Switching to offline mode using Google Chrome
The offline data entry mode is recommended for unreliable internet connections or simply when you have no accessible internet connection. Be aware that you will need an internet connection to switch to offline mode to perform your account's synchronisation. When in offline mode, your computer will automatically synchronize every 5 minutes if you have access to an internet connection; otherwise it will synchronize the next time you are connected to internet.
Changes performed while in offline mode are stored in the internet browser cache. Internet browsers have a limited size capacity so we only recommend using the offline mode for performing data entry. Performing more complex changes in your account (creating databases or reports for instance) might overload the cache or be saved incorrectly.
Enabling offline data entry mode
Coming back to online mode - clearing your browsing data
If you do not want to clear everything then it should suffice to select only Cookies and other site and plugin data and Hosted app data.