Win7 Modifying incoming HTTP packet from specific url automatically

Question

Is there an application that can listen in on my PCs http traffic (Preferably process specific), and modify packets that were requested from a certain url ?

So let's say everytime I request http://example.tld/test.html it would replace any occurence of let's say "i" with "I", it's a simple example but still it's an example

Thanks for your time, Xeross

Answer 1

You may be able to achieve what you desire using Fiddler which describes itself as a "Web Debugging Proxy". I seem to remember that it supports scripting such that you can modify traffic en-route.