The Remove Query Strings From Static Resources WordPress Plugin will increase your WordPress page speed grades significant.
Enabling public caching in the HTTP headers for static resources allows the browser to download resources from a nearby proxy server rather than from a remote origin server.
Resources and links with a "?" or "&" in the URL are not cached by some proxy caching servers. Removing the query string and encode the parameters into the URL will increase your WordPress site performance significant.
Most proxies do not cache resources with a "?" or "&" in their URL even if a Cache-control: public header is present in the response. To enable proxy caching for these resources, you will have to remove query strings from references to static resources, and instead encode the parameters into the file names themselves.
With our Remove Query Strings From Static Resources WordPress Plugin you don't need to edit or add any complicated code into your functions.php file or editing your .htaccess file. Just install this plugin, activate it and all the query strings from the static resources will be gone from your WordPress site.
With the Remove Query Strings From Static Resources WordPress Plugin you will immediately see an improvement in the results for your WordPress site, just remember to clear your cache before testing again.