How to Speed Up the WordPress Admin Dashboard

A slow WordPress admin is usually caused by too many plugins, a bloated database or insufficient PHP memory.

Increase PHP Memory

define('WP_MEMORY_LIMIT', '256M');
define('WP_MAX_MEMORY_LIMIT', '512M');

Clean Database

wp post delete $(wp post list --post_type=revision --format=ids) --force
wp transient delete --expired --all
wp db optimize

Disable Admin Heartbeat

add_action('init', function() {
    if (is_admin()) {
        wp_deregister_script('heartbeat');
    }
});

Conclusion

A fast admin dashboard improves productivity significantly. Our team resolves WordPress performance issues including admin slowness.