WordPress relies on PHP memory to run core functions, themes, plugins, page builders, WooCommerce, imports, updates, and other admin tasks. If your site does not have enough available memory, you may experience errors, slow performance, failed updates, incomplete saves, or blank pages.
Increasing the WordPress memory limit gives your site more resources to complete these tasks properly. This is especially useful for larger websites, online stores, membership sites, multilingual sites, or sites using advanced themes, builders, and multiple plugins.