Node.js zlib.createUnzip() Method Last Updated : 28 Apr, 2025 Suggest changes Share Like Article Like Report The zlib.createUnzip() method is an inbuilt application programming interface of the Zlib module which is used to create a new Unzip object. Syntax: zlib.createUnzip( options ) Parameters: This method accepts single parameter options which is an optional parameter that holds the zlib options. Return Value: It returns a new Unzip object. The below examples illustrate the use of zlib.createUnzip() method in Node.js: Example 1: In this example, we will see the use of zlib.createUnzip() method. javascript // Node.js program to demonstrate the // createUnzip() method // Including zlib module const zlib = require('zlib'); // Calling gzip function to compress data zlib.gzip('Nidhi Singh', function (err, data) { if (err) { return console.log('err', err); } // Calling createUnzip method // to decompress the data again const unzip = zlib.createUnzip(); unzip.write(data); unzip.on('data', function (data) { console.log(data.toString()); }); }); Output: Nidhi Singh Example 2: In this example, we will see the use of the createUnzip() method. javascript // Node.js program to demonstrate the // createUnzip() method // Including zlib module const zlib = require('zlib'); // Calling gzip function to compress data zlib.gzip('Nidhi Singh', function (err, data) { if (err) { return console.log('err', err); } // Calling createUnzip method // to decompress the data again const unzip = zlib.createUnzip(); unzip.write(data); unzip.on('data', function (data) { console.log(data.toString('hex')); }); }); Output: 4e696468692053696e6768 Reference: https://nodejs.org/api/zlib.html#zlib_zlib_createunzip_options N nidhi1352singh Follow Article Tags : Web Technologies Node.js Node.js-Zlib-module Explore Node.js Tutorial 3 min read Introduction & Installation NodeJS Introduction 3 min read Node.js Roadmap: A Complete Guide 6 min read How to Install Node.js on Linux 6 min read How to Install Node.js on Windows 5 min read How to Install NodeJS on MacOS 6 min read Node.js vs Browser - Top Differences That Every Developer Should Know 6 min read NodeJS REPL (READ, EVAL, PRINT, LOOP) 4 min read Explain V8 engine in Node.js 7 min read Node.js Web Application Architecture 3 min read NodeJS Event Loop 5 min read Node.js Modules , Buffer & StreamsNodeJS Modules 5 min read What are Buffers in Node.js ? 4 min read Node.js Streams 4 min read Node.js Asynchronous ProgrammingAsync Await in Node.js 3 min read Promises in NodeJS 7 min read How to Handle Errors in Node.js ? 4 min read Exception Handling in Node.js 3 min read Node.js NPMNodeJS NPM 6 min read Steps to Create and Publish NPM packages 7 min read Introduction to NPM scripts 2 min read Node.js package.json 4 min read What is package-lock.json ? 3 min read Node.js Deployments & CommunicationNode Debugging 2 min read How to Perform Testing in Node.js ? 2 min read Unit Testing of Node.js Application 5 min read NODE_ENV Variables and How to Use Them ? 2 min read Difference Between Development and Production in Node.js 3 min read Best Security Practices in Node.js 4 min read Deploying Node.js Applications 5 min read How to Build a Microservices Architecture with NodeJS 3 min read Node.js with WebAssembly 3 min read Resources & ToolsNode.js Web Server 6 min read Node Exercises, Practice Questions and Solutions 4 min read Node.js Projects 9 min read NodeJS Interview Questions and Answers 15+ min read My Profile ${profileImgHtml} My Profile Edit Profile My Courses Join Community Transactions Logout Like