diff --git a/src/App.php b/src/App.php
index 962e50794c..12b1cb1356 100644
--- a/src/App.php
+++ b/src/App.php
@@ -51,13 +51,6 @@ class App
 	const CODENAME = 'Yellow Archangel';
 	const VERSION  = '2024.09-dev';
 
-	// Allow themes to control internal parameters
-	// by changing App values in theme.php
-	private $theme_info = [
-		'videowidth'        => 425,
-		'videoheight'       => 350,
-	];
-
 	/**
 	 * @var Mode The Mode of the Application
 	 */
@@ -220,19 +213,28 @@ class App
 		return $this->appHelper->getQueueValue($index);
 	}
 
+	/**
+	 * @deprecated 2024.12 Use AppHelper::setThemeInfoValue() instead
+	 */
 	public function setThemeInfoValue(string $index, $value)
 	{
-		$this->theme_info[$index] = $value;
+		$this->appHelper->setThemeInfoValue($index, $value);
 	}
 
+	/**
+	 * @deprecated 2024.12 Use AppHelper::getThemeInfo() instead
+	 */
 	public function getThemeInfo()
 	{
-		return $this->theme_info;
+		return $this->appHelper->getThemeInfo();
 	}
 
+	/**
+	 * @deprecated 2024.12 Use AppHelper::getThemeInfoValue() instead
+	 */
 	public function getThemeInfoValue(string $index, $default = null)
 	{
-		return $this->theme_info[$index] ?? $default;
+		return $this->appHelper->getThemeInfoValue($index, $default);
 	}
 
 	/**
diff --git a/src/AppHelper.php b/src/AppHelper.php
index d44c2f3a31..e9cf6c9167 100644
--- a/src/AppHelper.php
+++ b/src/AppHelper.php
@@ -45,6 +45,13 @@ final class AppHelper
 	/** @var string The name of the current mobile theme */
 	private $currentMobileTheme;
 
+	// Allow themes to control internal parameters
+	// by changing App values in theme.php
+	private $theme_info = [
+		'videowidth' => 425,
+		'videoheight' => 350,
+	];
+
 	/**
 	 * @var Database The Friendica database connection
 	 */
@@ -228,7 +235,7 @@ final class AppHelper
 	 *
 	 * @param string $theme Name of current theme
 	 */
-	public function setCurrentTheme(string $theme)
+	public function setCurrentTheme(string $theme): void
 	{
 		$this->currentTheme = $theme;
 	}
@@ -238,11 +245,26 @@ final class AppHelper
 	 *
 	 * @param string $theme Name of current mobile theme
 	 */
-	public function setCurrentMobileTheme(string $theme)
+	public function setCurrentMobileTheme(string $theme): void
 	{
 		$this->currentMobileTheme = $theme;
 	}
 
+	public function setThemeInfoValue(string $index, $value): void
+	{
+		$this->theme_info[$index] = $value;
+	}
+
+	public function getThemeInfo(): array
+	{
+		return $this->theme_info;
+	}
+
+	public function getThemeInfoValue(string $index, $default = null)
+	{
+		return $this->theme_info[$index] ?? $default;
+	}
+
 	/**
 	 * Computes the current theme name based on the node settings, the page owner settings and the user settings
 	 *