How to Increase Your WordPress Memory Limit for Optimal Performance

WordPress is a powerful content management system (CMS) that allows users to create and manage their websites with ease. However, like any other software, WordPress can experience performance issues if it is not configured correctly. One of the most common issues that users face is a low memory limit. In this article, we will discuss the WordPress memory limit, why it’s important to increase it, and how you can increase it for optimal performance.

What is the WordPress Memory Limit?

The WordPress memory limit is the maximum amount of memory that your website can use. This limit is set by your web hosting provider and can be adjusted in the WordPress configuration file. When your website exceeds the memory limit, it can cause your website to slow down or even crash.

Why Should You Increase Your WordPress Memory Limit?

Increasing your WordPress memory limit is crucial for a few reasons. Firstly, it can improve your website’s performance and speed. This is particularly important for websites with numerous plugins and features. Secondly, it can prevent your website from crashing due to a lack of memory. Finally, it can ensure that your website is secure and stable.

How to Increase Your WordPress Memory Limit

There are several ways to increase your WordPress memory limit. The most common method is by editing the wp-config.php file. Here’s how you can do it:

Step 1: Access the wp-config.php file You can access the wp-config.php file through your hosting control panel or using a File Transfer Protocol (FTP) client.

Step 2: Edit the wp-config.php file Once you have accessed the wp-config.php file, add the following code to the bottom of the file:

define(‘WP_MEMORY_LIMIT’, ‘256M’);

This code increases the memory limit to 256MB, but you can adjust the limit to your specific needs. For instance, you can increase it to 512MB or even higher if your website requires more memory.

Step 3: Save and upload the file Save the changes you made to the wp-config.php file and upload it to your website. Once you have done that, your website’s memory limit will be increased.

Another way to increase your WordPress memory limit is to contact your web hosting provider. Most hosting providers offer the ability to increase your website’s memory limit through their control panel or by contacting customer support.

Lastly, you can also increase the memory limit by installing a plugin. Some of the popular plugins for increasing the WordPress memory limit include WP Memory Usage, Memory Viewer, and Increase Memory Limit. These plugins can help you monitor your website’s memory usage and increase the memory limit accordingly.

Technical Tips

here are some technical tips for increasing your WordPress memory limit:

  1. Check your current memory limit: Before increasing your memory limit, it’s a good idea to check your current limit. You can do this by going to the WordPress dashboard and navigating to Tools > Site Health > Info. Look for the “WP Memory Limit” value to see your current memory limit.
  2. Use a child theme: If you are using a custom theme, it’s a good idea to create a child theme before editing the wp-config.php file. This will ensure that any changes you make will not be lost when the theme is updated.
  3. Use a code editor: When editing the wp-config.php file, it’s best to use a code editor like Sublime Text or Visual Studio Code. These editors will highlight syntax errors and make it easier to find and fix any mistakes.
  4. Increase the memory limit gradually: It’s best to increase the memory limit gradually until you find the right amount for your website. Start with a small increase, like 128MB, and test your website to see if it’s running smoothly. If not, increase the limit again until you find the right balance.
  5. Monitor your website: After increasing your memory limit, it’s important to monitor your website to ensure that it’s running smoothly. Use a tool like Pingdom or GTmetrix to test your website’s performance and identify any issues.
  6. Use a caching plugin: A caching plugin like WP Super Cache or W3 Total Cache can help improve your website’s performance by caching static files and reducing server load. This can help reduce the amount of memory your website uses and improve overall performance.

By following these technical tips, you can increase your WordPress memory limit and improve your website’s performance.

Advanced Tips
  1. Use Efficient Code: Writing efficient code can help reduce the memory usage of your website. This includes using optimized queries, minimizing database calls, and reducing the number of plugins used.
  2. Use Caching: Caching can help reduce the number of database calls and improve the performance of your website. WordPress has several caching plugins available that can help with this.
  3. Optimize Images: Large images can take up a lot of memory and slow down your website. Make sure to optimize your images before uploading them to your website. There are several image optimization plugins available for WordPress that can help with this.
  4. Limit Post Revisions: By default, WordPress saves a revision of each post every time it is saved. This can quickly add up and take up a lot of memory. You can limit the number of post revisions saved or disable them altogether by adding the following code to your wp-config.php file:

define( ‘WP_POST_REVISIONS’, 3 );

This code will limit the number of post revisions saved to three.

  1. Disable Unused Features: WordPress comes with many features and functions that may not be necessary for your website. By disabling unused features, you can reduce the memory usage of your website. This can be done by adding the following code to your wp-config.php file:


This code will disable the fatal error handler, which can help reduce memory usage.

By implementing these technical tips, you can help optimize the memory usage of your WordPress website and improve its performance.


  1. How do I know if I need to increase my WordPress memory limit?
    If your website is running slowly, experiencing errors, or crashing, it could be due to a low memory limit. You can check your website’s memory usage in the WordPress dashboard under “Tools” > “Site Health” > “Info” > “Server”. If your memory usage is close to or exceeding the limit, it’s time to increase the memory limit.
  2. What is the default WordPress memory limit?
    The default WordPress memory limit is 40MB, which is usually enough for a basic website with minimal plugins. However, if you’re running a more complex website with many plugins or high traffic, you’ll need to increase the limit.
  3. Can I increase the WordPress memory limit on shared hosting?
    Yes, you can increase the memory limit on shared hosting, but the amount you can increase it to may be limited. Contact your hosting provider for more information.
  4. What if increasing the memory limit doesn’t fix my website’s performance issues?
    Increasing the memory limit is just one way to improve website performance. If your website is still experiencing issues after increasing the memory limit, you may need to optimize your website in other ways, such as by optimizing images, minifying CSS and JavaScript, and enabling caching.
  5. Can I decrease the WordPress memory limit?
    Yes, you can decrease the memory limit, but it’s generally not recommended unless you’re troubleshooting specific issues.
  6. Will increasing the memory limit affect my website’s SEO?
    No, increasing the memory limit should not affect your website’s SEO. However, if your website’s performance improves, it could indirectly impact your SEO by improving user experience and decreasing bounce rates.

Increasing your WordPress memory limit is an important step in ensuring that your website runs smoothly and efficiently. By following the steps outlined in this article, you can easily increase the memory limit for your WordPress website. If you need help with this process, please contact AS6 Digital Agency for assistance.


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About Amoi Blake-Amaro

Media graduate with a concentration in advertising from Oral Roberts University. Having worked with a diverse range of clients, from entertainment to e-commerce, coaching to health, I've learned the importance of creating custom solutions that reflect each client's unique brand and effectively communicate their message to their target audience.
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