Servage Magazine

The JavaScript library JSZip provides you with the ability to generate .zip files dynamically. This way you can send lots of data to a user in a convenient and bandwidth-saving way. With JavaScript becoming more and more powerful, and the amount of data handled by JavaScripts increasing every day, this is a great way to communicate with the user. Most users generally accept zip files from trusted sites – assuming that your users trust your site ;-)

It’s really easy to create a .zip file. Check out this sample code:

var zip = new JSZip();
zip.add("Hello.txt", "Hello World\n");
img = zip.folder("images");
img.add("smile.gif", imgData, {base64: true});
content = zip.generate();
location.href="data:application/zip;base64,"+content;

Creating zip files in the browser with JavaScript also removes some of the resource-consumption from your server.

Read more and download the library from JSZip.