Create a thumbnail from a PDF in Node

thumbnail.js

var gm = require('gm');

// Create JPG from page 0 of the PDF
gm("file.pdf[0]") // The name of your pdf
    .setFormat("jpg")
    .resize(200) // Resize to fixed 200px width, maintaining aspect ratio
    .quality(75) // Quality from 0 to 100
    .write("/tmp/cover.jpg", function(error){
        // Callback function executed when finished
        if (!error) {
            console.log("Finished saving JPG");
        } else {
            console.log("There was an error!", error);
        }
    });

// Create a PNG using thumbnail function
gm("file.pdf[0]")
    .thumb(
        200, // Width
        200, // Height
        '/tmp/thumbnail.png', // Output file name
        80, // Quality from 0 to 100
        function (error, stdout, stderr, command) {
            if (!error) {
                console.log(command);
            } else {
                console.log(error);
            }
        }
    );