How to optimize PDF from file (node for PDF optimization API in JavaScript using PDF.co Web API

How to optimize PDF from file (node for PDF optimization API in JavaScript: Step By Step Tutorial

ByteScout tutorials explain the code material for beginners and advanced programmers who are using JavaScript. PDF.co Web API was made to help with PDF optimization API in JavaScript. PDF.co Web API is the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.

JavaScript code samples for JavaScript developers help to speed up the application’s code writing when using PDF.co Web API. For implimentation of this functionality, please copy and paste code below into your app using code editor. Then compile and run your app. Further enhancement of the code will make it more vigorous.

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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OptimizePdfFromFile.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"; // PDF document password. Leave empty for unprotected documents. const Password = ""; // Destination PDF file name const DestinationFile = "./result.pdf"; // Prepare URL for `Optimize PDF` API endpoint var query = `https://api.pdf.co/v1/pdf/optimize`; let reqOptions = { uri: query, headers: { "x-api-key": API_KEY }, formData: { name: path.basename(DestinationFile), password: Password, 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 PDF file var file = fs.createWriteStream(DestinationFile); https.get(data.url, (response2) => { response2.pipe(file) .on("close", () => { console.log(`Generated PDF file saved as "${DestinationFile}" file.`); }); }); } else { // Service reported error console.log("Error: " + data.message); } });

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