office-to-pdf

Prerequests

Make sure you have installed latest version of libreoffice:

sudo apt-get install libreoffice-base -y
sudo add-apt-repository ppa:libreoffice/ppa -y
sudo apt-get update
sudo apt-get install libreoffice -y

To check LibreOffice's version:

soffice --version

It will be good if you have installed 6.1.x version, 5.x has failed several times.

Example:

const toPdf = require("office-to-pdf");
const fs = require("fs");
const wordBuffer = fs.readFileSync("./test.docx");

toPdf(wordBuffer, 10)
  .then((pdfBuffer) => {
    fs.writeFileSync("./test.pdf", pdfBuffer)
  })
  .catch((err) => {
     console.log(err)
  });

Here wordBuffer is buffer of test.docx file, and 10 is timeout for conversion in seconds.
If script didn't have converted file within 10s, it will throw an error.
Default value for timeout is 60s.