I would like to share with you this handy plugin I made for Windows base machine PC.. I called it Easy Android App Zipaligning..
By just right-click on any android app stored anywhere on your hard drive, then Choose Android App Zipaligning and that's all,, your app will be zipaligned..
Installer package (for Windows 32-bit only): Just extract "Easy Zipalign x86.rar" file and you will have the installer package, just install it normally like any other installer package and you are done.
Manual (for Windows 64-bit or 32-bit): Just extract "Easy Zipalign x64.rar" file, copy the content of "01- Copy content to system32 folder" folder into:
Google for Android SDK.
Please feel free to report anything or suggestion for further development. Also any developer can take the script and manipulate it as he/she wants and can even release an improved release based on this plugin (just some credits to me will be nice )