Google Chrome Extensions are starting to really come into their own. The developer documentation is now up and mostly complete. Its a lot easier to create a Google Chrome Extension since we released our first couple. The main beauty, though is how easy it is now to see what is ticking behind an extension. Should you want to modify an existing extension or see how it functions, it’s simple to do. The Google Chrome Extension file type is CRX. It is essentially a compression format. So if you want to see what is behind an extension, the scripts and the code, just change the file-type from “CRX” to “ZIP” . Unzip the file and you will get all the info you need. This way you can see the guts, learn how to write an extension yourself, or modify it for your own needs. The you can pack it back up with Chrome’s internal tools which automatically create the file back into CRX. Installing it just requires a click. We have received several questions about our Ad-block Extension, and this is the way you can modify it to your liking. Please note to work on Google Chrome extensions you are required to be on the DEV build channel.