What clearing cache does and why you might need to

Cache is temporary data that WordPress stores to make your site load faster. When someone visits your site, WordPress saves copies of pages, images, and other files so it doesn't have to rebuild them from scratch every time. This speeds things up — but it also means old versions of your content can stick around even after you've made changes.

Clearing cache forces WordPress to rebuild those pages fresh. You'll want to do this after you update a post, change your site's appearance, install a new plugin, or fix something that visitors aren't seeing correctly. Without clearing cache, people might see the old version for hours or even days.

There are two types of cache to understand: server cache (stored on your hosting company's computers) and plugin cache (stored by a caching plugin you've installed). Most people deal with plugin cache because it's easier to control. Some hosting companies also handle server cache automatically, and you may not need to touch it at all.

Key Takeaways

  • Plugin cache is the most common type you'll clear yourself, and the method depends on which caching plugin you're using.
  • WP Super Cache and W3 Total Cache are the two most widely used plugins, and each has a different button location for clearing cache.
  • After clearing cache, your site may load slightly slower for the first few minutes while it rebuilds the cached files.
  • If you don't use a caching plugin, your hosting company may handle cache automatically, and you can contact their support to ask how to clear it.

Clearing cache with WP Super Cache

WP Super Cache is one of the most common caching plugins. To clear it, log into your WordPress dashboard and look for "WP Super Cache" in the left menu. Click on it, then click the "Contents" tab at the top.

You'll see a button that says "Delete Cache". Click it. That's the whole process — the plugin will delete all stored cache files when ready. Your site will rebuild them as visitors arrive over the next few minutes.

If you don't see WP Super Cache in your menu, the plugin may not be installed or may not be active. You can check by going to Plugins in your dashboard and searching for "WP Super Cache" to see its status.

Clearing cache with W3 Total Cache

W3 Total Cache works differently. Log in to your dashboard and find "Performance" in the left menu (this is the W3 Total Cache menu). Click on it, then look for "Empty All Caches" near the top of the page.

Click that button and the plugin will clear all its stored data. Like WP Super Cache, your site will rebuild cache as traffic arrives. This usually takes just a few minutes.

W3 Total Cache also lets you set up automatic cache clearing on a schedule, so you don't have to do it manually every time. You can find this under Performance > General Settings if you want to explore that option.

Clearing cache if you don't use a caching plugin

Not every WordPress site uses a caching plugin. Some hosting companies build caching into their servers instead. If you don't see WP Super Cache, W3 Total Cache, or any other caching plugin in your Plugins menu, your host probably handles it for you.

In that case, contact your hosting company's support team and ask them how to clear server cache. They can do it for you, or they can tell you if there's a button in your hosting control panel (like cPanel or Plesk) where you can do it yourself. Most hosts can clear it in seconds.

You can also ask your host whether they clear cache automatically after you make changes. Some do, which means you may never need to clear it manually.

What to expect after you clear cache

Right after you clear cache, your site may feel slightly slower for a few minutes. This is normal — WordPress is rebuilding all those cached files. Once the cache rebuilds, your site will speed back up.

Visitors won't see old content anymore. If you changed a post, updated an image, or modified your site's design, they'll see the new version on their next page load. This usually happens within seconds of you clearing cache.

If you cleared cache and visitors are still seeing old content, the problem may be browser cache (stored on their computer, not your server). They can fix this by holding Ctrl and pressing F5 on Windows, or Cmd and Shift and R on Mac. This forces their browser to reload the page fresh.

When to clear cache and when not to

Clear cache whenever you make changes you want people to see right away: after publishing a new post, updating an old one, changing your site's colors or layout, or installing a new plugin. A good rule is to clear it whenever you've made something different and want to verify it looks right.

You don't need to clear cache constantly. If you're just browsing your site or checking statistics, leave cache alone — it's helping your site run faster. Only clear it when you've actually changed something.

If you notice your site acting strangely — pages not loading, plugins not working, or design elements missing — clearing cache is often the first thing to try. Many WordPress problems disappear once cache is cleared.

Clearing cache on mobile or tablet

You clear cache the same way on any device: log into your WordPress dashboard from your phone or tablet, find your caching plugin, and click the clear button. The process is identical to desktop.

The only difference is that your phone's browser may also have its own cache. If you're testing your site on your phone and seeing old content even after clearing WordPress cache, try clearing your phone's browser cache too. In most browsers, this is under Settings > Privacy or Settings > Clear Browsing Data.

Frequently Asked Questions

Will clearing cache delete my posts or pages?

No. Cache is only temporary storage of how your pages look. Clearing it doesn't touch your actual content, posts, pages, or settings. Everything you've written stays exactly where it is.

How often should I clear cache?

Only when you've made changes you want to see when ready. If you publish a post on Monday and don't touch your site again until Friday, you don't need to clear cache in between. Clear it when you change something, not on a schedule.

What if I clear cache and my site breaks?

Clearing cache itself can't break anything — it just removes temporary files. If your site looks broken after clearing cache, the problem was already there; clearing cache just revealed it. Contact your hosting support or a WordPress informed to diagnose the real issue.

Can I clear cache without logging into WordPress?

Not with a plugin. You have to log into your dashboard to access the caching plugin's settings. If your host handles cache, they can clear it for you without you doing anything — just contact their support team.

Does clearing cache slow down my site permanently?

No. Your site may be slightly slower for a few minutes while cache rebuilds, but once it does, your site returns to normal speed. Clearing cache is temporary and doesn't cause lasting slowdowns.