Highlight Text in PDF using REST API in Node.js

HighlightTextInPDF_NodeJs.md

Learn how to highlight text in PDF using REST API in Node.js: https://blog.groupdocs.cloud/2022/02/08/highlight-text-in-pdf-using-rest-api-in-node-js/

The following topics shall be covered in this article:

1. PDF Text Highlighter REST API and Node.js SDK
2. Highlight Text in PDF using REST API in Node.js

HighlightTextInPDF_NodeJs_AddHighlightAnnotation.js

// This code example demonstrates how to add highlight annotations to PDF file.
// Initialize api instance
let annotateApi = groupdocs_annotation_cloud.AnnotateApi.fromKeys(clientId, clientSecret);

// Define annotation
let a1 = new groupdocs_annotation_cloud.AnnotationInfo();

// Point 1
let p1 = new groupdocs_annotation_cloud.Point();
p1.x = 30;
p1.y = 710;

// Point 2
let p2 = new groupdocs_annotation_cloud.Point();
p2.x = 460;
p2.y = 710;

// Point 3
let p3 = new groupdocs_annotation_cloud.Point();
p3.x = 30;
p3.y = 690;

// Point 4
let p4 = new groupdocs_annotation_cloud.Point();
p4.x = 460;
p4.y = 690;

// Add points
a1.points = [p1, p2, p3, p4];

// Background color
a1.backgroundColor = 3329434;

// Type
a1.type = groupdocs_annotation_cloud.AnnotationInfo.TypeEnum.TextHighlight;

// Input file
let fileInfo = new groupdocs_annotation_cloud.FileInfo();
fileInfo.filePath = "sample.pdf";

// Define AnnotateOptions
let options = new groupdocs_annotation_cloud.AnnotateOptions();
options.fileInfo = fileInfo;

// Assign annotation
options.annotations = [a1];

// Output file path
options.outputPath = "output.pdf";

// Create Annotate request
let request = new groupdocs_annotation_cloud.AnnotateRequest(options);

// Annotate
let result = await annotateApi.annotate(request);

// Done
console.log("AddAreaAnnotation: Area Annotation added: " + result.href);

HighlightTextInPDF_NodeJs_Configurations.js

// This code example demonstrates how to add your client Id and Secret in the code.
global.clientId = "659fe7da-715b-4744-a0f7-cf469a392b73";
global.clientSecret = "b377c36cfa28fa69960ebac6b6e36421";
global.myStorage = "";

const configuration = new groupdocs_annotation_cloud.Configuration(clientId, clientSecret);
configuration.apiBaseUrl = "https://api.groupdocs.cloud";

HighlightTextInPDF_NodeJs_Download.js

// This code example demostrates how to download a PDF file from the cloud.
// Construct FileApi
var fileApi = new groupdocs_annotation_cloud.FileApi(configuration);

// Create download file request
let request = new groupdocs_annotation_cloud.DownloadFileRequest("output.pdf", myStorage);

// Download file
let response = await fileApi.downloadFile(request);

// Save file in your working directory
fs.writeFile("C:\\Files\\Annotation\\output.pdf", response, "binary", function (err) { });

HighlightTextInPDF_NodeJs_Upload.js

// This code example demonstrates how to upload a PDF file to the cloud.
// Initialize api instance
var fileApi = new groupdocs_annotation_cloud.FileApi(configuration);

// Open file in IOStream from local/disc.
var resourcesFolder = 'C:\\Files\\Annotation\\sample.pdf';

// Read the file
fs.readFile(resourcesFolder, (err, fileStream) => {
  // Upload file request
  var request = new groupdocs_annotation_cloud.UploadFileRequest("sample.pdf", fileStream, myStorage);
  // Upload file
  fileApi.uploadFile(request);
});