How to decode viewstate

asp.netviewstate

I need to see the contents of the viewstate of an asp.net page. I looked for a viewstate decoder, found Fridz Onion's ViewState Decoder but it asks for the url of a page to get its viewstate. Since my viewstate is formed after a postback and comes as a result of an operation in an update panel, I cannot provide a url. I need to copy & paste the viewstate string and see what's inside. Is there a tool or a website exist that can help viewing the contents of viewstate?

Best Solution

Here's an online ViewState decoder:

http://ignatu.co.uk/ViewStateDecoder.aspx

Edit: Unfortunatey, the above link is dead - here's another ViewState decoder (from the comments):

http://viewstatedecoder.azurewebsites.net/