Node.js zlib.createBrotliDecompress() Method

Last Updated : 28 Apr, 2025

The zlib.createBrotliDecompress() method is an inbuilt application programming interface of the Zlib module which is used to create a new BrotliDecompress object. 

Syntax:

zlib.createBrotliDecompress( options )

Parameters: This method accepts single parameter options which is an optional parameter that holds the zlib options. 

Return Value: It returns a new BrotliDecompress object. 

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

 Example 1: 

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

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

// Calling brotliCompress function to compress data
zlib.brotliCompress('Nidhi', function (err, data) {
    if (err) {
        return console.log('err', err);
    }

    // Calling createBrotliDecompress method
    // to decompress the data again
    let gunzip = zlib.createBrotliDecompress();
    gunzip.write(data);
    gunzip.on('data', function (data) {
        console.log(data.toString());
    });
});

Output:

Nidhi

Example 2: 

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

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

// Calling brotliCompress function to compress data
zlib.brotliCompress('CS-Portal!', function (err, data) {
    if (err) {
        return console.log('err', err);
    }

    // Calling createBrotliDecompress method
    // to decompress the data again
    let gunzip = zlib.createBrotliDecompress();
    gunzip.write(data);
    gunzip.on('data', function (data) {
        console.log(data.toString('base64'));
    });
});

Output:

Q1MtUG9ydGFsIQ==

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

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