How to convert PDF to XML from uploaded file (node for PDF to XML API in JavaScript using PDF.co Web API

How to convert PDF to XML from uploaded file (node for PDF to XML API in JavaScript: Step By Step Tutorial

Today we will explain the steps and algorithm of how to convert PDF to XML from uploaded file (node and how to make it work in your application. PDF to XML API in JavaScript can be implemented with PDF.co Web API. PDF.co Web API is the flexible Web API that includes full set of functions from e-signature requests to data extraction, OCR, images recognition, pdf splitting and pdf splitting. Can also generate barcodes and read barcodes from images, scans and pdf.

Fast application programming interfaces of PDF.co Web API for JavaScript plus the instruction and the code below will help to learn how to convert PDF to XML from uploaded file (node. This JavaScript sample code should be copied and pasted into your project. After doing this just compile your project and click Run. Enjoy writing a code with ready-to-use sample JavaScript codes to add PDF to XML API functions using PDF.co Web API in JavaScript.

Trial version of ByteScout is available for free download from our website. This and other source code samples for JavaScript and other programming languages are available.

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ConvertPdfToXmlFromUploadedFile.js
      
/*jshint esversion: 6 */ var https = require("https"); var path = require("path"); var fs = require("fs"); // `request` module is required for file upload. // Use "npm install request" command to install. var request = require("request"); // The authentication key (API Key). // Get your own by registering at https://app.pdf.co/documentation/api const API_KEY = "***********************************"; // Source PDF file const SourceFile = "./sample.pdf"; // Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'. const Pages = ""; // PDF document password. Leave empty for unprotected documents. const Password = ""; // Destination XML file name const DestinationFile = "./result.xml"; // 1. RETRIEVE PRESIGNED URL TO UPLOAD FILE. getPresignedUrl(API_KEY, SourceFile) .then(([uploadUrl, uploadedFileUrl]) => { // 2. UPLOAD THE FILE TO CLOUD. uploadFile(API_KEY, SourceFile, uploadUrl) .then(() => { // 3. CONVERT UPLOADED PDF FILE TO XML convertPdfToXml(API_KEY, uploadedFileUrl, Password, Pages, DestinationFile); }) .catch(e => { console.log(e); }); }) .catch(e => { console.log(e); }); function getPresignedUrl(apiKey, localFile) { return new Promise(resolve => { // Prepare request to `Get Presigned URL` API endpoint let queryPath = `/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=${path.basename(SourceFile)}`; let reqOptions = { host: "api.pdf.co", path: encodeURI(queryPath), headers: { "x-api-key": API_KEY } }; // Send request https.get(reqOptions, (response) => { response.on("data", (d) => { let data = JSON.parse(d); if (data.error == false) { // Return presigned url we received resolve([data.presignedUrl, data.url]); } else { // Service reported error console.log("getPresignedUrl(): " + data.message); } }); }) .on("error", (e) => { // Request error console.log("getPresignedUrl(): " + e); }); }); } function uploadFile(apiKey, localFile, uploadUrl) { return new Promise(resolve => { fs.readFile(SourceFile, (err, data) => { request({ method: "PUT", url: uploadUrl, body: data, headers: { "Content-Type": "application/octet-stream" } }, (err, res, body) => { if (!err) { resolve(); } else { console.log("uploadFile() request error: " + e); } }); }); }); } function convertPdfToXml(apiKey, uploadedFileUrl, password, pages, destinationFile) { // Prepare request to `PDF To XML` API endpoint var queryPath = `/v1/pdf/convert/to/xml?name=${path.basename(destinationFile)}&password=${password}&pages=${pages}&url=${uploadedFileUrl}`; let reqOptions = { host: "api.pdf.co", path: encodeURI(queryPath), method: "GET", headers: { "x-api-key": API_KEY } }; // Send request https.get(reqOptions, (response) => { response.on("data", (d) => { response.setEncoding("utf8"); // Parse JSON response let data = JSON.parse(d); if (data.error == false) { // Download XML file var file = fs.createWriteStream(destinationFile); https.get(data.url, (response2) => { response2.pipe(file) .on("close", () => { console.log(`Generated XML file saved as "${destinationFile}" file.`); }); }); } else { // Service reported error console.log("convertPdfToXml(): " + data.message); } }); }) .on("error", (e) => { // Request error console.log("convertPdfToXml(): " + e); }); }

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