WordPress runs out of memory, causing errors or slow performance.
Memory Limit Too Low
Key Points: Site breaks or slows down under load due to low PHP memory allocation.
You install a theme, upload an image, or just open the Customizer — and WordPress faints. White screen, fatal error, or random crashing. Sounds like it hit the memory ceiling.
🚫 Common Symptoms
- White Screen of Death (WSOD)
- “Allowed memory size exhausted” errors
- Admin panel loading endlessly
🛠️ Increase the Limit
- Edit
wp-config.php:define('WP_MEMORY_LIMIT', '256M'); - Or update
php.ini:memory_limit = 256M - For stubborn hosts, ask support to increase it on the server level
💡 Good Practice
Don’t just raise the limit forever — track down what’s eating memory. Heavy page builders, image processors, or plugin loops are common culprits.