Download multiple files as a zip or in a folder using Javascript?

Question

Is it possible to download multiple files from an url into one created folder or as a zip?

I currently download a file given a url like so:

var download_url = ""; 
window.location.href = download_url;

If I were to have an array of urls, I could do something like...

for each url in urls
    window.location.href = url;

This works, but will lead to individual downloaded files in the downloads folder. This can be messy.

Is it possible to create and specify which folder to download all of the files or convert all the downloaded files into a zip?

possible duplicate of [Downloading multiple files and zip - Chrome extension](http://stackoverflow.com/questions/14180375/downloading-multiple-files-and-zip-chrome-extension) — Wesley Smith, Mar 06 '15 at 02:09
@DelightedD0D the question you linked is regarding Chrome Extensions and the top rated answer would only work with Chrome — Rohan, Mar 06 '15 at 02:30

score 1 · Answer 1 · edited May 23 '17 at 11:45

1

In modern browsers, you could convert all the downloaded files into a zip with a combination of JSZip (https://stuk.github.io/jszip/) and AJAX blob downloads (Using jQuery's ajax method to retrieve images as a blob), although I expect you will run into performance issues when dealing with large files. Otherwise, it isn't possible to create a folder on the client with browser JS.

edited May 23 '17 at 11:45

Community

1
1

answered Mar 06 '15 at 05:31

David Noël

117
3

score 1 · Answer 2 · answered Jul 16 '20 at 07:56

<!DOCTYPE html>
<html>
    <head><script src="https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/1.3.8/FileSaver.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip/3.5.0/jszip.min.js" type="text/javascript"> </script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip-utils/0.1.0/jszip-utils.js" type="text/javascript"> </script>
</head>
    <body>
    </body>
        <script>
            var zip = new JSZip();
            var count = 0;
            var zipFilename = "zipFilename.zip";
            var urls = [
                'https://avatars2.githubusercontent.com/u/3269942?s=52&v=4',
                'https://avatars2.githubusercontent.com/u/1234650?s=88&u=bcb313dffc1180bf90c818879749c5184e922aa2&v=4',
                'https://avatars0.githubusercontent.com/u/28157230?s=88&u=e9d1130e4fa2760fa2fccf5f1d2f1c03708b0e4d&v=4'
            ];

            var nombre = "Zip_img";
            //The function is called
            compressed_img(urls, nombre);
            function compressed_img(urls, nombre) {
                var zip = new JSZip();
                var count = 0;
                var name = nombre + ".zip";
                urls.forEach(function(url) {
                   JSZipUtils.getBinaryContent(url, function(err, data) {
                     if (err) {
                         throw err;
                     }
                   zip.file(url, data, {
                       binary: true
                   });
                  count++;
                 if (count == urls.length) {
                    zip.generateAsync({
                        type: 'blob'
                    }).then(function(content) {
                        saveAs(content, name);
                    });
                }
            });
        });
    }

</script>

</html>

Download multiple files as a zip or in a folder using Javascript?

2 Answers2