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

Step By Step Tutorial: how to convert PDF to PNG from file (node for PDF to image API in JavaScript

Writing of the code to convert PDF to PNG from file (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 Rest API that provides set of data extraction functions, tools for documents manipulation, splitting and merging of pdf files. Includes built-in OCR, images recognition, can generate and read barcodes from images, scans and pdf.

The SDK samples like this one below explain how to quickly make your application do PDF to image API in JavaScript with the help of PDF.co Web API. Follow the instruction and copy – paste code for JavaScript into your project’s code editor. Code testing will allow the function to be tested and work properly with your data.

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ConvertPdfToPngFromFile.js
      
/*jshint esversion: 6 */ 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 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 = ""; // Prepare URL for `PDF To PNG` API call var query = `https://api.pdf.co/v1/pdf/convert/to/png`; let reqOptions = { uri: query, headers: { "x-api-key": API_KEY }, formData: { password: Password, pages: Pages, file: fs.createReadStream(SourceFile) } }; // Send request request.post(reqOptions, function (error, response, body) { if (error) { return console.error("Error: ", error); } // Parse JSON response let data = JSON.parse(body); if (data.error == false) { // Download generated PNG files var page = 1; data.urls.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 { // Service reported error console.log("Error: " + data.message); } });

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