The zlib module in Node.js is used to compress and decompress data using algorithms like Gzip and Deflate. It helps reduce data size, improving performance and saving bandwidth.
Supports compression and decompression of data streams and buffers.
Uses Gzip, Deflate, and Inflate algorithms for efficient data compression.
Built on the zlib C library, providing reliable and high-performance compression.
Example: Compress a file (demofile.txt) into a gzip file (mygzipfile.txt.gz).
var fs = require('fs');
var zlib = require('zlib');
var x = fs.createReadStream('demofile.txt');
var y = fs.createWriteStream('mygzipfile.txt.gz');
var gzip = zlib.createGzip();
x.pipe(gzip).pipe(y);
Importing Module
To use the zlib module in your Node.js application, simply import it as below:
const zlib = require('zlib');
Features
The zlib module provides multiple functionalities for efficient data compression and decompression in Node.js applications.
Compression and Decompression: Provides APIs to compress and decompress data using Gzip and Deflate algorithms.
Stream Handling: Supports efficient compression and decompression of data streams.
Buffer Operations: Allows compression and decompression of buffer data.
Custom Compression Levels: Enables configuration of compression levels for speed or efficiency.
Zlib Methods
The zlib module provides several methods for compression and decompression.
zlib.gzip():zlib.gzip() method compresses data using the Gzip compression algorithm.
