be odt or docx?