Node.js PDF-LIB Example to Create PDF File and Add Text & Images in Command Line Using Javascript

Welcome folks today in this blog post we will be using the pdf-lib library to create pdf documents and adding text and images in command line using javascript. All the full source code of the application is shown below.

Get Started

In order to get started you need to initialize a new node.js project using the below command

npm init- y

After that you need to install the below libraries using the npm command as shown below

npm i pdf-lib

Now we need to create the index.js file and copy paste the following code

index.js

const { PDFDocument, StandardFonts, rgb } = require("pdf-lib");
const fs = require("fs");

run().catch((err) => console.log(err));

async function run() {
  // Create a new document and add a new page
  const pdfDoc = await PDFDocument.create();
  const page = pdfDoc.addPage();

  const timesRomanFont = await pdfDoc.embedFont(StandardFonts.TimesRoman);

  // Get the width and height of the page
  const { width, height } = page.getSize();

  // Draw a string of text toward the top of the page
  const fontSize = 30;
  page.drawText("Creating PDFs in JavaScript is awesome!", {
    x: 50,
    y: height - 4 * fontSize,
    size: fontSize,
    font: timesRomanFont,
    color: rgb(0, 0.53, 0.71),
  });
  // Write the PDF to a file
  fs.writeFileSync("./test.pdf", await pdfDoc.save());
}

const { PDFDocument, StandardFonts, rgb } = require("pdf-lib");

const fs = require("fs");

run().catch((err) => console.log(err));

async function run() {

// Create a new document and add a new page

const pdfDoc = await PDFDocument.create();

const page = pdfDoc.addPage();

const timesRomanFont = await pdfDoc.embedFont(StandardFonts.TimesRoman);

// Get the width and height of the page

const { width, height } = page.getSize();

// Draw a string of text toward the top of the page

const fontSize = 30;

page.drawText("Creating PDFs in JavaScript is awesome!", {

x: 50,

y: height - 4 * fontSize,

size: fontSize,

font: timesRomanFont,

color: rgb(0, 0.53, 0.71),

});

// Write the PDF to a file

fs.writeFileSync("./test.pdf", await pdfDoc.save());

}

As you can see we are importing the pdf-lib library and then we are using the drawText() method to insert the text inside the pdf document at x and y position and also we are using the custom fonts which is called timesRomanFont and also we are providing the custom color of the text. And then we are saving the pdf document using the fs module.

Adding Images in PDF Document

index.js

const { PDFDocument } = require("pdf-lib");
const fs = require("fs");

run().catch((err) => console.log(err));

async function run() {
  // Create a new document and add a new page
  const doc = await PDFDocument.create();
  const page = doc.addPage();

  // Load the image and store it as a Node.js buffer in memory
  let img = fs.readFileSync("./image.jpg");
  img = await doc.embedJpg(img);

  // Draw the image on the center of the page
  const { width, height } = img.scale(1);
  page.drawImage(img, {
    x: page.getWidth() / 2 - width / 2,
    y: page.getHeight() / 2 - height / 2,
  });

  // Write the PDF to a file
  fs.writeFileSync("./test.pdf", await doc.save());
}

const { PDFDocument } = require("pdf-lib");

const fs = require("fs");

run().catch((err) => console.log(err));

async function run() {

// Create a new document and add a new page

const doc = await PDFDocument.create();

const page = doc.addPage();

// Load the image and store it as a Node.js buffer in memory

let img = fs.readFileSync("./image.jpg");

img = await doc.embedJpg(img);

// Draw the image on the center of the page

const { width, height } = img.scale(1);

page.drawImage(img, {

x: page.getWidth() / 2 - width / 2,

y: page.getHeight() / 2 - height / 2,

});

// Write the PDF to a file

fs.writeFileSync("./test.pdf", await doc.save());

}

As you can see we are using the drawImage() method to add the image inside the pdf document and then we are providing the x and y coordinates and then we are using the fs module to save the image in pdf document.