Extract or Remove Annotations from PDF using a REST API in Node.js

ExtractRemoveAnnotationsPDF_NodeJs

You can easily extract or remove all the annotations from documents using a REST API in Node.js.
Please follow the steps mentioned below:
1. Upload the PDF file to the Cloud
2. Extract Annotations from PDF Files in Node.js
3. Remove Annotations from PDF Files in Node.js
4. Download the updated file

ExtractRemoveAnnotationsPDF_NodeJs_Configurations.js

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";

ExtractRemoveAnnotationsPDF_NodeJs_Download.js

// construct FileApi
var fileApi = new groupdocs_annotation_cloud.FileApi(configuration);

// create download file request
let request = new groupdocs_annotation_cloud.DownloadFileRequest("Output/output.pdf", myStorage);
let response = await fileApi.downloadFile(request);

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

ExtractRemoveAnnotationsPDF_NodeJs_Extract.js

// initialize api
let annotateApi = groupdocs_annotation_cloud.AnnotateApi.fromKeys(clientId, clientSecret);

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

// create extract request
let request = new groupdocs_annotation_cloud.ExtractRequest(fileInfo);

// extract
let result = await annotateApi.extract(request);
// show results
console.log("GetAnnotations: annotations count = " + result.length);
result.forEach(element => console.log("Annotation ID:" + element.id + " Element Text: " + element.text));

ExtractRemoveAnnotationsPDF_NodeJs_Remove.js

// api initialization
let annotateApi = groupdocs_annotation_cloud.AnnotateApi.fromKeys(clientId, clientSecret);

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

// define remove options
let options = new groupdocs_annotation_cloud.RemoveOptions();
options.fileInfo = fileInfo;
options.annotationIds = [0, 1, 2, 3];
options.outputPath = "Output/output.pdf";

// create remove annotation request
let request = new groupdocs_annotation_cloud.RemoveAnnotationsRequest(options);

// Remove annotations
let result = await annotateApi.removeAnnotations(request);

console.log("DeleteAnnotations: annotations delete: " + result.href);

ExtractRemoveAnnotationsPDF_NodeJs_Upload.js

// api initialization
var fileApi = new groupdocs_annotation_cloud.FileApi(configuration);

// input file
var resourcesFolder = 'C:\\Files\\sample.pdf';

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