Cache vs. History: Know the Difference
Your cache is a folder of files — images, scripts, style sheets — that pages reuse so they load faster. Your history is a list of the addresses you visited. Clearing the cache does not erase your history, and clearing history does not free the space the cache takes. If a page will not show its new design, the cache is the culprit; if you want to hide where you have been, that is history. Both live in the same settings screen in every browser.
Clear the Cache in Chrome, Edge, Firefox, and Safari
Chrome and Edge are nearly identical: press Ctrl+Shift+Delete (Cmd+Shift+Backspace on a Mac), choose All time in the time range dropdown, tick Cached images and files, and hit Clear data. In Firefox, press Ctrl+Shift+Delete, select Everything, check Cache, and clear. On Safari, open Settings > Privacy and click Manage Website Data, or press Cmd+Option+E to clear the cache directly. Skip the checkboxes for passwords and cookies unless you also want to sign in again everywhere.
On phones the steps are the same but buried deeper. In the Chrome app on Android, tap the three dots, then Settings > Privacy and security > Clear browsing data. On an iPhone, Safari's Clear History and Website Data button lives in Settings > Safari. Clearing cache on mobile also frees storage, which speeds up an older phone.
When to Clear Cache, and What You Lose
You rarely need to clear cache more than once every few weeks. Do it when a page looks broken, shows stale content, or a payment form misbehaves after a site update. Clearing it logs you out of most sites because cookies often go with it, so keep a password manager handy. Clearing cache does not delete downloads, bookmarks, or autofill addresses, so your saved passwords and favorites stay put.
The Bottom Line
One habit keeps the cache from becoming a problem at all: let your browser do its job between fixes. Cache only turns stale when a site changes and your browser keeps serving the old copy. If you clear it every few weeks — or any time a page looks off — you get fresh pages and a clean trail without giving up your logins.