How to Convert PDF to JPG Image in Node.js using REST API

Convert_PDF_file_to_JPG_format_in_NodeJs_Download.js

// construct FileApi to download converted file
var fileApi = groupdocs_conversion_cloud.FileApi.fromConfig(config);
// create donwload file request
let request = new groupdocs_conversion_cloud.DownloadFileRequest("nodejs-testing/sample-file.jpg", myStorage);
// download file and response type Stream
fileApi.downloadFile(request)
    .then(function (response) {
        // save file in your system directory
        fs.writeFile("H:\\groupdocs-cloud-data\\sample-file.jpg", response, "binary", function (err) { });
        console.log("Expected response type is Stream: " + response.length);
    })
    .catch(function (error) {
        console.log("Error: " + error.message);
    });

Convert_PDF_to_JPG_Image_NodeJs_Upload.js

// open file in IOStream from your system drive.
var resourcesFolder = 'H:\\groupdocs-cloud-data\\sample-file.pdf';
// read file
fs.readFile(resourcesFolder, (err, fileStream) => {
  // construct FileApi
  var fileApi = groupdocs_conversion_cloud.FileApi.fromConfig(config);
  // create upload file request
  var request = new groupdocs_conversion_cloud.UploadFileRequest("sample-file.pdf", fileStream, myStorage);
  // upload file
  fileApi.uploadFile(request)
    .then(function (response) {
      console.log("Expected response type is FilesUploadResult: " + response.uploaded.length);
    })
    .catch(function (error) {
      console.log("Error: " + error.message);
    });
});

Convert_PDF_to_JPG_in_NodeJs.js

// How to convert PDF file to JPG image format using Node.js

const convert = async () => {
  const convertApi = groupdocs_conversion_cloud.ConvertApi.fromKeys(clientId, clientSecret);

  const settings = new groupdocs_conversion_cloud.ConvertSettings();
  settings.storageName = myStorage;
  settings.filePath = "nodejs-testing/sample-file.pdf";
  settings.format = "jpg";
  settings.outputPath = "nodejs-testing/sample-file.jpg";

  try {
    // Create convert document request
    const request = new groupdocs_conversion_cloud.ConvertDocumentRequest(settings);
    await convertApi.convertDocument(request);
  }
  catch (err) {
    throw err;
  }
}

convert()
.then(() => {
  console.log("Successfully converted PDF to JPG file format.");
})
.catch((err) => {
  console.log("Error occurred while converting the PDF document:", err);
})

Convert_PDF_to_JPG_in_NodeJs.md

You can convert PDF file to JPG image file programmatically on the cloud. In this article, you will learn how to convert PDF to JPG format in Node.js using REST API.

The following topics are covered in this article:

1. PDF to Image Converter REST API and Node.js SDK
2. How to Convert PDF to JPG format using REST API in Node.js
3. PDF to JPG Conversion using Advanced Options
4. Convert PDF to JPG without using Cloud Storage
5. Convert PDF to JPG and Add Watermark

Convert_PDF_to_JPG_in_NodeJs_with_Watermark.js

// How to Convert PDF to JPG file image with watermark. 
const convertwatermark = async () => {
  // api initialization
  const convertApi = groupdocs_conversion_cloud.ConvertApi.fromKeys(clientId, clientSecret);
  // define convert settings
  const settings = new groupdocs_conversion_cloud.ConvertSettings();
  settings.storageName = myStorage;
  settings.filePath = "nodejs-testing/sample-file.pdf";
  settings.format = "jpg";
  settings.outputPath = "nodejs-testing/sample-file.jpg";

  // define watermark options
  let watermark = new groupdocs_conversion_cloud.WatermarkOptions();
  watermark.text = "This is a Sample watermark";
  watermark.color = "Red";
  watermark.width = 250;
  watermark.height = 300;
  watermark.top = 150;
  watermark.left = 300;
  watermark.rotationAngle = 45;
  watermark.bold = true;
  watermark.background = false;

  // define PDF convert options
  let convertOptions = new groupdocs_conversion_cloud.JpgConvertOptions()
  convertOptions.watermarkOptions = watermark;

  settings.convertOptions = convertOptions;

  try {
    // Create convert document request
    const request = new groupdocs_conversion_cloud.ConvertDocumentRequest(settings);
    await convertApi.convertDocument(request);
  }
  catch (err) {
    throw err;
  }
}

convertwatermark()
.then(() => {
  console.log("watermark added to converted PDF to JPG image.");
})
.catch((err) => {
  console.log("Error occurred while converting the PDF document:", err);
})

Convert_PDF_to_JPG_NodeJs_using_AdvancedOptions.js

// How to turn PDF to JPG using Advanced Options
const convert_options = async () => {
  const convertApi = groupdocs_conversion_cloud.ConvertApi.fromKeys(clientId, clientSecret);

  const settings = new groupdocs_conversion_cloud.ConvertSettings();
  settings.storageName = myStorage;
  settings.filePath = "nodejs-testing/sample-file.pdf";
  settings.format = "jpg";
  
  convertOptions = new groupdocs_conversion_cloud.JpgConvertOptions()
  convertOptions.grayscale = true;
  convertOptions.fromPage = 1;
  convertOptions.pagesCount = 1;
  convertOptions.quality = 100;
  convertOptions.rotateAngle = 90;
  convertOptions.usePdf = false;

  settings.convertOptions = convertOptions;
  settings.outputPath = "nodejs-testing/sample-file.jpg";

  try {
    // Create convert document request
    const request = new groupdocs_conversion_cloud.ConvertDocumentRequest(settings);
    await convertApi.convertDocument(request);
  }
  catch (err) {
    throw err;
  }
}

convert_options()
.then(() => {
  console.log("Converted PDF to JPG image with advanced options.");
})
.catch((err) => {
  console.log("Error occurred while converting the PDF file:", err);
})

ConvertDirectly_PDF_to_JPG_in_NodeJs.js

// How to Convert PDF to JPG without using Cloud Storage
const convertdirect = async () => {
  // api initialization
  const convertApi = groupdocs_conversion_cloud.ConvertApi.fromKeys(clientId, clientSecret);
  // input file
  let file = fs.readFileSync('H:\\groupdocs-cloud-data\\sample-file.pdf');

  try {
    // Create convert document request
    const request = new groupdocs_conversion_cloud.ConvertDocumentDirectRequest("jpg", file);
    // convert document
    let result = await convertApi.convertDocumentDirect(request);
    // save to the local path
    fs.writeFile("H:\\groupdocs-cloud-data\\sample-file.jpg", result, "binary", function (err) { });
  }
  catch (err) {
    throw err;
  }
}

convertdirect()
.then(() => {
  console.log("Directly converted PDF to JPG file format.");
})
.catch((err) => {
  console.log("Error occurred while directly converting the PDF file:", err);
})

Utils_to_Convert_PDF_to_JPG_in_NodeJs_Configurations.js

# Import Node.js SDK in your node application from http://api.groupdocs.cloud
global.groupdocs_conversion_cloud = require("groupdocs-conversion-cloud");
global.fs = require("fs");

// get clientId and clientSecret from https://dashboard.groupdocs.cloud (free registration is required).
global.clientId = "xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
global.clientSecret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
global.myStorage = "test-internal-storage";
const config = new groupdocs_conversion_cloud.Configuration(clientId, clientSecret);
config.apiBaseUrl = "https://api.groupdocs.cloud";