# elementor/3.34.3/core/frontend/performance.php

Elementor Website Builder – more than just a page builder, version 3.34.3. 31 lines.

- Page: https://pluginprobe.com/plugins/elementor/3.34.3/code/core/frontend/performance.php
- Raw: https://pluginprobe.com/plugins/elementor/3.34.3/raw/core/frontend/performance.php
- Modified: 2026-01-26T15:06:04+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/elementor/3.34.3/code/core/frontend/performance.php#L10-L20`.

```php
<?php
namespace Elementor\Core\Frontend;

use Elementor\Plugin;

class Performance {

	private static $use_style_controls = false;

	private static $is_frontend = null;

	public static function set_use_style_controls( bool $is_use ): void {
		static::$use_style_controls = $is_use;
	}

	public static function is_use_style_controls(): bool {
		return static::$use_style_controls;
	}

	public static function should_optimize_controls() {
		if ( null === static::$is_frontend ) {
			static::$is_frontend = (
				! is_admin()
				&& ! Plugin::$instance->preview->is_preview_mode()
			);
		}

		return static::$is_frontend;
	}
}

```