Compress image file from AsyncFileUpload

Question

Is it possible to compress images upon upload directly from AsyncFileUpload ? If yes, can you guide me how?

For example: I have a user that uploads an image .jpeg with size 1200x1600 (5MB) and I want to compress it into a 600x800 (1MP~2MB) file. As much as possible I have to do this on client side just before I upload it to server.

Thank you.

Answer 1

You can take a look at DotNetZip library. I think you will find your solution there.

Answer 2

在HTML5浏览器上，您可以在此答案中使用该解决方案，否则您将不得不要求您的客户端使用插件（ Java ， Flash ， Silverlight ）等。