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+---
+title: "How to write a file / give it to the user"
+layout: default
+section: example
+---
+
+### In the browser
+
+With only javascript, this part won't work in old browsers, including IE < 10.
+For those browsers, you can use a flash polyfill, see below.
+
+You can also see this
+[example]({{site.baseurl}}/documentation/examples/download-zip-file.html).
+
+#### Blob URL / FileSaver
+
+With recent browsers, the easiest way is to use `saveAs` or a polyfill, see
+[FileSaver.js](https://github.com/eligrey/FileSaver.js) :
+
+```js
+var blob = zip.generate({type:"blob"});
+saveAs(blob, "hello.zip");
+```
+
+Under the hood, the polyfill uses the native `saveAs` from the
+[FileSaver](http://www.w3.org/TR/file-writer-api/#the-filesaver-interface) API
+(on Chrome and IE10+) or use a [Blob URL](http://updates.html5rocks.com/2011/08/Downloading-resources-in-HTML5-a-download)
+(on Firefox).
+
+
+#### Data URI
+
+For older browsers that support [data URI](http://caniuse.com/datauri), you can also
+do the following :
+
+```js
+location.href="data:application/zip;base64," + zip.generate({type:"base64"});
+```
+
+The biggest issue here is that the filenames are very awkward, Firefox
+generates filenames such as `a5sZQRsx.zip.part` (see bugs
+[367231](https://bugzilla.mozilla.org/show_bug.cgi?id=367231) and
+[532230](https://bugzilla.mozilla.org/show_bug.cgi?id=532230), and Safari
+isn't much better with just `Unknown`.
+
+Browser support and resulting filename :
+
+Opera  | Firefox | Safari | Chrome | Internet Explorer
+-------|---------|--------|--------|------------------
+"default.zip" | random alphanumeric with ".part" extension | "Unknown" (no extension) | "download.zip" on OSX and Linux, just "download" on Windows | No
+
+#### Downloadify
+
+[Downloadify](https://github.com/dcneiner/downloadify) uses a small Flash SWF
+to download files to a user's computer with a filename that you can choose.
+Doug Neiner has added the `dataType` option to allow you to pass a zip for
+downloading. Follow the [Downloadify demo](http://pixelgraphics.us/downloadify/test.html)
+with the following changes:
+
+```js
+zip = new JSZip();
+zip.file("Hello.", "hello.txt");
+Downloadify.create('downloadify',{
+...
+  data: function(){
+    return zip.generate({type:"base64"});
+  },
+...
+  dataType: 'base64'
+});
+```
+
+<!--
+TODO : send data as GET / POST ?
+-->
+
+#### Deprecated google gears
+
+[Franz Buchinger](http://www.picurl.org/blog/author/franz/) has written a
+brilliant tutorial on [using JSZip with Google Gears](http://www.picurl.org/blog/2009/11/22/creating-zip-archives-with-gears)
+([part 2](http://www.picurl.org/blog/2009/11/29/gearszipper-part2-adding-support-for-real-files-and-canvas-elements/)).
+If you want to let your Gears users download several files at once I really
+recommend having a look at some of his [examples](http://picurl.org/gears/zipper/).
+
+
+
+### In nodejs
+
+JSZip can generate Buffers so you can do the following :
+
+```js
+var fs = require("fs");
+var JSZip = require("jszip");
+
+var zip = new JSZip();
+// zip.file("file", content);
+// ... and other manipulations
+
+var buffer = zip.generate({type:"nodebuffer"});
+
+fs.writeFile("test.zip", buffer, function(err) {
+  if (err) throw err;
+});
+```
+
+