Is your WordPress dashboard loading painfully slowly? Does it take forever for admin screens to appear or update? A sluggish WordPress admin area can be incredibly frustrating and hurt your productivity as you try to manage your website. Even worse, the same issues causing a slow WordPress admin are likely impacting the experience for your visitors as well.
Don‘t worry though – in this in-depth guide, we‘ll walk through how to properly diagnose what‘s causing your slow WordPress dashboard and the steps you can take to resolve the issues and get your site running smoothly again. We‘ll cover everything from testing tools to hosting upgrades to optimization tweaks. By the end, you‘ll have a lightning-fast WordPress dashboard that‘s a joy to use.
Let‘s get started!
Why is My WordPress Dashboard So Slow?
There are a number of potential causes for a sluggish WordPress admin area:
Limited server resources – Most WordPress hosting plans, especially on shared servers, allocate a set amount of resources in terms of CPU and RAM. As your WordPress site grows with more content, plugins, and traffic, it can start to push the limits of those resources. If your server doesn‘t have enough horsepower, it leads to slow loading across your entire site, backend and frontend.
Poorly coded plugins – Plugin code executes not just on your public-facing site but often in the admin area as well. If a plugin is poorly written or has compatibility issues, it can cause excessive load on your server as you navigate the WordPress dashboard.
Database overhead – Over time, your WordPress database accumulates transient data, post revisions, and other overhead that can slow down queries if not cleaned up periodically. Plugins like WooCommerce are notorious for cluttering up databases with extra data.
Outdated software – WordPress core, plugins, and themes receive updates that often include performance improvements and bug fixes. If you fall behind on updates, you miss out on those enhancements. The same goes for the PHP version used by your host. Newer PHP versions bring big speed boosts.
The good news is that with proper testing and some optimization tweaks, you can resolve most of these issues and get your WordPress admin area running like new again. Keep reading to learn how.
How to Test Your WordPress Admin Performance
Before we jump into the fixes, it‘s important to set a performance baseline for your WordPress admin area so you can objectively measure the impact of changes. The challenge is that most WordPress performance testing tools work on the public-facing frontend of your site. The WordPress admin is behind a login screen.
Luckily, every modern browser includes developer tools that allow you to easily audit any web page, including the WordPress dashboard. In Google Chrome, for example, simply right click anywhere on the page and choose "Inspect" to bring up the dev tools panel.
Inside the dev tools, navigate to the Lighthouse tab and click "Generate report". This will simulate loading the page while measuring key metrics like server response time and time to interactive. It also highlights which scripts and plugins are consuming the most resources.
Repeat this test on a few key admin screens like the post editor, plugins list, and WooCommerce orders (if applicable) to get a well-rounded baseline of your WordPress backend speed. Toggle the "Throttling" dropdown to simulate a slower mobile connection as well.
Make a note of your speed scores and the specific assets or plugins called out in the reports. Now as we go through the optimization steps below, you can rerun these tests and clearly see how performance improves.
Update Everything (WordPress, PHP, Plugins, Themes)
One of the easiest wins for WordPress performance is simply making sure everything is updated to the latest version. The WordPress core team, as well as reputable plugin and theme developers, are constantly working on performance enhancements that are then released as updates.
To see if any updates are available, navigate to Dashboard > Updates in the WordPress admin sidebar. If you see a notice about a new WordPress version, themes that need updating, or plugins with updates available, go ahead and run those updates. If you‘re not comfortable updating from the admin area, you can also update WordPress manually via FTP.
While you‘re at it, make sure your site is using an up-to-date version of PHP as well. WordPress officially recommends PHP 7.4 or higher for optimal performance and security. However, many budget hosting providers start new customers on much older versions by default.
You can check your site‘s current PHP version by going to Tools > Site Health and expanding the info tab. If you see a PHP version less than 7.4 (or ideally 8.0+), reach out to your host‘s support team about upgrading. Most quality hosts make this easy with a one-click PHP version switcher in the hosting dashboard.
Increase the PHP Memory Limit
While reviewing the Site Health page, also take note of the PHP memory limit. This tells you how much memory WordPress is allowed to consume while it generates pages. The recommended memory limit is 256MB or higher.
If you see a lower number reported, or notice any "PHP Fatal error: Allowed memory size of xxx bytes exhausted" errors while navigating the admin area, you‘ll want to increase the limit.
Some hosts have a PHP settings area where you can adjust memory limit with a single click. If yours does not, you‘ll need to manually increase the limit by adding the following line to your site‘s wp-config.php file via FTP or the file manager in your hosting panel:
define(‘WP_MEMORY_LIMIT‘, ‘256M‘);
Identify Slow Plugins With Query Monitor
If a plugin is badly coded, it can slow down your entire WordPress admin dashboard (not to mention your public facing pages). Some common issues include inefficient database queries, excessive external HTTP requests, and unoptimized JavaScript or CSS files.
The Query Monitor plugin makes it easy to spot performance issues while navigating the WordPress backend. Once activated, it adds a new admin bar menu that reports the page generation time, database queries, HTTP requests, and more.
Pay special attention to the Queries by Component section, which breaks down how many database queries each plugin is responsible for. If you notice a plugin with an excessive number of queries (or slow queries), consider deactivating it and measuring the impact on dashboard speed. If it‘s a necessary plugin, you may need to reach out to the developer about refactoring their code.
Implement Page Caching
Page caching is one of the most impactful optimizations you can make for WordPress performance. With caching in place, your server doesn‘t have to regenerate the page HTML from scratch on every visit. Instead, it can serve up a static cached version almost instantly.
There are many solid WordPress caching plugins to choose from, but we‘re big fans of WP Rocket for its ease of use and out-of-the-box performance gains. It‘s a premium plugin with prices starting at $49/year for a single site license.
Once WP Rocket is activated, it automatically applies sane caching defaults without any complex setup. Just make sure the "Enable caching for mobile devices" and "Enable caching for logged-in users" are checked to ensure the WordPress admin area is cached as well.
For free caching alternatives, try WP Super Cache or W3 Total Cache. They‘re a bit more hands-on in terms of setup but can still make a big difference in WordPress dashboard speed when configured properly.
Clean Up WooCommerce Bloat
By default, WooCommerce adds a lot of bells and whistles to the WordPress admin area – a dashboard widget with sales stats, an admin bar report, and numerous new settings screens. Many of these can be safely disabled if you don‘t need them.
Start by removing the WooCommerce dashboard widget via Screen Options on the upper right of the WordPress dashboard screen. Same goes for the Products admin bar report – go to WooCommerce > Settings > Advanced and check the option to disable it.
WooCommerce also adds a lot of clutter to your WordPress database over time in the form of transient records, order notes, and other metadata. If your store has been running for a while, this bloat can slow down queries site-wide.
To clean things up, install the free WP-Optimize plugin. Navigate to WP-Optimize > Database and select all the "Clean all transients" options, as well as "Redundant metadata", "Orphaned metadata", and "Orphaned variations". This will clear out unneeded records and give your database some breathing room.
Lock Down the WordPress Admin and Login
You might not think of security issues as being related to performance, but they absolutely can be. Spammers and botnets are constantly hammering WordPress sites with brute-force login attempts and malicious requests. Aside from being a security risk, this unwanted traffic can overload your server and slow down the WordPress dashboard.
One way to stop most of these bad actors in their tracks is by password-protecting the WordPress admin area and login page at the server level.
If your host uses cPanel, you can set this up easily right from the hosting dashboard. Navigate to cPanel > Security > Directory Privacy and select the /wp-admin/ directory. Check the box to "Password protect this directory" and assign a username and strong password.
The wp-login.php file requires a few extra steps since it lives in the WordPress root directory. First, create a new .htpasswd file in the root directory (right alongside the wp-admin and wp-includes directories). Paste in the following line:
yourusername:$apr1$jkG38Yz4$IMOJElMeYvyLFyQ1VbFer0
Replace "yourusername" with the username you want to use and generate an encrypted password to replace the gibberish-looking string using an online .htpasswd generator tool.
Then edit your site‘s .htaccess file (also in the root directory) and add the following to the very top:
AuthName "Private access"
AuthUserFile /path/to/your/.htpasswd
AuthType basic
Require valid-user
Replace "/path/to/your/.htpasswd" with the actual server path to the .htpasswd file you created a moment ago. Now your WordPress admin and login are hidden away from malicious bots and bad actors.
Adjust Autosave & Heartbeat Settings
WordPress includes some helpful features that keep your admin dashboard up-to-date in near real-time – autosave for posts and the heartbeat API for notifications. The catch is that these features send a lot of requests that can eat up resources and slow things down.
The easiest way to tame these features is with the free Heartbeat Control plugin. Once activated, head to Settings > Heartbeat Control and change the frequency for both post editing and the frontend/dashboard to something higher than the 15-60 second defaults – 120 seconds is a good middle ground.
If you‘d rather make the change manually, simply add the following to your site‘s wp-config.php file to change autosave to two-minute intervals:
define(‘AUTOSAVE_INTERVAL‘, 120 );
And this code will change the heartbeat frequency to two minutes as well:
add_filter( ‘heartbeat_settings‘, ‘wpb_heartbeat_settings‘ );
function wpb_heartbeat_settings( $settings ) {
$settings[‘interval‘] = 120;
return $settings;
}
Upgrade Your Hosting Plan (Or Switch Hosts)
If you‘ve followed the steps above and are still seeing sluggish dashboard performance, your WordPress site may simply be outgrowing your current hosting plan. Remember, most performance optimizations can only get you so far if your server is starved for resources.
Upgrading to a plan with more CPU and RAM can do wonders for WordPress admin speed. If you‘re currently on shared hosting, consider making the leap to a VPS or managed WordPress plan. The extra horsepower will be a night and day difference.
Some of our favorite WordPress hosts include:
- Bluehost – affordable shared and WordPress plans with an easy onboarding experience
- SiteGround – high-performance shared and cloud hosting optimized for WordPress
- WP Engine – premium managed WordPress hosting with best-in-class speed and support
Whichever route you choose, make sure to thoroughly test your WordPress admin speed before and after the change to quantify the impact. A faster dashboard (and website) awaits!
Enjoy Your Speedy WordPress Dashboard
A slow WordPress admin dashboard can be incredibly frustrating, but with the tips above you should be well on your way to a more responsive backend. While some of the techniques might seem advanced at first glance, just take it step-by-step and don‘t be afraid to reach out to your host‘s support team for help along the way.
Even if you only implement a few of these changes, you should start to see a noticeable improvement in how quickly the WordPress dashboard loads and responds. Aim for a Lighthouse performance score of 90+ and you‘ll be flying through WordPress admin tasks with a smile.
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