Is it possible to access Google Chrome\'s cache from within an extension?
I\'d like to write an extension that loads a cached version of a page when the online one c
Unfortunately, I'm 99% sure that this is impossible without using an NPAPI in your extension.
Chrome extensions are sandboxed to their own process, and can only access files within the extension's folder.
There is some support for things like chrome://favicon/. But that's about it, at least for now.
Source (Google Chrome Extensions Reference)