Extension:APNG

The APNG extension enables animated PNG support in browsers with canvas support.

Firefox and Opera until version 14 support APNG natively. This extension works on Chrome, Safari, Webkit-based Opera and Internet Explorer 9 or higher.

APNG extension is based on David Mzareulyan's apng-canvas library.

Limitation
If you use a different domain for your, the web server is required to send a   header for PNG files.

For example, you can simply add the following lines to the location scope of your Nginx configuration: Internet Explorer 9 is not supported in this case.