Juicer supports so-called cache busters. A cache buster is a pattern in a path whose only purpose is to “trick” browsers to redownload a file when it has changed in cases where a far future expires header is used. There are three types of cache busters. Soft cache busters (the default) add a parameter to the URL, like so: assets/images/1.png?jcb=1234567890, ie the letters “jcb” (as in Juicer Cache

