Fine Uploader 3.8 Released

Update: August 30, 2013 – 3.8.2 Hotfix Release

This hotfix release addresses the following issue/workflows:

  • ActiveX automatic fallback for IE users with native XHR disabled (delete file feature and upload-to-S3). (#977)
  • AWS object key names with the following characters will fail when uploaded: ! ‘ ( ) * (#979).

Update: August 29, 2013 – 3.8.1 Hotfix Release

This hotfix release addresses the following defects:

  • IE9 and older direct to S3 uploading fails for keys containing spaces (#970)
  • Mismatched key or bucket names in the response to a completed multipart upload will not fail the upload (#972)
  • AWS encodes non-ASCII key names as question marks (#973)


Fine Uploader 3.8 is the first version to support uploading files directly to Amazon’s Simple Storage Service (S3).

Features & Enhancements

Bugs Fixed

  • Fix error logging when parsing iframe content (#929)
  • CORS ajax request errors are ignored in IE8 & IE9 (#943)

Amazon S3 Uploads

3.8 allows you to easily upload files directly to Amazon S3, bypassing your origin server.  All existing Fine Uploader features in all browsers are supported when dealing with S3.  Some server-side intervention is required (such as to sign requests before they are sent to S3), but this integration is quite simple.

For more information on this feature, and a tutorial on how to implement S3 support, read the associated blog post.


We spent some time during this release making the documentation even better, and hope that you find it useful. If you encounter anything broken, or if you have any ideas on improvements for the documentation, then feel free to create an issue on GitHub and we will take it into consideration almost immediately.

What’s Up Next?

Features for the next release are yet-to-be-determined. Planning for the next release is underway, and we will update this post once our planning sessions are complete. If you have any opinions on features that you think would continue to make Fine Uploader the best, then please post a feature request on the issue tracker.

Supports Amazon S3 opens the door for the possibility of uploading directly to other cloud-storage providers such as Microsoft’s Azure, …

We will continue testing Fine Uploader on a variety of different workflows on the latest and greatest browsers and devices. SauceLabs continues to act as our multi-browser testing platform, and writing functional tests for Fine Uploader is a priority for the next release.

Let us know if we can do anything to improve your uploading experience!

– Ray Nicholus, Mark Feltner, and the rest of the team @ Widen