Software · guide

How to clear cache on Mac, and what goes with it

By Alberto Gulotta · Updated · 10 min read

Safari has two commands for this, in two different places, and they do different jobs. Choosing between them is most of the question — and one of them quietly removes something that is not history at all.

Clear History

History menu · removes ten things
  1. In Safari, choose History → Clear History.
  2. Click the pop-up menu and “choose how far back you want your browsing history cleared”.

Manage Website Data

Settings · per site, or all
  1. Choose Safari → Settings, then click Privacy.
  2. Click Manage Website Data.
  3. “Select one or more websites, then click Remove or Remove All.”

The short version of the difference: Clear History is about time — you pick how far back and Safari removes a defined list of things from that period. Manage Website Data is about sites — you can see “all the websites that have stored cookies and website data on your Mac” and remove them individually or all at once.

So a single misbehaving site is a Manage Website Data job, and a general clear-out is a Clear History one. Reaching for the wrong one is why this sometimes appears not to work.

One word is missing from both of those commands, and it is the word people arrive with. Neither menu says cache. Apple’s two commands are called Clear History and Manage Website Data; the thing being searched for is defined somewhere else entirely. Mozilla’s developer documentation gives it in one line: “A private cache is a cache tied to a specific client — typically a browser cache. Since the stored response is not shared with other clients, a private cache can store a personalized response for that user.” That is the distinction the menus leave you to make on your own: the cache is the stored copy of what a site sent you; the history is the list of where you went. They are cleared by different commands, and confusing them is why one of the two often seems not to have worked.

A drawn table separating history, website data and cache as three different things on a Mac
The word people search for, and the two the menus actually use. Apple for the first two rows, MDN Web Docs for the third. Figure drawn by AI Tools Primer.

What “Clear History” actually removes

Apple publishes the list. Two items on it are not history in any ordinary sense of the word.

Two of those ten are worth stopping on, because they are not what anybody means by history. Clearing history forgets which websites asked to use your location and which asked to send you notifications. That is not a bad thing — but it means sites you had already answered will ask again, and a clear-out is therefore also a reset of those small permissions.

The downloads line is the other one to read carefully. Safari removes “the list of items you downloaded” — and Apple adds, in the same breath, that the downloaded files aren’t removed. The record goes; the files stay where they were saved.

“If your Mac and your other Apple devices have iCloud set up for Safari, your browsing history is removed from all of them.”

Clearing history on the Mac is not a local tidy-up if Safari is syncing. It reaches the iPhone and the iPad too, which is either exactly what you wanted or a surprise, depending on why you were doing it. Worth knowing in advance, because there is no undo and no “this device only” option on that menu.

“Note: Removing cookies and website data in Safari may change or remove them in other apps.”
“Removing the data may reduce tracking, but may also sign you out of websites or change website behavior.”

Two costs, both stated by Apple and both easy to meet without expecting them. The second is the familiar one: Remove All is also a log-out-of-everything button. The first is stranger and more interesting — website data on a Mac is not sealed inside Safari, so clearing it there can change what happens in other applications. Apple does not say which, and this page will not guess; what it says is enough to make Remove All a deliberate act rather than a routine one.

Between those two boxes sits the practical advice this page can honestly give. Manage Website Data with a site selected is the small, reversible-in-practice version — one site signs you out, the rest carry on. Remove All is the large version, and Apple names its two consequences rather than leaving them to be discovered.

The limit Apple states plainly. “Clearing your browsing history in Safari doesn’t clear any browsing histories kept independently by websites you visited.” That is the sentence that separates tidying your own machine from disappearing. What you removed was your copy. The record a site kept of a visit, an account, or a purchase is on their side, unaffected by anything in this menu.

What this page will not tell you is how to clear system or application caches outside Safari. Apple documents the browser; the folders elsewhere on a Mac are not something it tells people to empty, and a page that sent you into them on the strength of nothing would be inventing both the instruction and the reason.

Nor will it claim that clearing anything here frees up meaningful disk space. Apple describes these commands in terms of privacy and website behaviour, not storage, and the storage claim is somebody else’s to make.

The guides below take it three ways: the two commands, what leaves the machine when you use them, and the same question on the other Apple device.

Where to start

Three ways in. If one site is misbehaving, take the first.

“One site is broken or logged in wrong.”
Manage Website Data — the two commands
“I want a general clear-out.”
Clear History, and read the list — the two commands
“Will this remove me from anything?”
Apple names two costs — what it costs

The two commands

One works by time and one by site. Clear History removes a published list of ten things; Manage Website Data lets you pick a single site or all of them.

Speeding up a MacBookApple publishes five causes, and not one of them is a cache to clear.Open this guide → Backing up a MacBookApple lists four ways and puts them in an order — and only one recovers a deleted file.Open this guide → Clearing a cache on iPhoneWhat actually goes, what comes straight back, and the warning Apple attaches.Open this guide → Updating SafariWhy there is no separate Safari update, and where the version actually comes from.Open this guide → Copy and paste on a MacThe same job on Apple’s side, including why the Finder has no Cut command.Open this guide → Incognito modeThe other way round: a window that never writes the history you would otherwise be clearing.Open this guide →

What it costs

Signed out of websites, changed website behaviour, and possibly changes in other apps. All three are Apple’s own words rather than warnings invented here.

Private browsingWhat a private window hides, from whom, and the three parties it does not hide you from.Open this guide → HTTP and HTTPSThe S is about the connection, not the site — and Google says so under its own padlock.Open this guide → Saved passwords on iPhoneThey left Settings for an app of their own in iOS 18.Open this guide → A tab you just closedThe list a browser keeps of what you shut, which clearing the history is one way of losing.Open this guide →

What leaves the machine

With iCloud set up for Safari, clearing history on the Mac clears it everywhere. And what websites keep on their own side is untouched either way.

iCloud syncing pausedSeven different reasons with seven different remedies — and Apple warns against the obvious fix.Open this guide → iCloud storageWhat is actually taking the space, in the order Apple lists it.Open this guide → Finding downloadsTwo routes to the folder — and a setting that decides whether the folder holds them at all.Open this guide →

Not covered here. It will not send you into system folders to delete caches. Apple documents the browser, and an instruction to empty anything else would be invented along with its justification.

It will not promise disk space. Apple describes these commands in terms of privacy and website behaviour, and says nothing about storage.

And it will not suggest clearing history removes you from a website’s own records. Apple states the opposite in a single sentence, quoted above in full. What holds instead is simple: everything clearing removes, and everything it does not remove, is Apple’s own list from the Safari guide rather than a tidier version of it.

Sources

  1. Apple, Clear your cache and cookies in Safari on Mac — Safari User Guide (that all websites which have stored cookies and website data on the Mac can be seen and some or all of it removed; the route of choosing Safari → Settings, clicking Privacy, clicking Manage Website Data, then selecting one or more websites and clicking Remove or Remove All; the note that removing the data may reduce tracking but may also sign the user out of websites or change website behaviour; and the note that removing cookies and website data in Safari may change or remove them in other apps) — support.apple.com, read 22 August 2026.
  2. Apple, Clear your browsing history in Safari on Mac — Safari User Guide (the route of choosing History → Clear History and using the pop-up menu to choose how far back to clear; that where the Mac and other Apple devices have iCloud set up for Safari the browsing history is removed from all of them; that clearing browsing history in Safari does not clear browsing histories kept independently by the websites visited; and the published list of what is removed — the history of webpages visited, the back and forward list for open webpages, the frequently visited site list, recent searches, icons for webpages, snapshots saved for open webpages, the list of downloaded items though not the downloaded files themselves, websites added for Quick Website Search, websites that asked to use the user’s location, and websites that asked to send notifications) — support.apple.com, read 16 September 2026.
  3. MDN Web Docs (Mozilla) — HTTP caching (the definition this page uses for the word that appears in neither Safari command: that a private cache is a cache tied to a specific client, typically a browser cache, and that because the stored response is not shared with other clients a private cache can store a personalized response for that user) — developer.mozilla.org, read 6 September 2026.

Written by Alberto Gulotta

Founder and editor of AI Tools Primer, writing from Palermo, Italy. Thirty-five years of taking computers apart, starting with a Commodore 64 — the long version is on the about page.

Something wrong on this page? Write to aitoolsprimer@gmail.com and it gets fixed.

Written on 22 August 2026 · last checked 23 September 2026.

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