Why Do You Have to Clear Cache?
You certainly don't have to, not as a regular part of computer or smartphone maintenance, anyway. However, a few good reasons to clear cache come to mind...
Clearing your cache forces your browser to retrieve the newest copy available from the website, something that should happen automatically but sometimes does not.
You might also want to clear the cache if you're experiencing issues like 404 errors or 502 errors (among others), sometimes indications that your browser's cache is corrupted.
Regardless of why you might want to do it, clearing your cache really easy to do in all the popular browsers in use today.
In most browsers, you can clear the cache from the Privacy or History area in the Settings or Options menu, depending on the browser, of course. Ctrl+Shift+Del works with most browsers as well.
The exact steps involved in clearing your browser's cache depend entirely on what web browser you're using.
Here some browser-specific instructions, as well as links to more expansive tutorials if you need them:
Chrome: Clear Browsing Data
In Google Chrome, clearing the cache is done via the Clear browsing data area in Settings. From there, check Cached images and files (as well as anything else you want to remove) and then tap or click the Clear browsing data button.
Assuming you're using a keyboard, the quickest way to Clear browsing data is via the Ctrl+Shift+Del keyboard shortcut.
Without a keyboard, tap or click the Menu button (the icon with three stacked lines) followed by More tools and finally Clear browsing data....
See How To Clear the Cache in Chrome [support.google.com] for more details.
Tip: Choose the beginning of time from the Obliterate the following items from: option at the top of the Clear browsing data window to make sure you get everything.
In Chrome's mobile browser, go to Settings and then Privacy. From there, choose Clear browsing data. In this menu, check Cached images and files and press the CLEAR DATA button. Don't forget to choose beginning of time from the Clear data from the option at the top.
Internet Explorer: Delete Browsing History
In Microsoft Internet Explorer, the browser that comes pre-installed on most Windows computers, clearing the cache is done from the Delete Browsing History area. From here, check Temporary Internet files and website files and then click or tap Delete.
Like with other popular browsers, the fastest way to the Delete Browsing History settings is via the Ctrl+Shift+Del keyboard shortcut.
Another option is via the Tools button (the gear icon), followed by Safety and then Delete browsing history....
Tip: Internet Explorer often refers to the cache as temporary internet files but they're one in the same.
Firefox: Clear All History
In Mozilla's Firefox browser, you clear the cache from the Clear All History area in the browser's Options. Once there, check Cache and then tap or click Clear Now.
The Ctrl+Shift+Del keyboard shortcut is probably the fastest way to open this tool. It's also available from Firefox's Menu button (the three-lined "hamburger" button) via Options, then Privacy, and finally the clear your recent history link.
Tip: Don't forget to choose Everything from the Time range to clear set of options, assuming that's the time frame you want to clear the cache over.
Safari: Empty Caches
In Apple's Safari browser, clearing the cache is done via the Develop menu. Just tap or click Develop and then Empty Caches.
With a keyboard, clearing the cache in Safari is super easy with the Option-Command-E shortcut.
See How To Clear the Cache in Safari [help.apple.com] if you need more help.
Tip: If you don't see Develop on your Safari menu bar, enable it via Preferences, then Advanced, followed by selecting the Show Develop menu in menu bar option.
Opera: Clear Browsing Data
In Opera, clearing the cache is done via the Clear browsing data section that's part of Settings. Once open, check Cached images and files and then click or tap Clear browsing data.
The fastest way to bring up the Clear browsing data window is via the Ctrl+Shift+Del keyboard shortcut.
Without a keyboard, click or tap Menu, then More tools,and finally Clear browsing data.
See How To Clear the Cache in Opera [help.opera.com] for detailed instructions.
Tip: Be sure to choose the beginning of time option at the top so you're sure to erase everything!
Edge: Clear Browsing Data
In Microsoft's Edge browser, included in their newer versions of Windows, clearing the cache is done via the Clear browsing data menu. Once open, check Cached data and files and then tap or click Clear.
The fastest way to the Clear browsing data menu is via the Ctrl+Shift+Del keyboard shortcut.
Another option is via the More button (the icon with three horizontal dots), followed by Settings and then the Choose what to clear button under the Clear browsing data heading.
See How To Clear the Cache in Microsoft Edge [windows.microsoft.com] for more extensive help.
Tip: Tap or click Show more while in the Clear browsing data menu for additional items you can erase while clearing cached files and images.
Vivaldi: Clear Browsing Data
The Vivaldi browser is based on the Google Chrome browser and so clearing its cache is very similar.
Like on Chrome, you clear the cache in Vivaldi via the Clear browsing data area. From there, check Cached images and files, choose the beginning of time from the top menu (if that's what you want to do), and then tap or click Clear browsing data.
To get there, tap or click the Vivaldi button (the V logo icon) followed by Tools and finally Clear Private Data....
Also like on Chrome, as well as most browsers, the Ctrl+Shift+Del keyboard shortcut brings up this menu too.
More About Clearing Caches in Web Browsers
Most browsers have at least basic cache management settings where, at a minimum, you can choose how much space you'd like the browser to use for cached website data.
Some browsers even let you choose to automatically clear cache, as well as other data that might contain private information, every single time you close the browser window.
Check out the links to the more detailed information I provided in most of the browser-specific sections above if you're interested in learning about how to do any of these more advanced things with your browser's caching system.