diff --git a/docs/changes/1.1.0.md b/docs/changes/1.1.0.md
index 81ba6ae1e..2a5ae50f6 100644
--- a/docs/changes/1.1.0.md
+++ b/docs/changes/1.1.0.md
@@ -20,6 +20,8 @@
 
 ## Improvements
 - Slide : Raised max value for identifier rand call - [@Scheissy](https://github.com/Scheissy) in [#777](https://github.com/PHPOffice/PHPPresentation/pull/777)
+- Document Properties : Support for Revision & Status (PowerPoint2007 Reader/Writer) - [@devX2712](https://github.com/devX2712) in [#788](https://github.com/PHPOffice/PHPPresentation/pull/787)
+- Presentation Properties : Added support to define content of the thumbnail - [@devX2712](https://github.com/devX2712) in [#788](https://github.com/PHPOffice/PHPPresentation/pull/787)
 
 ## Bugfixes
 
diff --git a/docs/usage/presentation.md b/docs/usage/presentation.md
index 03080aa1c..a06e0958b 100644
--- a/docs/usage/presentation.md
+++ b/docs/usage/presentation.md
@@ -62,6 +62,8 @@ $properties->setCreated(mktime(0, 0, 0, 3, 12, 2014));
 $properties->setModified(mktime(0, 0, 0, 3, 14, 2014));
 $properties->setSubject('My subject');
 $properties->setKeywords('my, key, word');
+$properties->setStatus('Work in Progress');
+$properties->setRevision('Version 1.2.3');
 ```
 
 ### Custom Properties
@@ -203,16 +205,44 @@ echo $properties->getSlideshowType();
 
 You can define the thumbnail of the presentation with the method `setThumbnailPath`.
 
+
+#### From a file
 ``` php
 <?php
 
+use PhpOffice\PhpPresentation\PresentationProperties;
+
 $presentation = new PhpPresentation();
 
 $properties = $presentation->getPresentationProperties();
 // Set path of the thumbnail
-$properties->setThumbnailPath(__DIR__.'\resources\phppowerpoint_logo.gif');
+$properties->setThumbnailPath(
+    __DIR__.'\resources\phppowerpoint_logo.gif',
+    PresentationProperties::THUMBNAIL_FILE
+);
 // Get path of the thumbnail
 echo $properties->getThumbnailPath();
+// Get content of the thumbnail
+echo $properties->getThumbnail();
+```
+
+#### From the content of the file
+``` php
+<?php
+
+use PhpOffice\PhpPresentation\PresentationProperties;
+
+$presentation = new PhpPresentation();
+
+$properties = $presentation->getPresentationProperties();
+// Set path of the thumbnail
+$properties->setThumbnailPath(
+    '',
+    PresentationProperties::THUMBNAIL_DATA,
+    file_get_contents(__DIR__.'\resources\phppowerpoint_logo.gif')
+);
+// Get content of the thumbnail
+echo $properties->getThumbnail();
 ```
 
 ### Zoom
diff --git a/src/PhpPresentation/DocumentProperties.php b/src/PhpPresentation/DocumentProperties.php
index c6a24e453..96d545b84 100644
--- a/src/PhpPresentation/DocumentProperties.php
+++ b/src/PhpPresentation/DocumentProperties.php
@@ -102,11 +102,18 @@ class DocumentProperties
     private $company;
     
     /**
-     * revision
+     * Revision.
      *
      * @var string
      */
     private $revision;
+
+    /**
+     * Status.
+     *
+     * @var string
+     */
+    private $status;
     
     /**
      * Custom Properties.
@@ -116,14 +123,7 @@ class DocumentProperties
     private $customProperties = [];
 
     /**
-     * status
-     *
-     * @var string
-     */
-    private $status;
-
-    /**
-     * Create a new \PhpOffice\PhpPresentation\DocumentProperties
+     * Create a new \PhpOffice\PhpPresentation\DocumentProperties.
      */
     public function __construct()
     {
@@ -139,7 +139,7 @@ public function __construct()
         $this->category = '';
         $this->company = 'Microsoft Corporation';
         $this->revision = '';
-        $this->status         = '';
+        $this->status  = '';
     }
 
     /**
@@ -479,7 +479,7 @@ public function getRevision(): string
     }
 
     /**
-     * Set Revision
+     * Set Revision.
      */
     public function setRevision(string $pValue = ''): self
     {
@@ -489,22 +489,17 @@ public function setRevision(string $pValue = ''): self
     }
 
     /**
-     * Get Status
-     *
-     * @return string
+     * Get Status.
      */
-    public function getStatus()
+    public function getStatus(): string
     {
         return $this->status;
     }
 
     /**
-     * Set Status
-     *
-     * @param  string                           $pValue
-     * @return \PhpOffice\PhpPresentation\DocumentProperties
+     * Set Status.
      */
-    public function setStatus($pValue = '')
+    public function setStatus(string $pValue = ''): self
     {
         $this->status = $pValue;
 
diff --git a/src/PhpPresentation/PresentationProperties.php b/src/PhpPresentation/PresentationProperties.php
index 63eca8fb5..ff2cc5aaa 100644
--- a/src/PhpPresentation/PresentationProperties.php
+++ b/src/PhpPresentation/PresentationProperties.php
@@ -30,8 +30,8 @@ class PresentationProperties
     public const VIEW_SLIDE_SORTER = 'sldSorterView';
     public const VIEW_SLIDE_THUMBNAIL = 'sldThumbnailView';
 
-    public const THUMBNAIL_FILE = 'file'; // Thumbnail path is out of PPT
-    public const THUMBNAIL_ZIP = 'zip'; // Thumbnail path point to an image store into file loaded
+    public const THUMBNAIL_FILE = 'file';
+    public const THUMBNAIL_DATA = 'data';
 
     /**
      * @var array<int, string>
@@ -72,17 +72,17 @@ class PresentationProperties
      */
     protected $markAsFinal = false;
 
-    /*
-     * @var string Define the thumbnail content (if content into zip file)
+    /**
+     * @var string|null Define the thumbnail content (if content into zip file)
      */
     protected $thumbnail = null;
 
-    /*
-     * @var string Define the thumbnail place
+    /**
+     * @var string|null Define the thumbnail place
      */
-    protected $thumbnailPath = '';
+    protected $thumbnailPath = null;
 
-    /*
+    /**
      * @var string Define if thumbnail is out of PPT or previouly store into PPT
      */
     protected $thumbnailType = self::THUMBNAIL_FILE;
@@ -130,36 +130,38 @@ public function getThumbnailPath(): ?string
     }
     
     /**
-     * Return the content of thumbnail
-     *
-     * @return binary Content of image
+     * Return the content of thumbnail.
      */
-    public function getThumbnail()
+    public function getThumbnail(): ?string
     {
       // Return content of local file
       if ($this->getThumbnailType() == self::THUMBNAIL_FILE) {
-        if (file_exists($this->getThumbnailPath()))
+        if ($this->getThumbnailPath()) {
           return file_get_contents($this->getThumbnailPath());
+        }
+
+        return null;
       }
+
       // Return content of image stored into zip file
-      if ($this->getThumbnailType() == self::THUMBNAIL_ZIP) {
+      if ($this->getThumbnailType() == self::THUMBNAIL_DATA) {
         return $this->thumbnail;
       }
-      // Return null if no thumbnail
+
       return null;
     }
 
     /**
      * Define the path for the thumbnail file / preview picture.
      */
-    public function setThumbnailPath(string $path = '', $type = self::THUMBNAIL_FILE, $content = null)
+    public function setThumbnailPath(string $path = '', string $type = self::THUMBNAIL_FILE, string $content = null): self
     {
-        if (file_exists($path) && ($type == self::THUMBNAIL_FILE)) {
+        if (file_exists($path) && $type == self::THUMBNAIL_FILE) {
             $this->thumbnailPath = $path;
             $this->thumbnailType = $type;
         }
-        if (($path != '') && ($type == self::THUMBNAIL_ZIP)) {
-            $this->thumbnailPath = $path;
+        if ($content != '' && $type == self::THUMBNAIL_DATA) {
+            $this->thumbnailPath = '';
             $this->thumbnailType = $type;
             $this->thumbnail = $content;
         }
@@ -168,10 +170,9 @@ public function setThumbnailPath(string $path = '', $type = self::THUMBNAIL_FILE
     }
 
     /**
-     * Return the thumbnail type
-     * @return string
+     * Return the thumbnail type.
      */
-    public function getThumbnailType()
+    public function getThumbnailType(): string
     {
         return $this->thumbnailType;
     }
diff --git a/src/PhpPresentation/Reader/PowerPoint2007.php b/src/PhpPresentation/Reader/PowerPoint2007.php
index e619a2607..8fc009fc2 100644
--- a/src/PhpPresentation/Reader/PowerPoint2007.php
+++ b/src/PhpPresentation/Reader/PowerPoint2007.php
@@ -230,7 +230,7 @@ protected function loadDocumentProperties(string $sPart): void
                 '/cp:coreProperties/dcterms:modified' => 'setModified',
                 '/cp:coreProperties/cp:revision' => 'setRevision',
                 '/cp:coreProperties/cp:contentStatus' => 'setStatus',
-            );
+            ];
             $oProperties = $this->oPhpPresentation->getDocumentProperties();
             foreach ($arrayProperties as $path => $property) {
                 $oElement = $xmlReader->getElement($path);
@@ -913,15 +913,15 @@ protected function loadEffect(XMLReader $document, \DOMElement $nodeEffect)
               $effect = new \PhpOffice\PhpPresentation\Style\Effect($type);
               // load blur radius
               if ($node->hasAttribute('blurRad')) {
-                  $effect->setBlurRadius(CommonDrawing::emuToPixels($node->getAttribute('blurRad')));
+                  $effect->setBlurRadius(CommonDrawing::emuToPixels((int) $node->getAttribute('blurRad')));
               }
               // load distance
               if ($node->hasAttribute('dist')) {
-                  $effect->setDistance(CommonDrawing::emuToPixels($node->getAttribute('dist')));
+                  $effect->setDistance(CommonDrawing::emuToPixels((int) $node->getAttribute('dist')));
               }
               // load direction
               if ($node->hasAttribute('dir')) {
-                  $effect->setDirection(CommonDrawing::angleToDegrees($node->getAttribute('dir')));
+                  $effect->setDirection((int) CommonDrawing::angleToDegrees((int) $node->getAttribute('dir')));
               }
               // load alignment
               if ($node->hasAttribute('algn')) {
diff --git a/src/PhpPresentation/Style/Effect.php b/src/PhpPresentation/Style/Effect.php
index 5c25ca4f4..500ce891a 100644
--- a/src/PhpPresentation/Style/Effect.php
+++ b/src/PhpPresentation/Style/Effect.php
@@ -90,9 +90,9 @@ class Effect implements ComparableInterface
     /**
      * Hash index
      *
-     * @var string
+     * @var ?int
      */
-    private string $hashIndex;
+    private $hashIndex;
 
     /**
      * Create a new \PhpOffice\PhpPresentation\Shape\Effect instance
@@ -276,7 +276,7 @@ public function getAlpha():int
      *
      * @return string Hash code
      */
-    public function getHashCode()
+    public function getHashCode(): string
     {
         return md5($this->effectType . $this->blurRadius . $this->distance . $this->direction . $this->alignment . $this->color->getHashCode() . $this->alpha . __CLASS__);
     }
@@ -289,7 +289,7 @@ public function getHashCode()
      *
      * @return string Hash index
      */
-    public function getHashIndex()
+    public function getHashIndex(): ?int
     {
         return $this->hashIndex;
     }
diff --git a/src/PhpPresentation/Writer/PowerPoint2007/DocPropsCore.php b/src/PhpPresentation/Writer/PowerPoint2007/DocPropsCore.php
index 6df85cde0..d21f6863a 100644
--- a/src/PhpPresentation/Writer/PowerPoint2007/DocPropsCore.php
+++ b/src/PhpPresentation/Writer/PowerPoint2007/DocPropsCore.php
@@ -70,18 +70,17 @@ public function render(): ZipInterface
         // cp:keywords
         $objWriter->writeElement('cp:keywords', $this->oPresentation->getDocumentProperties()->getKeywords());
 
+        // cp:category
+        $objWriter->writeElement('cp:category', $this->oPresentation->getDocumentProperties()->getCategory());
+
         // cp:revision
         $objWriter->writeElement('cp:revision', $this->oPresentation->getDocumentProperties()->getRevision());
 
         // cp:contentStatus
-        $objWriter->writeElement('cp:contentStatus', $this->oPresentation->getDocumentProperties()->getStatus());
-
-        // cp:category
-        $objWriter->writeElement('cp:category', $this->oPresentation->getDocumentProperties()->getCategory());
-
         if ($this->oPresentation->getPresentationProperties()->isMarkedAsFinal()) {
-            // cp:contentStatus = Final
             $objWriter->writeElement('cp:contentStatus', 'Final');
+        } else {
+            $objWriter->writeElement('cp:contentStatus', $this->oPresentation->getDocumentProperties()->getStatus());
         }
 
         $objWriter->endElement();
diff --git a/src/PhpPresentation/Writer/PowerPoint2007/DocPropsThumbnail.php b/src/PhpPresentation/Writer/PowerPoint2007/DocPropsThumbnail.php
index 103309e5c..fde2f6f36 100644
--- a/src/PhpPresentation/Writer/PowerPoint2007/DocPropsThumbnail.php
+++ b/src/PhpPresentation/Writer/PowerPoint2007/DocPropsThumbnail.php
@@ -20,31 +20,15 @@
 namespace PhpOffice\PhpPresentation\Writer\PowerPoint2007;
 
 use PhpOffice\Common\Adapter\Zip\ZipInterface;
+use PhpOffice\PhpPresentation\PresentationProperties;
 
 class DocPropsThumbnail extends AbstractDecoratorWriter
 {
     public function render(): ZipInterface
     {
-        $pathThumbnail = $this->getPresentation()->getPresentationProperties()->getThumbnailPath();
-        $type = $this->getPresentation()->getPresentationProperties()->getThumbnailType();
-
-        // From local file
-        if ($pathThumbnail && $type == \PhpOffice\PhpPresentation\PresentationProperties::THUMBNAIL_FILE) {
-            $fileThumbnail = file_get_contents($pathThumbnail);
-            $gdImage = imagecreatefromstring($fileThumbnail);
-            if ($gdImage) {
-                ob_start();
-                imagejpeg($gdImage);
-                $imageContents = ob_get_contents();
-                ob_end_clean();
-                imagedestroy($gdImage);
-                $this->getZip()->addFromString('docProps/thumbnail.jpeg', $imageContents);
-            }
-        }
-  
-        // From ZIP original file
-        if ($pathThumbnail && $type == \PhpOffice\PhpPresentation\PresentationProperties::THUMBNAIL_ZIP) {
-            $gdImage = imagecreatefromstring($this->getPresentation()->getPresentationProperties()->getThumbnail());
+        $thumnbail = $this->getPresentation()->getPresentationProperties()->getThumbnail();
+        if ($thumnbail) {
+            $gdImage = imagecreatefromstring($thumnbail);
             if ($gdImage) {
                 ob_start();
                 imagejpeg($gdImage);
diff --git a/src/PhpPresentation/Writer/PowerPoint2007/Relationships.php b/src/PhpPresentation/Writer/PowerPoint2007/Relationships.php
index 804c175e2..7d652778c 100644
--- a/src/PhpPresentation/Writer/PowerPoint2007/Relationships.php
+++ b/src/PhpPresentation/Writer/PowerPoint2007/Relationships.php
@@ -63,29 +63,18 @@ protected function writeRelationships(): string
         $this->writeRelationship($objWriter, 4, 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/custom-properties', 'docProps/custom.xml');
 
         $idxRelation = 5;
-        // Thumbnail
-        $path = $this->getPresentation()->getPresentationProperties()->getThumbnailPath();
-        $type = $this->getPresentation()->getPresentationProperties()->getThumbnailType();
-        // From local file
-        if ($path && $type == \PhpOffice\PhpPresentation\PresentationProperties::THUMBNAIL_FILE) {
-            $pathThumbnail = file_get_contents($path);
-            $gdImage = imagecreatefromstring($pathThumbnail);
-            if ($gdImage) {
-                imagedestroy($gdImage);
-                // Relationship docProps/thumbnail.jpeg
-                $this->writeRelationship($objWriter, $idxRelation, 'http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail', 'docProps/thumbnail.jpeg');
-            }
-        }
-        // From ZIP original file
-        if ($path && $type == \PhpOffice\PhpPresentation\PresentationProperties::THUMBNAIL_ZIP) {
-            $gdImage = imagecreatefromstring($this->getPresentation()->getPresentationProperties()->getThumbnail());
+
+        // Relationship docProps/thumbnail.jpeg
+        $thumnbail = $this->getPresentation()->getPresentationProperties()->getThumbnail();
+        if ($thumnbail) {
+            $gdImage = imagecreatefromstring($thumnbail);
             if ($gdImage) {
                 imagedestroy($gdImage);
                 // Relationship docProps/thumbnail.jpeg
                 $this->writeRelationship($objWriter, $idxRelation, 'http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail', 'docProps/thumbnail.jpeg');
+                // $idxRelation++;
             }
         }
-        // ++$idxRelation
 
         $objWriter->endElement();
 
diff --git a/tests/PhpPresentation/Tests/DocumentPropertiesTest.php b/tests/PhpPresentation/Tests/DocumentPropertiesTest.php
index 5d0b37259..dd2a4d922 100644
--- a/tests/PhpPresentation/Tests/DocumentPropertiesTest.php
+++ b/tests/PhpPresentation/Tests/DocumentPropertiesTest.php
@@ -46,6 +46,8 @@ public function testGetSet(): void
             'keywords' => '',
             'category' => '',
             'company' => '',
+            'revision' => '',
+            'status' => '',
         ];
 
         foreach ($properties as $key => $val) {
diff --git a/tests/PhpPresentation/Tests/PresentationPropertiesTest.php b/tests/PhpPresentation/Tests/PresentationPropertiesTest.php
index db361430e..88b0920d7 100644
--- a/tests/PhpPresentation/Tests/PresentationPropertiesTest.php
+++ b/tests/PhpPresentation/Tests/PresentationPropertiesTest.php
@@ -130,14 +130,36 @@ public function testThumbnail(): void
 
         $object = new PresentationProperties();
         self::assertNull($object->getThumbnailPath());
-        self::assertInstanceOf(PresentationProperties::class, $object->setThumbnailPath('AAAA'));
+        self::assertInstanceOf(PresentationProperties::class, $object->setThumbnailPath('AAAA', PresentationProperties::THUMBNAIL_FILE));
         self::assertNull($object->getThumbnailPath());
         self::assertInstanceOf(PresentationProperties::class, $object->setThumbnailPath());
         self::assertNull($object->getThumbnailPath());
-        self::assertInstanceOf(PresentationProperties::class, $object->setThumbnailPath($imagePath));
+        self::assertInstanceOf(PresentationProperties::class, $object->setThumbnailPath($imagePath, PresentationProperties::THUMBNAIL_FILE));
         self::assertEquals($imagePath, $object->getThumbnailPath());
+        self::assertIsString($object->getThumbnail());
         self::assertInstanceOf(PresentationProperties::class, $object->setThumbnailPath());
         self::assertEquals($imagePath, $object->getThumbnailPath());
+        self::assertIsString($object->getThumbnail());
+    }
+
+    public function testThumbnailFileNotExisting(): void
+    {
+        $imagePath = PHPPRESENTATION_TESTS_BASE_DIR . DIRECTORY_SEPARATOR . 'resources' . DIRECTORY_SEPARATOR . 'images' . DIRECTORY_SEPARATOR . 'NotExistingFile.png';
+
+        $object = new PresentationProperties();
+        self::assertInstanceOf(PresentationProperties::class, $object->setThumbnailPath($imagePath, PresentationProperties::THUMBNAIL_FILE));
+        self::assertNull($object->getThumbnailPath());
+        self::assertNull($object->getThumbnail());
+    }
+
+    public function testThumbnailFileData(): void
+    {
+        $imagePath = PHPPRESENTATION_TESTS_BASE_DIR . DIRECTORY_SEPARATOR . 'resources' . DIRECTORY_SEPARATOR . 'images' . DIRECTORY_SEPARATOR . 'PhpPresentationLogo.png';
+
+        $object = new PresentationProperties();
+        self::assertInstanceOf(PresentationProperties::class, $object->setThumbnailPath($imagePath, PresentationProperties::THUMBNAIL_DATA, file_get_contents($imagePath)));
+        self::assertEquals('', $object->getThumbnailPath());
+        self::assertIsString($object->getThumbnail());
     }
 
     public function testZoom(): void
diff --git a/tests/PhpPresentation/Tests/Reader/PowerPoint2007Test.php b/tests/PhpPresentation/Tests/Reader/PowerPoint2007Test.php
index 8d04038ef..51b6ac3bf 100644
--- a/tests/PhpPresentation/Tests/Reader/PowerPoint2007Test.php
+++ b/tests/PhpPresentation/Tests/Reader/PowerPoint2007Test.php
@@ -101,6 +101,8 @@ public function testLoadFile01(): void
         self::assertEquals('Sample 02 Description', $oPhpPresentation->getDocumentProperties()->getDescription());
         self::assertEquals('office 2007 openxml libreoffice odt php', $oPhpPresentation->getDocumentProperties()->getKeywords());
         self::assertEquals('Sample Category', $oPhpPresentation->getDocumentProperties()->getCategory());
+        self::assertEquals('', $oPhpPresentation->getDocumentProperties()->getRevision());
+        self::assertEquals('', $oPhpPresentation->getDocumentProperties()->getStatus());
         self::assertIsArray($oPhpPresentation->getDocumentProperties()->getCustomProperties());
         self::assertCount(0, $oPhpPresentation->getDocumentProperties()->getCustomProperties());
 
diff --git a/tests/PhpPresentation/Tests/Writer/PowerPoint2007/DocPropsCoreTest.php b/tests/PhpPresentation/Tests/Writer/PowerPoint2007/DocPropsCoreTest.php
index 3a87a2613..5c79a1ee8 100644
--- a/tests/PhpPresentation/Tests/Writer/PowerPoint2007/DocPropsCoreTest.php
+++ b/tests/PhpPresentation/Tests/Writer/PowerPoint2007/DocPropsCoreTest.php
@@ -25,13 +25,6 @@ class DocPropsCoreTest extends PhpPresentationTestCase
 {
     protected $writerName = 'PowerPoint2007';
 
-    public function testRender(): void
-    {
-        $this->assertZipFileExists('docProps/core.xml');
-        $this->assertZipXmlElementNotExists('docProps/core.xml', '/cp:coreProperties/cp:contentStatus');
-        $this->assertIsSchemaECMA376Valid();
-    }
-
     public function testDocumentProperties(): void
     {
         $expected = 'aAbBcDeE';
@@ -42,7 +35,9 @@ public function testDocumentProperties(): void
             ->setDescription($expected)
             ->setSubject($expected)
             ->setKeywords($expected)
-            ->setCategory($expected);
+            ->setCategory($expected)
+            ->setRevision($expected)
+            ->setStatus($expected);
 
         $this->assertZipFileExists('docProps/core.xml');
         $this->assertZipXmlElementExists('docProps/core.xml', '/cp:coreProperties/dc:creator');
@@ -57,6 +52,10 @@ public function testDocumentProperties(): void
         $this->assertZipXmlElementEquals('docProps/core.xml', '/cp:coreProperties/cp:keywords', $expected);
         $this->assertZipXmlElementExists('docProps/core.xml', '/cp:coreProperties/cp:category');
         $this->assertZipXmlElementEquals('docProps/core.xml', '/cp:coreProperties/cp:category', $expected);
+        $this->assertZipXmlElementExists('docProps/core.xml', '/cp:coreProperties/cp:revision');
+        $this->assertZipXmlElementEquals('docProps/core.xml', '/cp:coreProperties/cp:revision', $expected);
+        $this->assertZipXmlElementExists('docProps/core.xml', '/cp:coreProperties/cp:contentStatus');
+        $this->assertZipXmlElementEquals('docProps/core.xml', '/cp:coreProperties/cp:contentStatus', $expected);
         $this->assertIsSchemaECMA376Valid();
     }
 
@@ -73,7 +72,8 @@ public function testMarkAsFinalFalse(): void
     {
         $this->oPresentation->getPresentationProperties()->markAsFinal(false);
 
-        $this->assertZipXmlElementNotExists('docProps/core.xml', '/cp:coreProperties/cp:contentStatus');
+        $this->assertZipXmlElementExists('docProps/core.xml', '/cp:coreProperties/cp:contentStatus');
+        $this->assertZipXmlElementEquals('docProps/core.xml', '/cp:coreProperties/cp:contentStatus', '');
         $this->assertIsSchemaECMA376Valid();
     }
 }
diff --git a/tests/PhpPresentation/Tests/Writer/PowerPoint2007/DocPropsThumbnailTest.php b/tests/PhpPresentation/Tests/Writer/PowerPoint2007/DocPropsThumbnailTest.php
index cd29a9733..ddab8a1cc 100644
--- a/tests/PhpPresentation/Tests/Writer/PowerPoint2007/DocPropsThumbnailTest.php
+++ b/tests/PhpPresentation/Tests/Writer/PowerPoint2007/DocPropsThumbnailTest.php
@@ -19,6 +19,7 @@
 
 namespace PhpPresentation\Tests\Writer\PowerPoint2007;
 
+use PhpOffice\PhpPresentation\PresentationProperties;
 use PhpOffice\PhpPresentation\Tests\PhpPresentationTestCase;
 
 /**
@@ -31,15 +32,40 @@ class DocPropsThumbnailTest extends PhpPresentationTestCase
     public function testRender(): void
     {
         $this->assertZipFileNotExists('docProps/thumbnail.jpeg');
+        $this->assertZipXmlElementNotExists('_rels/.rels', '/Relationships/Relationship[@Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail"]');
         $this->assertIsSchemaECMA376Valid();
     }
 
-    public function testFeatureThumbnail(): void
+    public function testFeatureThumbnailFile(): void
     {
         $imagePath = PHPPRESENTATION_TESTS_BASE_DIR . DIRECTORY_SEPARATOR . 'resources' . DIRECTORY_SEPARATOR . 'images' . DIRECTORY_SEPARATOR . 'PhpPresentationLogo.png';
 
-        $this->oPresentation->getPresentationProperties()->setThumbnailPath($imagePath);
+        $this->oPresentation->getPresentationProperties()
+            ->setThumbnailPath($imagePath, PresentationProperties::THUMBNAIL_FILE);
         $this->assertZipFileExists('docProps/thumbnail.jpeg');
+        $this->assertZipXmlElementExists('_rels/.rels', '/Relationships/Relationship[@Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail"]');
+        $this->assertIsSchemaECMA376Valid();
+    }
+
+    public function testFeatureThumbnailFileNotExisting(): void
+    {
+        $imagePath = PHPPRESENTATION_TESTS_BASE_DIR . DIRECTORY_SEPARATOR . 'resources' . DIRECTORY_SEPARATOR . 'images' . DIRECTORY_SEPARATOR . 'NotExistingFile.png';
+
+        $this->oPresentation->getPresentationProperties()
+            ->setThumbnailPath($imagePath, PresentationProperties::THUMBNAIL_FILE);
+        $this->assertZipFileNotExists('docProps/thumbnail.jpeg');
+        $this->assertZipXmlElementNotExists('_rels/.rels', '/Relationships/Relationship[@Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail"]');
+        $this->assertIsSchemaECMA376Valid();
+    }
+
+    public function testFeatureThumbnailData(): void
+    {
+        $imagePath = PHPPRESENTATION_TESTS_BASE_DIR . DIRECTORY_SEPARATOR . 'resources' . DIRECTORY_SEPARATOR . 'images' . DIRECTORY_SEPARATOR . 'PhpPresentationLogo.png';
+
+        $this->oPresentation->getPresentationProperties()
+            ->setThumbnailPath('', PresentationProperties::THUMBNAIL_DATA, file_get_contents($imagePath));
+        $this->assertZipFileExists('docProps/thumbnail.jpeg');
+        $this->assertZipXmlElementExists('_rels/.rels', '/Relationships/Relationship[@Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail"]');
         $this->assertIsSchemaECMA376Valid();
     }
 }
diff --git a/tests/PhpPresentation/Tests/_includes/PhpPresentationTestCase.php b/tests/PhpPresentation/Tests/_includes/PhpPresentationTestCase.php
index 0fc395d3a..120ffe0c9 100644
--- a/tests/PhpPresentation/Tests/_includes/PhpPresentationTestCase.php
+++ b/tests/PhpPresentation/Tests/_includes/PhpPresentationTestCase.php
@@ -320,6 +320,18 @@ public function assertZipXmlElementEquals($filePath, $xPath, $value): void
         self::assertEquals($nodeList->item(0)->nodeValue, $value);
     }
 
+    /**
+     * @param string $filePath
+     * @param string $xPath
+     * @param mixed $value
+     */
+    public function assertZipXmlElementNotEquals($filePath, $xPath, $value): void
+    {
+        $this->writePresentationFile($this->oPresentation, $this->writerName);
+        $nodeList = $this->getXmlNodeList($filePath, $xPath);
+        self::assertNotEquals($nodeList->item(0)->nodeValue, $value);
+    }
+
     /**
      * @param mixed $value
      */