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Node.js zlib.inflateSync() Method

Last Updated : 25 Apr, 2025
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The zlib.inflateSync() method is an inbuilt application programming interface of the Zlib module which is used to decompress a chunk of data with Inflate. 

Syntax:

zlib.inflateSync( buffer, options )

Parameters: This method accepts two parameters as mentioned above and described below:

  • buffer: This parameter holds the buffer of type Buffer, TypedArray, DataView, ArrayBuffer, and string.
  • options: This parameter holds the value of the zlib option.

Return Value: It returns the chunk of data with Inflate. 

The below examples illustrate the use of zlib.inflateSync() method in Node.js: 

Example 1: 

javascript 
// Node.js program to demonstrate the    
// zlib.inflateSync() method

// Including zlib module
const zlib = require('zlib');

// Declaring input and assigning
// it a value string
const input = "GeeksforGeeks";

// Calling deflateSync method
const deflated = zlib.deflateSync(input);

// Calling inflateSync method
const inflated = zlib.inflateSync(
    new Buffer.from(deflated)).toString();

console.log(inflated);

Output:

GeeksforGeeks

Example 2: 

javascript 
// Node.js program to demonstrate the    
// zlib.inflateSync() method

// Including zlib module
const zlib = require('zlib');

// Declaring input and assigning
// it a value string
const input = "GeeksforGeeks";

// Calling deflateSync method
const deflated = zlib.deflateSync(input).toString('hex');

// Calling inflateSync method
const inflated = zlib.inflateSync(new Buffer.from(
    deflated, 'hex')).toString('base64');

console.log(inflated);

Output:

R2Vla3Nmb3JHZWVrcw==

Reference: https://nodejs.org/api/zlib.html#zlib_zlib_inflatesync_buffer_options


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Node.js zlib.inflateRaw() Method
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