GZip compressing HTML, JavaScript, CSS etc. makes the data sent to the browser s

this is fun.

http://tutorials.jenkov.com/java-servlets/gzip-servlet-filter.html

 

GZip HTTP Headers

The browser includes the Accept-Encoding HTTP header in requests sent to an HTTP server (e.g. a Java web server). The content of the Accept-Encoding header tells what content encodings the browser can accept. If that header contains the value gzip in it, the browser can accept GZip compressed content. The server can then GZip compress the content sent back to the browser.

If the content sent back from the server is GZip compressed, the server includes the Content-Encoding HTTP header with the value gzip in the HTTP response. That way the browser knows that the content is GZip compressed.