diff --git a/src/Output/QRImage.php b/src/Output/QRImage.php
index f642cf61c..7e3d2fd36 100644
--- a/src/Output/QRImage.php
+++ b/src/Output/QRImage.php
@@ -140,7 +140,7 @@ class QRImage extends QROutputAbstract{
 		ob_start();
 
 		try{
-			call_user_func([$this, $this->options->outputType ?? QRCode::OUTPUT_IMAGE_PNG]);
+			call_user_func([$this, $this->outputMode ?? QRCode::OUTPUT_IMAGE_PNG]);
 		}
 		// not going to cover edge cases
 		// @codeCoverageIgnoreStart
diff --git a/src/Output/QRMarkup.php b/src/Output/QRMarkup.php
index 425a1acdd..86a45a445 100644
--- a/src/Output/QRMarkup.php
+++ b/src/Output/QRMarkup.php
@@ -21,17 +21,10 @@ class QRMarkup extends QROutputAbstract{
 
 	/**
 	 * @return string
-	 * @throws \chillerlan\QRCode\Output\QRCodeOutputException
 	 */
 	public function dump(){
 
-		if($this->options->cachefile !== null && !is_writable(dirname($this->options->cachefile))){
-			throw new QRCodeOutputException('Could not write data to cache file: '.$this->options->cachefile);
-		}
-
-		$data = $this->options->outputType === QRCode::OUTPUT_MARKUP_HTML
-			? $this->toHTML()
-			: $this->toSVG();
+		$data = call_user_func([$this, $this->outputMode ?? QRCode::OUTPUT_MARKUP_SVG]);
 
 		if($this->options->cachefile !== null){
 			$this->saveToFile($data);
@@ -43,7 +36,7 @@ class QRMarkup extends QROutputAbstract{
 	/**
 	 * @return string|bool
 	 */
-	protected function toHTML(){
+	protected function html(){
 		$html = '';
 
 		foreach($this->matrix->matrix() as $row){
@@ -68,7 +61,7 @@ class QRMarkup extends QROutputAbstract{
 	 *
 	 * @return string|bool
 	 */
-	protected function toSVG(){
+	protected function svg(){
 		$scale  = $this->options->scale;
 		$length = $this->moduleCount * $scale;
 		$matrix = $this->matrix->matrix();
diff --git a/src/Output/QROutputAbstract.php b/src/Output/QROutputAbstract.php
index 498b4bac6..c9f206f4e 100644
--- a/src/Output/QROutputAbstract.php
+++ b/src/Output/QROutputAbstract.php
@@ -12,7 +12,9 @@
 
 namespace chillerlan\QRCode\Output;
 
-use chillerlan\QRCode\{Data\QRMatrix, QROptions};
+use chillerlan\QRCode\{
+	Data\QRMatrix, QRCode, QROptions
+};
 
 /**
  *
@@ -34,6 +36,11 @@ abstract class QROutputAbstract implements QROutputInterface{
 	 */
 	protected $options;
 
+	/**
+	 * @var string
+	 */
+	protected $outputMode;
+
 	/**
 	 * QROutputAbstract constructor.
 	 *
@@ -44,16 +51,29 @@ abstract class QROutputAbstract implements QROutputInterface{
 		$this->options     = $options;
 		$this->matrix      = $matrix;
 		$this->moduleCount = $this->matrix->size();
+
+		$class = get_called_class();
+
+		if(array_key_exists($class, QRCode::OUTPUT_MODES) && in_array($this->options->outputType, QRCode::OUTPUT_MODES[$class])){
+			$this->outputMode = $this->options->outputType;
+		}
+
 	}
 
 	/**
 	 * @see file_put_contents()
 	 *
 	 * @param string $data
-
+	 *
 	 * @return bool|int
+	 * @throws \chillerlan\QRCode\Output\QRCodeOutputException
 	 */
 	protected function saveToFile(string $data) {
+
+		if(!is_writable(dirname($this->options->cachefile))){
+			throw new QRCodeOutputException('Could not write data to cache file: '.$this->options->cachefile);
+		}
+
 		return file_put_contents($this->options->cachefile, $data);
 	}
 
diff --git a/src/Output/QRString.php b/src/Output/QRString.php
index 8cb367a24..093722112 100644
--- a/src/Output/QRString.php
+++ b/src/Output/QRString.php
@@ -23,17 +23,9 @@ class QRString extends QROutputAbstract{
 	 * @return string
 	 */
 	public function dump():string{
-
-		$data = $this->options->outputType === QRCode::OUTPUT_STRING_JSON
-			? json_encode($this->matrix->matrix())
-			: $this->toString();
+		$data = call_user_func([$this, $this->outputMode ?? QRCode::OUTPUT_STRING_TEXT]);
 
 		if($this->options->cachefile !== null){
-
-			if(!is_writable(dirname($this->options->cachefile))){
-				throw new QRCodeOutputException('Could not write data to cache file: '.$this->options->cachefile);
-			}
-
 			$this->saveToFile($data);
 		}
 
@@ -43,7 +35,7 @@ class QRString extends QROutputAbstract{
 	/**
 	 * @return string
 	 */
-	protected function toString():string{
+	protected function text():string{
 		$str = [];
 
 		foreach($this->matrix->matrix() as $row){
@@ -68,4 +60,8 @@ class QRString extends QROutputAbstract{
 		return implode($this->options->eol, $str);
 	}
 
+	protected function json(){
+		return json_encode($this->matrix->matrix());
+	}
+
 }