How to tell if Proguard has done its job

Question

I downloaded proguard encapsulated in a zip file and unpacked it onto my hard disk. I did not install it in any way (because I didn\'t know how). I then added

Answer 1

Normally the size will indicate whether ProGuard has worked but you can :-

1. Use Dex2Jar to convert the apk to a jar file
2. Open the resulting Jar file with Jd-Gui to view the code it contains