Notes:
If you don't see instructions below for your specific version or browser, search your browser's Help menu for "clear cache". If you're unsure what browser version you're using, from the Help menu, select About [browser name]. In Internet Explorer and Firefox, if you don't see the menu bar, press and release Alt.
When troubleshooting issues with any web site, after clearing your browser's cache and cookies, exit your browser completely before attempting to access the site again. In Windows, close all your browser windows; in Mac OS X, quit (Command-q) your browser.
On this page:
About cache, cookies, and history
Android
Chrome
Firefox
Internet Explorer 9 and 8
Mobile Safari for iPhone OS (iPhone, iPod touch, iPad)
Safari
About cache, cookies, and history
Each time you access a file through your web browser, the browser caches (i.e., stores) it. By doing this, the browser doesn't have to retrieve files and images from the web site each time you click Back or Forward.
A cookie is a file created by a web browser, at the request of a web site, that is then stored on your computer. These files typically store user-specific information such as selections in a form, shopping cart contents, or authentication data.
A browser's history is a log of sites that you visit. When you press a browser's Back button, you are moving back one entry in the history log.
Android
Start your browser.
Tap Menu, and then tap More.
Select Settings.
Under "Privacy settings", select Clear cache, Clear history, or Clear all cookie data as appropriate, and then tap OK to accept (or Cancel to cancel) the deletion.
Chrome
In the browser bar, enter: chrome://settings/clearBrowserData
Select the items you want to clear (e.g., Clear browsing history, Clear download history, Empty the cache, Delete cookies and other site and plug-in data).
From the Obliterate the following items from: drop-down menu, you can choose the period of time for which you want to clear cached information. To clear your entire cache, select the beginning of time.
Click Clear browsing data.
Firefox
From the Tools or History menu, select Clear Recent History.
If the menu bar is hidden, press Alt to make it visible.
From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, select Everything.
Click the down arrow next to "Details" to choose which elements of the history to clear.
Click Clear Now.
Internet Explorer 9 and 8
Click Tools, and select Delete Browsing History... .
Deselect Preserve Favorites website data, and select Temporary Internet files, Cookies, and History.
Click Delete.
Mobile Safari for iPhone OS (iPhone, iPod touch, iPad)
To clear cache and cookies:
From the home screen, tap Settings, and then tap Safari.
At the bottom of Safari's settings screen, tap Clear cookies and data, or Clear Cookies and Clear Cache. Confirm when prompted.
To clear history:
From the home screen, tap Safari.
At the bottom of the screen, tap the Bookmarks icon.
In the lower left, tap Clear.
Tap Clear History.
Safari
From the Safari menu, select Reset Safari... .
From the menu, select the items you want to reset, and then click Reset. As of Safari 5.1, Remove all website data covers both cookies and cache.
Reference Site: https://mso.harvard.edu/sp_clear_cache
