diff --git a/README.md b/README.md
index e80616c..e1337c6 100644
--- a/README.md
+++ b/README.md
@@ -66,10 +66,11 @@ You can set the quality of compression from 0 to 100:
 $pdf->setCompressionQuality(100); // sets the compression quality to maximum
 ```
 
-You can create a thumbnail of the pdf:
+You can specify the width of the resulting image:
 ```php
-$pdf->setThumbnailWidth(400)
-    ->saveImage($pathToWhereImageShouldBeStored);
+$pdf
+   ->width(400)
+   ->saveImage($pathToWhereImageShouldBeStored);
 ```
 
 ## Issues regarding Ghostscript
diff --git a/src/Pdf.php b/src/Pdf.php
index f2247bc..2127d60 100644
--- a/src/Pdf.php
+++ b/src/Pdf.php
@@ -168,13 +168,13 @@ public function getImageData(string $pathToImage): Imagick
         if (is_int($this->layerMethod)) {
             $this->imagick = $this->imagick->mergeImageLayers($this->layerMethod);
         }
-        
+
         if ($this->thumbnailWidth !== null) {
             $this->imagick->thumbnailImage($this->thumbnailWidth, 0);
         }
 
         $this->imagick->setFormat($this->determineOutputFormat($pathToImage));
-        
+
         return $this->imagick;
     }
 
@@ -192,7 +192,7 @@ public function setCompressionQuality(int $compressionQuality)
         return $this;
     }
 
-    public function setThumbnailWidth(int $thumbnailWidth)
+    public function width(int $thumbnailWidth)
     {
         $this->thumbnailWidth = $thumbnailWidth;
 
diff --git a/tests/PdfTest.php b/tests/PdfTest.php
index 0c6bdd3..9c7646d 100644
--- a/tests/PdfTest.php
+++ b/tests/PdfTest.php
@@ -54,7 +54,7 @@
     $imagick = (new Pdf($this->testFile))
         ->setOutputFormat('png')
         ->getImageData('test.png');
-    
+
     expect($imagick->getFormat())->toEqual('png');
     expect($imagick->getFormat())->not->toEqual('jpg');
 });
@@ -65,7 +65,7 @@
         ->setResolution(72)
         ->getImageData('test.jpg')
         ->getImageResolution();
-    
+
     expect($image['x'])->toEqual(72);
     expect($image['y'])->toEqual(72);
 });
@@ -80,9 +80,9 @@
 
 it('will create a thumbnail at specified width', function()  {
    $imagick = (new Pdf($this->multipageTestFile))
-      ->setThumbnailWidth(400)
+      ->width(400)
       ->getImageData('test.jpg')
       ->getImageGeometry();
 
     expect($imagick['width'])->toBe(400);
-});
\ No newline at end of file
+});