This is how you can increase the WordPress memory limit.

To increase the Word­Press memo­ry limit on your web­site, you just need to modi­fy the wp-config.php con­fi­gu­ra­ti­on file. To do this, add the fol­lo­wing line of code:

define('WP_MEMORY_LIMIT', '256M');

The 256M then stands for 256 MB. Of cour­se, you can also enter ano­ther num­ber, such as 64M, 128M or 512M.

The maxi­mum amount of memo­ry you can set depends on your hos­ting pro­vi­der. For a web hos­ting, the available RAM is usual­ly bet­ween 64 and 512 MB. With a vSer­ver, Mana­ged Ser­ver or Dedi­ca­ted Ser­ver, the value is typi­cal­ly much hig­her or can be set indi­vi­du­al­ly.

This is how you can increase the memory additionally for the WP Dashboard (backend) on WordPress #

In addi­ti­on to the default set­ting, you can also increase the memo­ry only for the admin set­tings of your Word­Press web­site. For this pur­po­se, the­re is the fol­lo­wing code line, which you store in the wp-config.php:

define('WP_MAX_MEMORY_LIMIT', '256M')

Again, you can adjust the memo­ry as you wish, as long as your hos­ter sup­ports it. The set­ting only affects the backend of Word­Press.

How to find out how much memory is available for your WordPress website #

To find out how much memo­ry you have available, you can eit­her check your hos­ting con­tract or view the PHP info file.

To dis­play the PHP info file, crea­te a new PHP file in the root direc­to­ry of your Word­Press instal­la­ti­on, e.g. you can name it info.php. In the file, you add the fol­lo­wing con­tent:

<?php
phpinfo();
?>

Then save your file and access it from your brow­ser. If you have saved the file in the root direc­to­ry of your Word­Press instal­la­ti­on, the URL is: https://[your-domain]/info.php.

In the brow­ser, you can now see all PHP set­tings. That means also the “memory_limit”. The best is to use the search CTRL+F to search for the term. You will now see how much memo­ry you have available.