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Node.js zlib.gunzipSync() Method

Last Updated : 28 Apr, 2025

The zlib.gunzipSync() method is an inbuilt application programming interface of the Zlib module which is used to decompress a chunk of data with Gunzip. 

Syntax:

zlib.gunzipSync( 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 Gunzip. 

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

Example 1: 

Output:

Nidhi

Example 2: 

Output:

TmlkaGk=

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

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