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How to clear the cache on a Safari browser to make it run more efficiently

Laura McCamy   

How to clear the cache on a Safari browser to make it run more efficiently

safari app

K303/Shutterstock

Clear your Safari cache on a desktop computer or mobile device with these steps.

  • It just takes a minute to clear the cache on Safari, Apple's web browser, whether you're on a Mac computer or a mobile device.
  • Web browsers save data from the websites you visit to load them more quickly when you return. But an overstuffed cache can sometimes cause technical problems.
  • Here's how to clear your cache on Safari's desktop and mobile browser.

If your Mac computer is running slow or you're having trouble loading a website, your friendly IT person may tell you to clear your cache.

A cache is a store of data that your computer keeps. When you visit a website, the browser on your computer (or phone) stores a snapshot of the pages you view.

If you go back to that website, Safari loads the cached page in an instant, instead of taking the time to retrieve the page from the internet again. But an overloaded cache can cause your device to run inefficiently and could use a periodic clearing.

Here's what you need to know to clear your cache on Safari.

The benefits of clearing your cache

Your cache loads the last version of a page or form that you viewed. If there were changes in the page after you last visited, they won't appear in the cached page. Periodically clearing your cache ensures that you browse updated webpages.

In addition, if storage space is at a premium on your device or computer, clearing your cache can free up much-needed memory.

How to clear your Safari cache on a Mac computer

1. Click on the Safari tab at the top right of your screen and choose Preferences from the dropdown menu.

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Laura McCamy/Business Insider

Click "Preferences."

2. Click the Advanced tab of the menu that pops up.

3. At the end of the tab, select the "Show Develop menu in menu bar" box and close the Preferences menu.

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Laura McCamy/Business Insider

Select the box for "Show Develop menu in menu bar."

4. Click the Develop tab from the Safari menu at the top of the page.

5. Click Empty Caches from the dropdown menu.

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Laura McCamy/Business Insider

Click "Empty Caches" from the Develop tab.

You may also want to clear your browsing history in addition to emptying your cache. Here's how to do that.

1. Choose the History tab in Safari (pictured above).

2. At the very bottom of the dropdown menu, choose Clear History.

3. A box pops up with a choice to clear the last hour, today, today and yesterday, or all history. Choose your time frame and click the Clear History button.

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Laura McCamy/Business Insider

Choose the amount of history you'd like to clear.

If you're not sure how far back you want to clear your of your browsing data, err on the side of clearing less. You can always go back and clear out more later.

Any tabs you have open at the time you clear your browsing history will remain. You may notice that the Frequently Visited section no longer appears when you open a new tab. As you build up your browsing history again, those sites will reappear.

How to clear the Safari cache on iPhone, iPad, or iPod

You have two choices to clear your cache on Safari's mobile app.

To clear your entire browsing history and cache:

1. Open the Settings app.

2. Tap Safari.

3. Tap Clear History and Website Data.

safari clear cache

Laura McCamy/Business Insider

Tap "Clear History and Website Data" under the Safari tab in the Settings app.

4. On the screen that pops up, choose Clear History and Data. Note that, when you clear your cache on your iPhone or iPad, it will clear your history on your connected devices and computers as well.

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Laura McCamy/Business Insider

Tap "Clear History and Data."

To clear your cookies but not your browsing history:

1. Open the Settings app.

2. Tap Safari.

3. Tap Advanced.

4. Tap Website Data.

website data

Laura McCamy/Business Insider

Tap "Website Data."

5. Choose Remove All Website Data.

remove all website

Laura McCamy/Business Insider

Tap "Remove All Website Data."

Before you do this, you might want to check your iCloud settings (see below) to make sure you preserve your passwords.

What happens to saved passwords when you clear your cache

You may have had the experience of clearing your browsing history and cache and then discovering that your browser logged you out of your favorite websites. If you saved passwords in your browser so you could automatically log in to certain sites, clearing your cache can clear your passwords as well.

Happily, Apple has a solution to this problem. If you use iCloud, check your iCloud settings on your phone or computer. Make sure that you've checked the box for Safari.

safari iphone

Laura McCamy/Business Insider

Make sure the Safari box is on under iCloud to retain your passwords in your keychain.

As long as this box is checked, any passwords you save through your browser will stay safe in your keychain.

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