How to Purge Cache in WordPress? Clear Cache Safely and Efficiently

If your WordPress website feels slow, shows outdated content, or behaves strangely after an update, the fix is often simpler than you think: clearing the cache. But what exactly is a cache, why does it need to be cleared, and how do you do it safely without breaking your site? This guide answers all of those questions in plain, easy-to-understand language.

Whether you are a complete beginner running your first blog or a small business owner managing your company website, this article will walk you through everything you need to know about purging the cache in WordPress – step by step, method by method.

What Is a Cache? (And Why Does WordPress Use One?)

Before jumping into how to clear the cache, it helps to understand what caching actually is and why it exists in the first place.

A cache (pronounced “cash”) is a temporary storage area where copies of files or data are saved so they can be served quickly the next time someone asks for them. Think of it like a shortcut.

When a visitor lands on your WordPress website for the first time, the server has to do a lot of work: it retrieves content from the database, runs PHP scripts, combines HTML with CSS and JavaScript, and then delivers the final page to the browser. This process takes time and uses server resources.

With caching enabled, the server saves a ready-made version of that page after it is built the first time. When the next visitor arrives, the server simply delivers that saved version instead of rebuilding the page from scratch. This makes the page load much faster and reduces the strain on your server.

Types of Cache in WordPress

WordPress typically deals with several layers of caching:

• Browser Cache: Your web browser stores copies of images, CSS files, and JavaScript locally on your device. This speeds up load times when you revisit a page.
• Server-Side Cache: Hosting providers often have their own caching system built into the server. This can include page caching, object caching, and opcode caching.
• WordPress Plugin Cache: Plugins like WP Rocket, W3 Total Cache, and LiteSpeed Cache create their own cached versions of your pages and assets.
• CDN Cache: If you use a Content Delivery Network (CDN) like Cloudflare, it caches your site across multiple servers around the world for even faster delivery.
• Database Cache: Some caching systems also store the results of common database queries to avoid repeating the same lookups.

Key Takeaway: Caching is a powerful performance tool, but the saved versions can become outdated. That is exactly why you sometimes need to purge the cache – to force WordPress to rebuild fresh versions of your pages.

Why Do You Need to Purge the Cache in WordPress?

Clearing or purging the cache means deleting those stored copies so that fresh ones can be created. There are many situations where this becomes necessary.

Common Reasons to Clear Your WordPress Cache

1. You Updated a Page or Post: You made changes to a blog post or landing page, but visitors still see the old version. Clearing the cache forces the site to serve the updated content.
2. You Changed Your Theme or Design: After modifying your site’s colors, fonts, or layout, you may need to clear the cache before the changes become visible to everyone.
3. You Installed or Updated a Plugin: New or updated plugins sometimes change how pages behave. Stale cache can cause conflicts or display errors.
4. Your Site Is Showing Errors: A blank page, broken layout, or missing elements can sometimes be caused by a corrupted cache file. Clearing it often resolves the issue.
5. You Updated WordPress Core: After a major WordPress update, clearing the cache ensures everything runs with the latest files.
6. You Added New Products or Content: In WooCommerce stores or busy blogs, new additions need to be reflected immediately for customers or readers.
7. You Changed Important Settings: Updating your permalink structure, adding SSL (HTTPS), or changing your homepage can all require a cache clear to take effect properly.

Good to Know: You do not need to clear the cache every day. It is mainly something you do after making changes, troubleshooting a problem, or when visitors report seeing outdated content.

How to Purge Cache in WordPress Using a Caching Plugin

The most common way to manage cache in WordPress is through a caching plugin. There are several popular options, and each one has its own method for clearing the cache. Let us look at the most widely used ones.

Method 1: Using WP Rocket

WP Rocket is one of the most popular premium caching plugins for WordPress. It is known for being beginner-friendly and powerful at the same time.

Steps to clear cache with WP Rocket:

8. Log in to your WordPress dashboard.
9. In the top admin toolbar, you will see a rocket icon labeled “WP Rocket”. Click on it.
10. A dropdown menu will appear with the option “Clear Cache”. Click it.
11. WP Rocket will immediately delete all cached files and begin rebuilding them as visitors browse your site.

Alternatively, you can go to Settings > WP Rocket in your dashboard, navigate to the Dashboard tab, and click the “Clear and Preload Cache” button. This not only clears the old cache but also triggers WP Rocket to pre-generate fresh pages so your site stays fast.

Pro Tip: WP Rocket also offers automatic cache clearing. You can configure it to clear the cache whenever you update a post, publish new content, or change plugin settings. This is a great set-it-and-forget-it option.

Method 2: Using W3 Total Cache

W3 Total Cache is a free, feature-rich caching plugin that is widely used. It can be more complex than WP Rocket, but clearing the cache is fairly straightforward.

Steps to clear cache with W3 Total Cache:

12. Log in to your WordPress dashboard.
13. In the top admin toolbar, look for the “Performance” menu item (this is added by W3 Total Cache).
14. Hover over it to see a dropdown. You will see options including “Purge All Caches”.
15. Click “Purge All Caches” to clear everything at once.

You can also go to Performance > Dashboard in your admin panel. There you will find individual buttons to clear specific types of cache such as Page Cache, Database Cache, Object Cache, and Browser Cache. This gives you more control when you only need to clear one type.

Method 3: Using LiteSpeed Cache

LiteSpeed Cache is a powerful free plugin that works especially well on LiteSpeed servers (common with many hosting providers like Hostinger and A2 Hosting).

Steps to clear cache with LiteSpeed Cache:

16. Log in to your WordPress dashboard.
17. In the top admin toolbar, click the LiteSpeed Cache icon (it looks like a green rocket or lightning bolt).
18. From the dropdown, click “Purge All” to clear all cached files instantly.

You can also go to LiteSpeed Cache > Manage > Purge All in the sidebar. The plugin gives you granular controls to purge specific types of cache like CSS, JavaScript, images, or database objects.

Method 4: Using WP Super Cache

WP Super Cache is a free plugin made by Automattic, the company behind WordPress.com. It is simple and reliable for beginners.

Steps to clear cache with WP Super Cache:

19. Log in to your WordPress dashboard.
20. Go to Settings > WP Super Cache.
21. Click on the “Delete Cache” tab.
22. Click the button that says “Delete Cache”.

The plugin will wipe all cached pages. New cache files will be generated as visitors access your site again.

Method 5: Using Swift Performance

Swift Performance is another excellent caching plugin that offers both a free and premium version.

Steps to clear cache with Swift Performance:

23. Log in to your WordPress dashboard.
24. Navigate to Swift Performance in the sidebar.
25. Click on “Clear All Cache” from the dashboard options.
26. Confirm the action if prompted.

Reminder: Each caching plugin works differently, but the basic idea is always the same: find the option to clear or purge cache and click it. The process is rarely more complicated than a few clicks.

How to Clear Cache From Your Hosting Control Panel

Many WordPress hosting providers include built-in caching systems at the server level. This type of cache operates independently of your WordPress plugins and must be cleared from your hosting dashboard.

Clearing Cache on Kinsta Hosting

Kinsta uses a server-level page cache powered by Nginx. Here is how to clear it:

27. Log in to your MyKinsta dashboard.
28. Select your site from the list.
29. Click on “Tools” in the left sidebar.
30. Under the “WordPress Cache” section, click “Clear Cache”.

Kinsta also provides a Clear Cache button directly in your WordPress admin toolbar when the Kinsta MU plugin is installed. This makes it easy to clear cache without leaving your dashboard.

Clearing Cache on WP Engine

WP Engine provides its own caching system and a dedicated plugin called WP Engine System. Here is how to purge the cache:

31. Log in to your WordPress admin dashboard.
32. Look for the “WP Engine” menu in the admin toolbar at the top.
33. Click on “General Settings” or hover over it to find the “Purge All Caches” button.
34. Click “Purge All Caches” to clear the cache immediately.

Clearing Cache on SiteGround

SiteGround offers its own caching plugin called SG Optimizer (for older accounts) or the Speed Optimizer plugin on newer accounts. Clearing cache is simple:

35. Log in to your WordPress admin dashboard.
36. In the sidebar, go to SG Optimizer (or Speed Optimizer).
37. Navigate to the “Caching” tab.
38. Click the “Flush Cache” or “Purge Cache” button.

SiteGround also offers caching through its Site Tools control panel under Speed > Caching where you can manage and flush cache from the hosting side.

Clearing Cache on Bluehost

Bluehost uses a caching solution called Endurance Page Cache. Here is how to clear it:

39. Log in to your WordPress dashboard.
40. In the admin toolbar, look for the Bluehost menu.
41. Click “Caching” and then select “Purge Cache”.

Alternatively, go to the Bluehost tab in the left sidebar, click on “Performance”, then choose “Clear Cache”.

Clearing Cache on Cloudways

Cloudways uses Varnish Cache and Breeze (their custom caching plugin). To clear cache:

42. Log in to your WordPress admin.
43. In the top toolbar, click the Breeze icon.
44. Select “Purge All Cache”.
45. Alternatively, log into your Cloudways platform, navigate to your application, and use the “Purge Varnish Cache” button.

How to Clear Cache in Cloudflare

If you are using Cloudflare as a CDN or DNS provider (which is very common and free), it has its own cache that you sometimes need to purge separately from your WordPress cache.

Here is how to clear cache in Cloudflare:

46. Log in to your Cloudflare account at cloudflare.com.
47. Select the website (domain) you want to manage.
48. In the left sidebar, click on “Caching”.
49. Click on “Configuration”.
50. Under the section labeled “Purge Cache”, click the “Purge Everything” button.
51. A confirmation dialog will appear. Click “Purge Everything” to confirm.

Cloudflare will immediately remove all cached copies of your site from its global network. Fresh versions will be cached the next time visitors access your pages.

Custom Purge: Instead of purging everything, Cloudflare also allows you to purge specific URLs or files. This is useful if you only changed one page and do not want to impact the performance of the rest of your site during the recaching process.

If you have the Cloudflare plugin installed in WordPress (available for free), you can also purge the Cloudflare cache directly from your WordPress admin toolbar without logging into your Cloudflare account. Very convenient!

How to Clear the Browser Cache

Sometimes the issue is not on your server at all – it is stored in your own web browser. When you visit a website, your browser saves images, fonts, CSS, and JavaScript locally to make future visits faster. But this means you might be looking at an outdated version of your own site.

Clearing your browser cache forces it to download fresh copies of everything.

Clearing Cache in Google Chrome

52. Click the three dots menu in the top right corner.
53. Go to Settings > Privacy and Security > Clear Browsing Data.
54. Make sure “Cached images and files” is checked.
55. Click “Clear data”.

Keyboard shortcut: Press Ctrl + Shift + Delete (Windows) or Cmd + Shift + Delete (Mac) to open the clear browsing data window quickly.

Clearing Cache in Firefox

56. Click the three lines menu (hamburger icon) in the top right.
57. Go to Settings > Privacy and Security.
58. Scroll down to “Cookies and Site Data” and click “Clear Data”.
59. Make sure “Cached Web Content” is checked, then click “Clear”.

Clearing Cache in Safari

60. Click “Safari” in the top menu bar.
61. Select “Preferences” and go to the “Advanced” tab.
62. Check “Show Develop menu in menu bar”.
63. Now go to Develop > Empty Caches.

Hard Refresh (Quick Alternative)

If you just want to force a fresh load of the current page without clearing your entire browser cache, you can do a hard refresh:

• Windows/Linux: Press Ctrl + F5 or Ctrl + Shift + R
• Mac: Press Cmd + Shift + R

This tells the browser to ignore cached files for that page and download everything fresh from the server.

How to Clear WordPress Object Cache

Object caching is a more advanced type of caching that stores the results of complex database queries in memory (using tools like Redis or Memcached). This allows WordPress to skip repetitive database lookups.

While object caching is excellent for performance, it can sometimes serve stale data after updates. Here is how to clear it.

Clearing Object Cache via Plugin

Most caching plugins like W3 Total Cache, LiteSpeed Cache, and Redis Object Cache plugin provide a way to flush the object cache from the dashboard.

• In W3 Total Cache: Go to Performance > Dashboard and click “Flush object cache”.
• In LiteSpeed Cache: Go to LiteSpeed Cache > Manage > Purge and select “Object Cache”.
• In Redis Object Cache Plugin: Go to Settings > Redis and click “Flush Cache”.

Clearing Object Cache via WP-CLI

If you are comfortable using the command line, WP-CLI is a powerful tool that lets you manage WordPress from the terminal. To clear the object cache, simply run:

wp cache flush

This command flushes the entire object cache regardless of which caching backend (Redis, Memcached, etc.) is in use. It is a quick and reliable way to resolve object cache issues on staging or production environments.

How to Clear WordPress Transients

Transients are a specific type of cache used by WordPress itself to store temporary data in the database. They are commonly used by plugins and themes to save API responses, query results, or computed values for a limited time.

Over time, expired transients can pile up in your database and slow things down. Here is how to clear them.

Using a Plugin

The easiest way to clean up transients is to use the Transients Manager plugin (free). After installing it:

64. Go to Tools > Transients Manager in your WordPress dashboard.
65. You can view all stored transients.
66. Click “Delete Expired Transients” to remove only the outdated ones, or “Delete All Transients” to clear everything.

Using WP-CLI

To delete all transients via command line, run:

wp transient delete –all

To delete only expired transients:

wp transient delete –expired

Note: Deleting transients is safe. WordPress and your plugins will simply regenerate any that are needed. You will not lose any important settings or content.

Best Practices: How to Clear Cache Safely

Clearing the cache is usually safe, but doing it carelessly can cause brief downtime or performance dips. Here are some best practices to follow so you always clear cache safely and efficiently.

1. Clear Cache After Making Changes, Not Constantly

You do not need to purge the cache every hour. Doing so will actually reduce your site’s performance because the server keeps rebuilding pages that have not changed. Clear it strategically – after updates, content changes, or troubleshooting.

2. Use Cache Preloading

Many caching plugins offer a preloading feature that automatically rebuilds the cache right after you clear it. This means visitors will still get fast, cached pages rather than hitting your server while the cache is cold. Always enable preloading if your plugin supports it.

3. Be Careful on High-Traffic Sites

If your site gets thousands of visitors per hour, clearing the cache can temporarily send a large number of requests directly to your server as the cache rebuilds. On high-traffic websites, consider clearing cache during low-traffic hours, or use selective cache clearing to only purge specific pages rather than the entire site.

4. Clear Each Cache Layer When Troubleshooting

If you are trying to fix a display or content problem, remember that there are multiple caching layers: your plugin cache, server cache, CDN cache, and browser cache. Sometimes you need to clear all of them to see the latest version of your site. Start with the WordPress plugin cache, then server cache, then CDN, and finally your browser.

5. Keep Your Caching Plugin Updated

Outdated caching plugins can introduce bugs or security vulnerabilities. Always keep your caching plugin up to date. After updating the plugin, clear the cache once to make sure everything runs with the newest version.

6. Test After Clearing Cache

After purging the cache, always visit your site in an incognito (private) browser window to check how it looks for real visitors. Incognito mode bypasses your own browser cache, so you see a clean, un-cached version of your site.

7. Avoid Clearing Cache During Checkout or Forms

For WooCommerce or any eCommerce site, avoid clearing cache while customers are in the middle of a checkout. Some caching setups can interfere with form submissions or active sessions if the cache is wiped mid-process.

Troubleshooting: Cache Problems in WordPress

Sometimes clearing the cache creates confusion instead of solving problems. Here are answers to common cache-related issues in WordPress.

Problem: The Site Still Shows Old Content After Clearing Cache

Solution: This usually means there is more than one layer of cache. Try these steps in order:

67. Clear the WordPress caching plugin cache.
68. Clear the server-level cache from your hosting panel.
69. Clear the Cloudflare or CDN cache if you use one.
70. Hard-refresh your browser using Ctrl + F5 or Cmd + Shift + R.
71. Test in a new private/incognito browser window.

Problem: Site Looks Broken After Clearing Cache

Solution: If your site appears broken after a cache purge, the new cache may have been built incorrectly. Try the following:

72. Disable your caching plugin temporarily to see if the site looks correct without caching.
73. If yes, re-enable and purge the cache again.
74. Check if your theme or a plugin has a conflict.
75. Make sure your CSS and JavaScript are not being too aggressively minified.

Problem: Logged-In Users See Cached Pages

Solution: Most good caching plugins automatically exclude logged-in users from seeing cached content. Check your plugin settings and make sure the option to bypass cache for logged-in users is turned on. In WP Rocket, this is found under Advanced Rules. In W3 Total Cache, look in the Page Cache settings under “Don’t cache pages for logged in users”.

Problem: WooCommerce Cart or Account Pages Are Cached

Solution: Cart, checkout, and account pages should never be cached because they are dynamic and user-specific. Most good caching plugins handle this automatically, but you should double-check. In your caching plugin settings, look for the list of excluded URLs and make sure your cart (/cart/), checkout (/checkout/), and account (/my-account/) pages are excluded from caching.

Quick Reference: Cache Clearing by Method

Below is a handy summary of the different ways you can clear the cache in WordPress, organized by type:

WordPress Plugin Methods

• WP Rocket: Admin toolbar > WP Rocket > Clear Cache
• W3 Total Cache: Admin toolbar > Performance > Purge All Caches
• LiteSpeed Cache: Admin toolbar > LiteSpeed Cache icon > Purge All
• WP Super Cache: Settings > WP Super Cache > Delete Cache tab

Hosting Panel Methods

• Kinsta: MyKinsta > Site > Tools > Clear Cache
• WP Engine: Admin toolbar > WP Engine > Purge All Caches
• SiteGround: SG Optimizer plugin > Caching > Flush Cache
• Bluehost: Admin toolbar > Bluehost > Performance > Clear Cache

CDN Methods

• Cloudflare: Cloudflare Dashboard > Caching > Configuration > Purge Everything
• Cloudflare WordPress Plugin: Admin toolbar > CF Cache > Purge Cache

Browser Cache Methods

• Chrome: Ctrl + Shift + Delete > Clear cached images and files
• Firefox: Settings > Privacy and Security > Clear Data > Cached Web Content
• Safari: Develop > Empty Caches
• Hard Refresh (any browser): Ctrl + F5 (Windows) or Cmd + Shift + R (Mac)

Advanced Methods

• WP-CLI Object Cache: wp cache flush
• WP-CLI Transients: wp transient delete –all
• Transients Manager Plugin: Tools > Transients Manager > Delete Expired

Should You Automate Cache Clearing?

One of the nicest features in modern caching plugins is automatic cache management. Rather than remembering to manually clear the cache after every change, you can configure your caching plugin to handle it for you.

Here are common automation options available in plugins like WP Rocket:

• Automatically clear the cache when a post or page is updated or published.
• Automatically clear the cache when a comment is approved.
• Automatically clear the cache when a WordPress core, theme, or plugin update is applied.
• Set a scheduled interval (e.g., every 24 hours) to clear and rebuild the cache.

Automation makes sense for most websites, especially blogs and business sites where content is updated regularly. For large eCommerce stores or complex sites, you might prefer more manual control to avoid unexpected performance dips.

Recommendation: Enable automatic cache clearing for individual posts and pages. This way, the relevant page cache is refreshed the moment you hit “Update” or “Publish” in WordPress, with no extra steps required.

Conclusion

Clearing the cache in WordPress might sound like a technical task, but as you have seen throughout this guide, it is actually quite straightforward. Whether you are using a popular caching plugin, managing a setting through your hosting panel, purging your CDN, or simply refreshing your browser – each method follows a simple pattern: find the clear/purge option and click it.

The key things to remember are:

• Caching makes your site faster by saving copies of your pages.
• Caches can become stale after updates, edits, or changes.
• There are multiple cache layers: plugin, server, CDN, and browser.
• Clearing cache is safe as long as you do it thoughtfully.
• Use preloading when possible to avoid performance dips.
• Test your site in an incognito window after clearing cache.

With this knowledge in hand, you are fully equipped to manage your WordPress cache like a pro – keeping your site fast, fresh, and reliable for every visitor who comes your way. Happy caching!

About the Author

Jay Patel is the Founder of XSquareSEO, a full-service SEO agency with experience in on-page SEO, eCommerce SEO, link building, technical SEO, SaaS SEO, and local SEO. For more information, feel free to contact us. 

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