Page speed performance is of the utmost importance to us here at Refactored. Testing for page speed is part of our regular pre-launch checklist. One of the items that we look for to improve page speed is if things are properly cached. Kentico makes it easy to set up caching in their settings, however the client-side file caching settings only applies to dynamic files that are managed by the Kentico application. You will find that even after configuring these settings, Google PageSpeed Insights still says you need to leverage browser caching. In this post I will show how easy it is to add a few lines of code to the web.config to leverage browser caching in Kentico and ensure that physical files stored on the file system are properly cached.