How to convert PDF to PNG from URL (node for PDF to image API in JavaScript with PDF.co Web API

How to convert PDF to PNG from URL (node in JavaScript with easy ByteScout code samples to make PDF to image API. Step-by-step tutorial

Writing of the code to convert PDF to PNG from URL (node in JavaScript can be done by developers of any level using PDF.co Web API. PDF.co Web API was made to help with PDF to image API in JavaScript. 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.

JavaScript code samples for JavaScript developers help to speed up the application’s code writing when using PDF.co Web API. Open your JavaScript project and simply copy & paste the code and then run your app! Enjoy writing a code with ready-to-use sample JavaScript codes to add PDF to image API functions using PDF.co Web API in JavaScript.

PDF.co Web API – free trial version is on available our website. Also, there are other code samples to help you with your JavaScript application included into trial version.

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ConvertPdfToPngFromUrl.js
      
var https = require("https"); 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 SourceFileUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-to-image/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 = ""; // Prepare request to `PDF To PNG` API endpoint var queryPath = `/v1/pdf/convert/to/png?password=${Password}&pages=${Pages}&url=${SourceFileUrl}&async=True`; var reqOptions = { host: "api.pdf.co", path: encodeURI(queryPath), headers: { "x-api-key": API_KEY } }; // Send request https.get(reqOptions, (response) => { response.on("data", (d) => { // Parse JSON response var data = JSON.parse(d); if (data.error == false) { console.log(`Job #${data.jobId} has been created!`); checkIfJobIsCompleted(data.jobId, data.url); } else { // Service reported error console.log(data.message); } }); }).on("error", (e) => { // Request error console.error(e); }); function checkIfJobIsCompleted(jobId, resultFileUrlJson) { let queryPath = `/v1/job/check?jobid=${jobId}`; let reqOptions = { host: "api.pdf.co", path: encodeURI(queryPath), method: "GET", headers: { "x-api-key": API_KEY } }; https.get(reqOptions, (response) => { response.on("data", (d) => { response.setEncoding("utf8"); // Parse JSON response let data = JSON.parse(d); console.log(`Checking Job #${jobId}, Status: ${data.status}, Time: ${new Date().toLocaleString()}`); if (data.status == "working") { // Check again after 3 seconds setTimeout(function(){checkIfJobIsCompleted(jobId, resultFileUrlJson)} , 3000); } else if (data.status == "success") { request({ method: 'GET', uri: resultFileUrlJson, gzip: true }, function (error, response, body) { // Parse JSON response let respJsonFileArray = JSON.parse(body); let page = 1; respJsonFileArray.forEach((url) => { var localFileName = `./page${page}.png`; var file = fs.createWriteStream(localFileName); https.get(url, (response2) => { response2.pipe(file) .on("close", () => { console.log(`Generated PNG file saved as "${localFileName} file."`); }); }); page++; }, this); }); } else { console.log(`Operation ended with status: "${data.status}".`); } }) }); }

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