Click the wrench icon at the top right corner of the screen and go to Tools → Clear Browsing Data.
Select the items you want to delete, choose the period for which you want to delete them and click Clear Browsing Data.
Open Firefox and go to History → Clear Recent History.
Choose the time range and the items you wish to clear and click Clear Now.
Open Internet Explorer 6 and go to Tools > Internet Options > General.
Click Delete Files.
Check the box next to Delete all offline content in the window that opens and click OK.
Open Internet Explorer 7 and go to Tools > Internet Options > General.
Under Browsing history click Delete.
Choose which items you wish to delete and click the Delete button next to each item to delete it.
In Internet Explorer 9 go to Tools > Safety > Delete browsing history.
Then untick the option for Preserve Favorites website data, tick the options for Temporary Internet Files and Cookies and click Delete.
Open Opera and go to Tools > Delete Private Data.
Choose which items you wish to delete and click Delete.
Open Safari and go to Safari > Empty Cache.
Click Empty in the window that opens to clear the cache.
Open Safari and go to Safari > Clear history and Website Data.
Click Clear All in the window that opens to clear the cache.