All browsers work hard to provide a fast page loading speed. They do this by loading files into the browser’s cache so they can be displayed quickly rather than having to pull every single file from a server. It means next time you visit that particular site the cached files will cut down the page load time.
Often when there are problems or changes are not being displayed you are asked to clear your cache. This is so that if a file has been changed, the cache will be updated with the new file.
First click on Safari menu in menu bar
Click on Preferences…
Click on Advanced
Tick on Show Develop menu in menu bar
Click on Develop menu in menu bar
Click on Empty cache…
Close Safari web browser and open Safari web browser again.
Usually a “force refresh” is enough. You can force refresh your browser by using the following key combination:
On Apple: CMD + R
This method only works on old versions of Safari 2 on OS X 10.4 and previous versions, and is not recommended as it may potentially cause system instability