A Javascript implementation of zip for nodejs. Allows user to create or extract zip files both in memory or to/from disk

ADM-ZIP for NodeJS

ADM-ZIP is a pure JavaScript implementation for zip data compression for NodeJS.


With npm do:

$ npm install adm-zip

The library allows you to:

  • decompress zip files directly to disk or in memory buffers
  • compress files and store them to disk in .zip format or in compressed buffers
  • update content of/add new/delete files from an existing .zip


There are no other nodeJS libraries that ADM-ZIP is dependent of


    var AdmZip = require('adm-zip');
    // reading archives 
    var zip = new AdmZip("./");
    var zipEntries = zip.getEntries(); // an array of ZipEntry records 
    zipEntries.forEach(function(zipEntry) {
        console.log(zipEntry.toString()); // outputs zip entries information 
        if (zipEntry.entryName == "my_file.txt") {
    // outputs the content of some_folder/my_file.txt 
    // extracts the specified file to the specified location 
    zip.extractEntryTo(/*entry name*/"some_folder/my_file.txt", /*target path*/"/home/me/tempfolder", /*maintainEntryPath*/false, /*overwrite*/true);
    // extracts everything 
    zip.extractAllTo(/*target path*/"/home/me/zipcontent/", /*overwrite*/true);
    // creating archives 
    var zip = new AdmZip();
    // add file directly 
    zip.addFile("test.txt", new Buffer("inner content of the file"), "entry comment goes here");
    // add local file 
    // get everything as a buffer 
    var willSendthis = zip.toBuffer();
    // or write everything to disk 
    zip.writeZip(/*target file name*/"/home/me/");
    // ... more examples in the wiki 

For more detailed information please check out the wiki.