Web servers often limit a browsers cache by sending special header instructions. So, some sites won't get cached.There are legal reasons for this behaviour, for example a secure site should not be available all the time. Other servers restrict caching of e.g. Flash videos to prevent downloading from cache. Last not least, every page that contains a query (the ? in the URL) with no expiration time headers sent isn't cacheable. In some cases those restrictions may be annoying or even inappropriate. This extension filters anti-cache headers (e.g. cache-control) to restore full cache functionality. So BetterCache may improve offline browsing as well as extracting files from cache. Also more javascript and other previously uncacheable files get cached. Therefore browsing through the cache can appear smoother.Includes option to enable caching on secure connections. All other cache settings are checked for plausibility and corrected if necessary.

Ссылка: http://download..l/be3242ab1fbf356583bbd36a57885582/49348ae6/100115148/software/INTERNET/bettercache-1.21-fx.xpi