pdf2png.js

  app.get(/(.*\.pdf)\/([0-9]+).png$/i, function (req, res) {
    var pdfPath = req.params[0];
    var pageNumber = req.params[1];
 
    var PDFImage = require("pdf-image").PDFImage;
    var pdfImage = new PDFImage(pdfPath);
 
    pdfImage.convertPage(pageNumber).then(function (imagePath) {
      res.sendFile(imagePath);
    }, function (err) {
      res.send(err, 500);
    });
  });