Shortcut to clear your browser cache and cookies.

Instructions for Firefox on a Windows computer

1. Press the following keys at one: [Ctrl], [Shift] and [Delete].
2. A popup opens with the title "Clear recent history."
3. In the dropdown menu, you can define the time range you want to delete the cache. You have the following options: last hour, last two hours, last four hours, today or all.
   To delete all data, select "Everything" from the dropdown-menu...
4. Enable the check boxes for Browsing & Download History, Cookies, and Cache 
5. Click the button OK when you have made your selections.

Instructions for Firefox on a Macintosh computer

1. In the main menu of the browser select "History" and below that the submenu-item "Clear Recent History..."
2. A popup opens. In the drop-down menu, you can define the time range you want to delete the cache. You have the following options: last hour, last two hours, last four hours, today or Everything.
3. To delete all cache data, select "Everything" from the drop-down menu.
4. Afterwards, click on the arrow next to "Details" to show the different possibilities for which data should be deleted. If you want to delete only the cache, then check only the checkbox next to "Cache".
5. With a click on the button "Clear now" you delete the cache.
6. Reload the page afterwards.