The following example adds a menu item named "CompressAndUncompress" to Debug in the menu bar that compresses the Assets folder to UnityAssets.zip and extracts the contents back.

using System.IO;
using Unity.SharpZipLib.Utils;
using UnityEditor;
using UnityEngine;
public static class DebugMenu {
[MenuItem("Debug/CompressAndUncompress")]
static void CompressAndUncompress() {
    //Compress
    string folderToCompress = "Assets";
    string zipPath = Path.Combine(Application.temporaryCachePath, "UnityAssets.zip");
    ZipUtility.CompressFolderToZip(zipPath,null, folderToCompress);
    Debug.Log($"{folderToCompress} folder compressed to: " + zipPath);

    //Uncompress
    string extractPath = Path.Combine(Application.temporaryCachePath, "UnityAssetsExtracted");
    ZipUtility.UncompressFromZip(zipPath, null, extractPath);
    Debug.Log($"Uncompressed to: " + extractPath);
}

}

Methods

CompressFolderToZip(string, string, string)

Creates a zip file on disk containing the contents of the nominated folder.

Declaration

public static void CompressFolderToZip(string outPathname, string password, string folderName)

Parameters

Type	Name	Description
string	outPathname	The path where the created zip file will be saved
string	password	The password required to open the zip file. Set to `null` if not required
string	folderName	The folder to be compressed

Remarks

This method recursively compresses all files within the specified folder. You can specify a password to encrypt the target zip file.

Examples

/// <summary>
/// Compresses all files and directories within the temporary cache path into a zip file, and saves it in the persistent data path.
/// </summary>
/// <param name="outputZipFileName">The name of the output zip file, with its extension</param>
/// <returns>The full file path to the created zip archive in the persistent data directory.</returns>
private string CompressTemporaryCacheToPersistentData(string outputZipFileName) {
    string outputZipPath = Path.Combine(Application.persistentDataPath, outputZipFileName);
    ZipUtility.CompressFolderToZip(outputZipPath,null, Application.temporaryCachePath);
    return outputZipPath;
}

UncompressFromZip(string, string, string)

Uncompress the contents of a zip file into the specified folder.

Declaration

public static void UncompressFromZip(string archivePath, string password, string outFolder)

Parameters

Type	Name	Description
string	archivePath	The path to the zip file to be extracted
string	password	The password required to open the zip file. Set to `null` if the zip file is not encrypted
string	outFolder	The output folder where the contents will be extracted

Remarks

If the output folder already exists, its contents will be deleted before the extraction.

Examples

/// <summary>
/// Extracts the contents of a specified zip file from the persistent data path to a designated folder within the temporary cache directory.
/// </summary>
/// <param name="persistentDataZipFileName">The name of the zip file, with extension, located in the persistent data directory</param>
/// <param name="tempCacheFolderName">The name of the folder within the temporary cache where the zip file's contents will be extracted</param>
/// <returns>The full file path to the root folder containing the extracted files in the temporary cache directory.</returns>
private string ExtractPersistentDataZipToTemporaryCache(string persistentDataZipFileName, string tempCacheFolderName) {

    string zipPath = Path.Combine(Application.persistentDataPath, persistentDataZipFileName);
    string extractedFilesRoot = Path.Combine(Application.temporaryCachePath, tempCacheFolderName);
    ZipUtility.UncompressFromZip(zipPath, null, extractedFilesRoot);
    return extractedFilesRoot;
}