Which browsers are supported by Uploadcare widget?

The widget supports all modern browsers and some versions behind.

To quote our documentation :

Our widget should work perfectly in a couple of the latest versions of major desktop browsers: Internet Explorer, Edge, Firefox, Google Chrome, Safari, and Opera. It is most likely to run well in older versions of major browser too, except for Internet Explorer < 10.

If you need to support of old browsers and IE8 too, you might use v2 of widget.