SPEED: What does ‘remove query strings from static resources’ mean?

A query string looks a bit like this: kate.com.au?search=bacon When talking about resources, in some cases they are needed for anything dynamic. One solution could be to install a caching plugin, but it’s best to chat to a developer and get them to confirm what’s what. Often, query strings are generated by the CMS or a plugin and are simply impossible to fix.